neon_local: pin pageservers and endpoints

pageserver: skip the blk range check: this is slow (reads relsize page) if queries aren't
hitting latest=true
2026-02-03 02:30:37 +00:00 · 2024-01-03 16:14:58 +00:00 · 2023-12-20 20:06:56 +00:00 · 2023-12-20 20:06:46 +00:00 · 2023-12-20 20:05:06 +00:00 · 2023-12-20 20:03:23 +00:00
101 changed files with 3963 additions and 1460 deletions
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -233,7 +233,7 @@ checksum = "16e62a023e7c117e27523144c5d2459f4397fcc3cab0085af8e2224f643a0193"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
@@ -244,7 +244,7 @@ checksum = "b9ccdd8f2a161be9bd5c023df56f1b2a0bd1d83872ae53b71a84a12c9bf6e842"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
@@ -881,7 +881,7 @@ dependencies = [
 "regex",
 "rustc-hash",
 "shlex",
- "syn 2.0.28",
+ "syn 2.0.32",
 "which",
 ]

@@ -1095,7 +1095,7 @@ dependencies = [
 "heck",
 "proc-macro2",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
@@ -1245,16 +1245,19 @@ name = "control_plane"
 version = "0.1.0"
 dependencies = [
 "anyhow",
+ "async-trait",
 "camino",
 "clap",
 "comfy-table",
 "compute_api",
+ "futures",
 "git-version",
 "hex",
 "hyper",
 "nix 0.26.2",
 "once_cell",
 "pageserver_api",
+ "pageserver_client",
 "postgres",
 "postgres_backend",
 "postgres_connection",
@@ -1268,6 +1271,8 @@ dependencies = [
 "tar",
 "thiserror",
 "tokio",
+ "tokio-postgres",
+ "tokio-util",
 "toml",
 "tracing",
 "url",
@@ -1481,7 +1486,7 @@ dependencies = [
 "proc-macro2",
 "quote",
 "strsim",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
@@ -1492,7 +1497,7 @@ checksum = "29a358ff9f12ec09c3e61fef9b5a9902623a695a46a917b07f269bff1445611a"
 dependencies = [
 "darling_core",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
@@ -1567,7 +1572,7 @@ checksum = "487585f4d0c6655fe74905e2504d8ad6908e4db67f744eb140876906c2f3175d"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
@@ -1661,7 +1666,7 @@ dependencies = [
 "darling",
 "proc-macro2",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
@@ -1915,7 +1920,7 @@ checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
@@ -2101,6 +2106,20 @@ dependencies = [
 "hashbrown 0.13.2",
 ]

+[[package]]
+name = "hdrhistogram"
+version = "7.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "765c9198f173dd59ce26ff9f95ef0aafd0a0fe01fb9d72841bc5066a4c06511d"
+dependencies = [
+ "base64 0.21.1",
+ "byteorder",
+ "crossbeam-channel",
+ "flate2",
+ "nom",
+ "num-traits",
+]
+
 [[package]]
 name = "heapless"
 version = "0.8.0"
@@ -2901,7 +2920,7 @@ checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
@@ -3051,6 +3070,28 @@ dependencies = [
 "sha2",
 ]

+[[package]]
+name = "pagebench"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "clap",
+ "futures",
+ "hdrhistogram",
+ "humantime",
+ "humantime-serde",
+ "pageserver",
+ "pageserver_api",
+ "pageserver_client",
+ "rand 0.8.5",
+ "serde",
+ "serde_json",
+ "tokio",
+ "tracing",
+ "utils",
+ "workspace_hack",
+]
+
 [[package]]
 name = "pagectl"
 version = "0.1.0"
@@ -3140,6 +3181,7 @@ dependencies = [
 "tokio",
 "tokio-io-timeout",
 "tokio-postgres",
+ "tokio-stream",
 "tokio-tar",
 "tokio-util",
 "toml_edit",
@@ -3162,6 +3204,7 @@ dependencies = [
 "enum-map",
 "hex",
 "postgres_ffi",
+ "rand 0.8.5",
 "serde",
 "serde_json",
 "serde_with",
@@ -3172,6 +3215,27 @@ dependencies = [
 "workspace_hack",
 ]

+[[package]]
+name = "pageserver_client"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "async-trait",
+ "bytes",
+ "futures",
+ "pageserver_api",
+ "postgres",
+ "reqwest",
+ "serde",
+ "thiserror",
+ "tokio",
+ "tokio-postgres",
+ "tokio-stream",
+ "tokio-util",
+ "utils",
+ "workspace_hack",
+]
+
 [[package]]
 name = "parking"
 version = "2.1.1"
@@ -3331,7 +3395,7 @@ checksum = "39407670928234ebc5e6e580247dd567ad73a3578460c5990f9503df207e8f07"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
@@ -3538,7 +3602,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3b69d39aab54d069e7f2fe8cb970493e7834601ca2d8c65fd7bbd183578080d1"
 dependencies = [
 "proc-macro2",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
@@ -4146,7 +4210,7 @@ dependencies = [
 "regex",
 "relative-path",
 "rustc_version",
- "syn 2.0.28",
+ "syn 2.0.32",
 "unicode-ident",
 ]

@@ -4292,6 +4356,7 @@ dependencies = [
 "histogram",
 "itertools",
 "pageserver",
+ "pageserver_api",
 "rand 0.8.5",
 "remote_storage",
 "reqwest",
@@ -4580,7 +4645,7 @@ checksum = "aafe972d60b0b9bee71a91b92fee2d4fb3c9d7e8f6b179aa99f27203d99a4816"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
@@ -4661,7 +4726,7 @@ dependencies = [
 "darling",
 "proc-macro2",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
@@ -4928,9 +4993,9 @@ dependencies = [

 [[package]]
 name = "syn"
-version = "2.0.28"
+version = "2.0.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04361975b3f5e348b2189d8dc55bc942f278b2d482a6a0365de5bdd62d351567"
+checksum = "239814284fd6f1a4ffe4ca893952cdd93c224b6a1571c9a9eadd670295c0c9e2"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -5060,7 +5125,7 @@ checksum = "f9456a42c5b0d803c8cd86e73dd7cc9edd429499f37a3550d286d5e86720569f"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
@@ -5178,7 +5243,7 @@ checksum = "5b8a1e28f2deaa14e508979454cb3a223b10b938b45af148bc0986de36f1923b"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
@@ -5479,7 +5544,7 @@ checksum = "0f57e3ca2a01450b1a921183a9c9cbfda207fd822cef4ccb00a65402cbba7a74"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
@@ -5924,7 +5989,7 @@ dependencies = [
 "once_cell",
 "proc-macro2",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 "wasm-bindgen-shared",
 ]

@@ -5958,7 +6023,7 @@ checksum = "e128beba882dd1eb6200e1dc92ae6c5dbaa4311aa7bb211ca035779e5efc39f8"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 "wasm-bindgen-backend",
 "wasm-bindgen-shared",
 ]
@@ -6295,7 +6360,7 @@ dependencies = [
 "smallvec",
 "subtle",
 "syn 1.0.109",
- "syn 2.0.28",
+ "syn 2.0.32",
 "time",
 "time-macros",
 "tokio",
@@ -6357,22 +6422,22 @@ dependencies = [

 [[package]]
 name = "zerocopy"
-version = "0.7.3"
+version = "0.7.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a7af71d8643341260a65f89fa60c0eeaa907f34544d8f6d9b0df72f069b5e74"
+checksum = "1c4061bedbb353041c12f413700357bec76df2c7e2ca8e4df8bac24c6bf68e3d"
 dependencies = [
 "zerocopy-derive",
 ]

 [[package]]
 name = "zerocopy-derive"
-version = "0.7.3"
+version = "0.7.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9731702e2f0617ad526794ae28fbc6f6ca8849b5ba729666c2a5bc4b6ddee2cd"
+checksum = "b3c129550b3e6de3fd0ba67ba5c81818f9805e58b8d7fee80a3a59d2c9fc601a"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.28",
+ "syn 2.0.32",
 ]

 [[package]]
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,6 +5,8 @@ members = [
    "control_plane",
    "pageserver",
    "pageserver/ctl",
+    "pageserver/client",
+    "pageserver/pagebench",
    "proxy",
    "safekeeper",
    "storage_broker",
@@ -78,6 +80,7 @@ futures-util = "0.3"
 git-version = "0.3"
 hashbrown = "0.13"
 hashlink = "0.8.1"
+hdrhistogram = "7.5.2"
 hex = "0.4"
 hex-literal = "0.4"
 hmac = "0.12.1"
@@ -182,6 +185,7 @@ compute_api = { version = "0.1", path = "./libs/compute_api/" }
 consumption_metrics = { version = "0.1", path = "./libs/consumption_metrics/" }
 metrics = { version = "0.1", path = "./libs/metrics/" }
 pageserver_api = { version = "0.1", path = "./libs/pageserver_api/" }
+pageserver_client = { path = "./pageserver/client" }
 postgres_backend = { version = "0.1", path = "./libs/postgres_backend/" }
 postgres_connection = { version = "0.1", path = "./libs/postgres_connection/" }
 postgres_ffi = { version = "0.1", path = "./libs/postgres_ffi/" }
--- a/README.md
+++ b/README.md
@@ -29,13 +29,14 @@ See developer documentation in [SUMMARY.md](/docs/SUMMARY.md) for more informati
 ```bash
 apt install build-essential libtool libreadline-dev zlib1g-dev flex bison libseccomp-dev \
 libssl-dev clang pkg-config libpq-dev cmake postgresql-client protobuf-compiler \
-libcurl4-openssl-dev openssl python-poetry lsof libicu-dev
+libcurl4-openssl-dev openssl python3-poetry lsof libicu-dev
 ```
 * On Fedora, these packages are needed:
 ```bash
 dnf install flex bison readline-devel zlib-devel openssl-devel \
  libseccomp-devel perl clang cmake postgresql postgresql-contrib protobuf-compiler \
-  protobuf-devel libcurl-devel openssl poetry lsof libicu-devel
+  protobuf-devel libcurl-devel openssl poetry lsof libicu-devel libpq-devel python3-devel \
+  libffi-devel
 ```
 * On Arch based systems, these packages are needed:
 ```bash
--- a/control_plane/Cargo.toml
+++ b/control_plane/Cargo.toml
@@ -6,9 +6,11 @@ license.workspace = true

 [dependencies]
 anyhow.workspace = true
+async-trait.workspace = true
 camino.workspace = true
 clap.workspace = true
 comfy-table.workspace = true
+futures.workspace = true
 git-version.workspace = true
 nix.workspace = true
 once_cell.workspace = true
@@ -24,10 +26,11 @@ tar.workspace = true
 thiserror.workspace = true
 toml.workspace = true
 tokio.workspace = true
+tokio-postgres.workspace = true
+tokio-util.workspace = true
 url.workspace = true
-# Note: Do not directly depend on pageserver or safekeeper; use pageserver_api or safekeeper_api
-# instead, so that recompile times are better.
 pageserver_api.workspace = true
+pageserver_client.workspace = true
 postgres_backend.workspace = true
 safekeeper_api.workspace = true
 postgres_connection.workspace = true
--- a/control_plane/src/attachment_service.rs
+++ b/control_plane/src/attachment_service.rs
@@ -9,7 +9,7 @@ pub struct AttachmentService {
    env: LocalEnv,
    listen: String,
    path: PathBuf,
-    client: reqwest::blocking::Client,
+    client: reqwest::Client,
 }

 const COMMAND: &str = "attachment_service";
@@ -53,7 +53,7 @@ impl AttachmentService {
            env: env.clone(),
            path,
            listen,
-            client: reqwest::blocking::ClientBuilder::new()
+            client: reqwest::ClientBuilder::new()
                .build()
                .expect("Failed to construct http client"),
        }
@@ -64,7 +64,7 @@ impl AttachmentService {
            .expect("non-Unicode path")
    }

-    pub fn start(&self) -> anyhow::Result<Child> {
+    pub async fn start(&self) -> anyhow::Result<Child> {
        let path_str = self.path.to_string_lossy();

        background_process::start_process(
@@ -73,10 +73,11 @@ impl AttachmentService {
            &self.env.attachment_service_bin(),
            ["-l", &self.listen, "-p", &path_str],
            [],
-            background_process::InitialPidFile::Create(&self.pid_file()),
+            background_process::InitialPidFile::Create(self.pid_file()),
            // TODO: a real status check
-            || Ok(true),
+            || async move { anyhow::Ok(true) },
        )
+        .await
    }

    pub fn stop(&self, immediate: bool) -> anyhow::Result<()> {
@@ -84,7 +85,7 @@ impl AttachmentService {
    }

    /// Call into the attach_hook API, for use before handing out attachments to pageservers
-    pub fn attach_hook(
+    pub async fn attach_hook(
        &self,
        tenant_id: TenantId,
        pageserver_id: NodeId,
@@ -104,16 +105,16 @@ impl AttachmentService {
            node_id: Some(pageserver_id),
        };

-        let response = self.client.post(url).json(&request).send()?;
+        let response = self.client.post(url).json(&request).send().await?;
        if response.status() != StatusCode::OK {
            return Err(anyhow!("Unexpected status {}", response.status()));
        }

-        let response = response.json::<AttachHookResponse>()?;
+        let response = response.json::<AttachHookResponse>().await?;
        Ok(response.gen)
    }

-    pub fn inspect(&self, tenant_id: TenantId) -> anyhow::Result<Option<(u32, NodeId)>> {
+    pub async fn inspect(&self, tenant_id: TenantId) -> anyhow::Result<Option<(u32, NodeId)>> {
        use hyper::StatusCode;

        let url = self
@@ -126,12 +127,12 @@ impl AttachmentService {

        let request = InspectRequest { tenant_id };

-        let response = self.client.post(url).json(&request).send()?;
+        let response = self.client.post(url).json(&request).send().await?;
        if response.status() != StatusCode::OK {
            return Err(anyhow!("Unexpected status {}", response.status()));
        }

-        let response = response.json::<InspectResponse>()?;
+        let response = response.json::<InspectResponse>().await?;
        Ok(response.attachment)
    }
 }
--- a/control_plane/src/background_process.rs
+++ b/control_plane/src/background_process.rs
@@ -44,15 +44,15 @@ const NOTICE_AFTER_RETRIES: u64 = 50;

 /// Argument to `start_process`, to indicate whether it should create pidfile or if the process creates
 /// it itself.
-pub enum InitialPidFile<'t> {
+pub enum InitialPidFile {
    /// Create a pidfile, to allow future CLI invocations to manipulate the process.
-    Create(&'t Utf8Path),
+    Create(Utf8PathBuf),
    /// The process will create the pidfile itself, need to wait for that event.
-    Expect(&'t Utf8Path),
+    Expect(Utf8PathBuf),
 }

 /// Start a background child process using the parameters given.
-pub fn start_process<F, AI, A, EI>(
+pub async fn start_process<F, Fut, AI, A, EI>(
    process_name: &str,
    datadir: &Path,
    command: &Path,
@@ -62,7 +62,8 @@ pub fn start_process<F, AI, A, EI>(
    process_status_check: F,
 ) -> anyhow::Result<Child>
 where
-    F: Fn() -> anyhow::Result<bool>,
+    F: Fn() -> Fut,
+    Fut: std::future::Future<Output = anyhow::Result<bool>>,
    AI: IntoIterator<Item = A>,
    A: AsRef<OsStr>,
    // Not generic AsRef<OsStr>, otherwise empty `envs` prevents type inference
@@ -89,7 +90,7 @@ where
    let filled_cmd = fill_remote_storage_secrets_vars(fill_rust_env_vars(background_command));
    filled_cmd.envs(envs);

-    let pid_file_to_check = match initial_pid_file {
+    let pid_file_to_check = match &initial_pid_file {
        InitialPidFile::Create(path) => {
            pre_exec_create_pidfile(filled_cmd, path);
            path
@@ -107,7 +108,7 @@ where
    );

    for retries in 0..RETRIES {
-        match process_started(pid, Some(pid_file_to_check), &process_status_check) {
+        match process_started(pid, pid_file_to_check, &process_status_check).await {
            Ok(true) => {
                println!("\n{process_name} started, pid: {pid}");
                return Ok(spawned_process);
@@ -316,22 +317,20 @@ where
    cmd
 }

-fn process_started<F>(
+async fn process_started<F, Fut>(
    pid: Pid,
-    pid_file_to_check: Option<&Utf8Path>,
+    pid_file_to_check: &Utf8Path,
    status_check: &F,
 ) -> anyhow::Result<bool>
 where
-    F: Fn() -> anyhow::Result<bool>,
+    F: Fn() -> Fut,
+    Fut: std::future::Future<Output = anyhow::Result<bool>>,
 {
-    match status_check() {
-        Ok(true) => match pid_file_to_check {
-            Some(pid_file_path) => match pid_file::read(pid_file_path)? {
-                PidFileRead::NotExist => Ok(false),
-                PidFileRead::LockedByOtherProcess(pid_in_file) => Ok(pid_in_file == pid),
-                PidFileRead::NotHeldByAnyProcess(_) => Ok(false),
-            },
-            None => Ok(true),
+    match status_check().await {
+        Ok(true) => match pid_file::read(pid_file_to_check)? {
+            PidFileRead::NotExist => Ok(false),
+            PidFileRead::LockedByOtherProcess(pid_in_file) => Ok(pid_in_file == pid),
+            PidFileRead::NotHeldByAnyProcess(_) => Ok(false),
        },
        Ok(false) => Ok(false),
        Err(e) => anyhow::bail!("process failed to start: {e}"),
--- a/control_plane/src/bin/neon_local.rs
+++ b/control_plane/src/bin/neon_local.rs
@@ -120,15 +120,20 @@ fn main() -> Result<()> {
        let mut env = LocalEnv::load_config().context("Error loading config")?;
        let original_env = env.clone();

+        let rt = tokio::runtime::Builder::new_current_thread()
+            .enable_all()
+            .build()
+            .unwrap();
+
        let subcommand_result = match sub_name {
-            "tenant" => handle_tenant(sub_args, &mut env),
-            "timeline" => handle_timeline(sub_args, &mut env),
-            "start" => handle_start_all(sub_args, &env),
+            "tenant" => rt.block_on(handle_tenant(sub_args, &mut env)),
+            "timeline" => rt.block_on(handle_timeline(sub_args, &mut env)),
+            "start" => rt.block_on(handle_start_all(sub_args, &env)),
            "stop" => handle_stop_all(sub_args, &env),
-            "pageserver" => handle_pageserver(sub_args, &env),
-            "attachment_service" => handle_attachment_service(sub_args, &env),
-            "safekeeper" => handle_safekeeper(sub_args, &env),
-            "endpoint" => handle_endpoint(sub_args, &env),
+            "pageserver" => rt.block_on(handle_pageserver(sub_args, &env)),
+            "attachment_service" => rt.block_on(handle_attachment_service(sub_args, &env)),
+            "safekeeper" => rt.block_on(handle_safekeeper(sub_args, &env)),
+            "endpoint" => rt.block_on(handle_endpoint(sub_args, &env)),
            "mappings" => handle_mappings(sub_args, &mut env),
            "pg" => bail!("'pg' subcommand has been renamed to 'endpoint'"),
            _ => bail!("unexpected subcommand {sub_name}"),
@@ -269,12 +274,13 @@ fn print_timeline(

 /// Returns a map of timeline IDs to timeline_id@lsn strings.
 /// Connects to the pageserver to query this information.
-fn get_timeline_infos(
+async fn get_timeline_infos(
    env: &local_env::LocalEnv,
    tenant_id: &TenantId,
 ) -> Result<HashMap<TimelineId, TimelineInfo>> {
    Ok(get_default_pageserver(env)
-        .timeline_list(tenant_id)?
+        .timeline_list(tenant_id)
+        .await?
        .into_iter()
        .map(|timeline_info| (timeline_info.timeline_id, timeline_info))
        .collect())
@@ -373,11 +379,14 @@ fn pageserver_config_overrides(init_match: &ArgMatches) -> Vec<&str> {
        .collect()
 }

-fn handle_tenant(tenant_match: &ArgMatches, env: &mut local_env::LocalEnv) -> anyhow::Result<()> {
+async fn handle_tenant(
+    tenant_match: &ArgMatches,
+    env: &mut local_env::LocalEnv,
+) -> anyhow::Result<()> {
    let pageserver = get_default_pageserver(env);
    match tenant_match.subcommand() {
        Some(("list", _)) => {
-            for t in pageserver.tenant_list()? {
+            for t in pageserver.tenant_list().await? {
                println!("{} {:?}", t.id, t.state);
            }
        }
@@ -394,12 +403,16 @@ fn handle_tenant(tenant_match: &ArgMatches, env: &mut local_env::LocalEnv) -> an
                // We must register the tenant with the attachment service, so
                // that when the pageserver restarts, it will be re-attached.
                let attachment_service = AttachmentService::from_env(env);
-                attachment_service.attach_hook(tenant_id, pageserver.conf.id)?
+                attachment_service
+                    .attach_hook(tenant_id, pageserver.conf.id)
+                    .await?
            } else {
                None
            };

-            pageserver.tenant_create(tenant_id, generation, tenant_conf)?;
+            pageserver
+                .tenant_create(tenant_id, generation, tenant_conf)
+                .await?;
            println!("tenant {tenant_id} successfully created on the pageserver");

            // Create an initial timeline for the new tenant
@@ -409,14 +422,16 @@ fn handle_tenant(tenant_match: &ArgMatches, env: &mut local_env::LocalEnv) -> an
                .copied()
                .context("Failed to parse postgres version from the argument string")?;

-            let timeline_info = pageserver.timeline_create(
-                tenant_id,
-                new_timeline_id,
-                None,
-                None,
-                Some(pg_version),
-                None,
-            )?;
+            let timeline_info = pageserver
+                .timeline_create(
+                    tenant_id,
+                    new_timeline_id,
+                    None,
+                    None,
+                    Some(pg_version),
+                    None,
+                )
+                .await?;
            let new_timeline_id = timeline_info.timeline_id;
            let last_record_lsn = timeline_info.last_record_lsn;

@@ -450,6 +465,7 @@ fn handle_tenant(tenant_match: &ArgMatches, env: &mut local_env::LocalEnv) -> an

            pageserver
                .tenant_config(tenant_id, tenant_conf)
+                .await
                .with_context(|| format!("Tenant config failed for tenant with id {tenant_id}"))?;
            println!("tenant {tenant_id} successfully configured on the pageserver");
        }
@@ -458,7 +474,7 @@ fn handle_tenant(tenant_match: &ArgMatches, env: &mut local_env::LocalEnv) -> an
            let new_pageserver = get_pageserver(env, matches)?;
            let new_pageserver_id = new_pageserver.conf.id;

-            migrate_tenant(env, tenant_id, new_pageserver)?;
+            migrate_tenant(env, tenant_id, new_pageserver).await?;
            println!("tenant {tenant_id} migrated to {}", new_pageserver_id);
        }

@@ -468,13 +484,13 @@ fn handle_tenant(tenant_match: &ArgMatches, env: &mut local_env::LocalEnv) -> an
    Ok(())
 }

-fn handle_timeline(timeline_match: &ArgMatches, env: &mut local_env::LocalEnv) -> Result<()> {
+async fn handle_timeline(timeline_match: &ArgMatches, env: &mut local_env::LocalEnv) -> Result<()> {
    let pageserver = get_default_pageserver(env);

    match timeline_match.subcommand() {
        Some(("list", list_match)) => {
            let tenant_id = get_tenant_id(list_match, env)?;
-            let timelines = pageserver.timeline_list(&tenant_id)?;
+            let timelines = pageserver.timeline_list(&tenant_id).await?;
            print_timelines_tree(timelines, env.timeline_name_mappings())?;
        }
        Some(("create", create_match)) => {
@@ -490,14 +506,16 @@ fn handle_timeline(timeline_match: &ArgMatches, env: &mut local_env::LocalEnv) -

            let new_timeline_id_opt = parse_timeline_id(create_match)?;

-            let timeline_info = pageserver.timeline_create(
-                tenant_id,
-                new_timeline_id_opt,
-                None,
-                None,
-                Some(pg_version),
-                None,
-            )?;
+            let timeline_info = pageserver
+                .timeline_create(
+                    tenant_id,
+                    new_timeline_id_opt,
+                    None,
+                    None,
+                    Some(pg_version),
+                    None,
+                )
+                .await?;
            let new_timeline_id = timeline_info.timeline_id;

            let last_record_lsn = timeline_info.last_record_lsn;
@@ -542,7 +560,9 @@ fn handle_timeline(timeline_match: &ArgMatches, env: &mut local_env::LocalEnv) -

            let mut cplane = ComputeControlPlane::load(env.clone())?;
            println!("Importing timeline into pageserver ...");
-            pageserver.timeline_import(tenant_id, timeline_id, base, pg_wal, pg_version)?;
+            pageserver
+                .timeline_import(tenant_id, timeline_id, base, pg_wal, pg_version)
+                .await?;
            env.register_branch_mapping(name.to_string(), tenant_id, timeline_id)?;

            println!("Creating endpoint for imported timeline ...");
@@ -578,14 +598,16 @@ fn handle_timeline(timeline_match: &ArgMatches, env: &mut local_env::LocalEnv) -
                .map(|lsn_str| Lsn::from_str(lsn_str))
                .transpose()
                .context("Failed to parse ancestor start Lsn from the request")?;
-            let timeline_info = pageserver.timeline_create(
-                tenant_id,
-                None,
-                start_lsn,
-                Some(ancestor_timeline_id),
-                None,
-                None,
-            )?;
+            let timeline_info = pageserver
+                .timeline_create(
+                    tenant_id,
+                    None,
+                    start_lsn,
+                    Some(ancestor_timeline_id),
+                    None,
+                    None,
+                )
+                .await?;
            let new_timeline_id = timeline_info.timeline_id;

            let last_record_lsn = timeline_info.last_record_lsn;
@@ -604,7 +626,7 @@ fn handle_timeline(timeline_match: &ArgMatches, env: &mut local_env::LocalEnv) -
    Ok(())
 }

-fn handle_endpoint(ep_match: &ArgMatches, env: &local_env::LocalEnv) -> Result<()> {
+async fn handle_endpoint(ep_match: &ArgMatches, env: &local_env::LocalEnv) -> Result<()> {
    let (sub_name, sub_args) = match ep_match.subcommand() {
        Some(ep_subcommand_data) => ep_subcommand_data,
        None => bail!("no endpoint subcommand provided"),
@@ -614,10 +636,12 @@ fn handle_endpoint(ep_match: &ArgMatches, env: &local_env::LocalEnv) -> Result<(
    match sub_name {
        "list" => {
            let tenant_id = get_tenant_id(sub_args, env)?;
-            let timeline_infos = get_timeline_infos(env, &tenant_id).unwrap_or_else(|e| {
-                eprintln!("Failed to load timeline info: {}", e);
-                HashMap::new()
-            });
+            let timeline_infos = get_timeline_infos(env, &tenant_id)
+                .await
+                .unwrap_or_else(|e| {
+                    eprintln!("Failed to load timeline info: {}", e);
+                    HashMap::new()
+                });

            let timeline_name_mappings = env.timeline_name_mappings();

@@ -791,7 +815,9 @@ fn handle_endpoint(ep_match: &ArgMatches, env: &local_env::LocalEnv) -> Result<(
            };

            println!("Starting existing endpoint {endpoint_id}...");
-            endpoint.start(&auth_token, safekeepers, remote_ext_config)?;
+            endpoint
+                .start(&auth_token, safekeepers, remote_ext_config)
+                .await?;
        }
        "reconfigure" => {
            let endpoint_id = sub_args
@@ -809,7 +835,7 @@ fn handle_endpoint(ep_match: &ArgMatches, env: &local_env::LocalEnv) -> Result<(
                } else {
                    None
                };
-            endpoint.reconfigure(pageserver_id)?;
+            endpoint.reconfigure(pageserver_id).await?;
        }
        "stop" => {
            let endpoint_id = sub_args
@@ -875,11 +901,12 @@ fn get_pageserver(env: &local_env::LocalEnv, args: &ArgMatches) -> Result<PageSe
    ))
 }

-fn handle_pageserver(sub_match: &ArgMatches, env: &local_env::LocalEnv) -> Result<()> {
+async fn handle_pageserver(sub_match: &ArgMatches, env: &local_env::LocalEnv) -> Result<()> {
    match sub_match.subcommand() {
        Some(("start", subcommand_args)) => {
            if let Err(e) = get_pageserver(env, subcommand_args)?
                .start(&pageserver_config_overrides(subcommand_args))
+                .await
            {
                eprintln!("pageserver start failed: {e}");
                exit(1);
@@ -906,7 +933,10 @@ fn handle_pageserver(sub_match: &ArgMatches, env: &local_env::LocalEnv) -> Resul
                exit(1);
            }

-            if let Err(e) = pageserver.start(&pageserver_config_overrides(subcommand_args)) {
+            if let Err(e) = pageserver
+                .start(&pageserver_config_overrides(subcommand_args))
+                .await
+            {
                eprintln!("pageserver start failed: {e}");
                exit(1);
            }
@@ -920,14 +950,17 @@ fn handle_pageserver(sub_match: &ArgMatches, env: &local_env::LocalEnv) -> Resul
                exit(1);
            }

-            if let Err(e) = pageserver.start(&pageserver_config_overrides(subcommand_args)) {
+            if let Err(e) = pageserver
+                .start(&pageserver_config_overrides(subcommand_args))
+                .await
+            {
                eprintln!("pageserver start failed: {e}");
                exit(1);
            }
        }

        Some(("status", subcommand_args)) => {
-            match get_pageserver(env, subcommand_args)?.check_status() {
+            match get_pageserver(env, subcommand_args)?.check_status().await {
                Ok(_) => println!("Page server is up and running"),
                Err(err) => {
                    eprintln!("Page server is not available: {}", err);
@@ -942,11 +975,14 @@ fn handle_pageserver(sub_match: &ArgMatches, env: &local_env::LocalEnv) -> Resul
    Ok(())
 }

-fn handle_attachment_service(sub_match: &ArgMatches, env: &local_env::LocalEnv) -> Result<()> {
+async fn handle_attachment_service(
+    sub_match: &ArgMatches,
+    env: &local_env::LocalEnv,
+) -> Result<()> {
    let svc = AttachmentService::from_env(env);
    match sub_match.subcommand() {
        Some(("start", _start_match)) => {
-            if let Err(e) = svc.start() {
+            if let Err(e) = svc.start().await {
                eprintln!("start failed: {e}");
                exit(1);
            }
@@ -987,7 +1023,7 @@ fn safekeeper_extra_opts(init_match: &ArgMatches) -> Vec<String> {
        .collect()
 }

-fn handle_safekeeper(sub_match: &ArgMatches, env: &local_env::LocalEnv) -> Result<()> {
+async fn handle_safekeeper(sub_match: &ArgMatches, env: &local_env::LocalEnv) -> Result<()> {
    let (sub_name, sub_args) = match sub_match.subcommand() {
        Some(safekeeper_command_data) => safekeeper_command_data,
        None => bail!("no safekeeper subcommand provided"),
@@ -1005,7 +1041,7 @@ fn handle_safekeeper(sub_match: &ArgMatches, env: &local_env::LocalEnv) -> Resul
        "start" => {
            let extra_opts = safekeeper_extra_opts(sub_args);

-            if let Err(e) = safekeeper.start(extra_opts) {
+            if let Err(e) = safekeeper.start(extra_opts).await {
                eprintln!("safekeeper start failed: {}", e);
                exit(1);
            }
@@ -1031,7 +1067,7 @@ fn handle_safekeeper(sub_match: &ArgMatches, env: &local_env::LocalEnv) -> Resul
            }

            let extra_opts = safekeeper_extra_opts(sub_args);
-            if let Err(e) = safekeeper.start(extra_opts) {
+            if let Err(e) = safekeeper.start(extra_opts).await {
                eprintln!("safekeeper start failed: {}", e);
                exit(1);
            }
@@ -1044,15 +1080,15 @@ fn handle_safekeeper(sub_match: &ArgMatches, env: &local_env::LocalEnv) -> Resul
    Ok(())
 }

-fn handle_start_all(sub_match: &ArgMatches, env: &local_env::LocalEnv) -> anyhow::Result<()> {
+async fn handle_start_all(sub_match: &ArgMatches, env: &local_env::LocalEnv) -> anyhow::Result<()> {
    // Endpoints are not started automatically

-    broker::start_broker_process(env)?;
+    broker::start_broker_process(env).await?;

    // Only start the attachment service if the pageserver is configured to need it
    if env.control_plane_api.is_some() {
        let attachment_service = AttachmentService::from_env(env);
-        if let Err(e) = attachment_service.start() {
+        if let Err(e) = attachment_service.start().await {
            eprintln!("attachment_service start failed: {:#}", e);
            try_stop_all(env, true);
            exit(1);
@@ -1061,7 +1097,10 @@ fn handle_start_all(sub_match: &ArgMatches, env: &local_env::LocalEnv) -> anyhow

    for ps_conf in &env.pageservers {
        let pageserver = PageServerNode::from_env(env, ps_conf);
-        if let Err(e) = pageserver.start(&pageserver_config_overrides(sub_match)) {
+        if let Err(e) = pageserver
+            .start(&pageserver_config_overrides(sub_match))
+            .await
+        {
            eprintln!("pageserver {} start failed: {:#}", ps_conf.id, e);
            try_stop_all(env, true);
            exit(1);
@@ -1070,7 +1109,7 @@ fn handle_start_all(sub_match: &ArgMatches, env: &local_env::LocalEnv) -> anyhow

    for node in env.safekeepers.iter() {
        let safekeeper = SafekeeperNode::from_env(env, node);
-        if let Err(e) = safekeeper.start(vec![]) {
+        if let Err(e) = safekeeper.start(vec![]).await {
            eprintln!("safekeeper {} start failed: {:#}", safekeeper.id, e);
            try_stop_all(env, false);
            exit(1);
--- a/control_plane/src/broker.rs
+++ b/control_plane/src/broker.rs
@@ -11,7 +11,7 @@ use camino::Utf8PathBuf;

 use crate::{background_process, local_env};

-pub fn start_broker_process(env: &local_env::LocalEnv) -> anyhow::Result<()> {
+pub async fn start_broker_process(env: &local_env::LocalEnv) -> anyhow::Result<()> {
    let broker = &env.broker;
    let listen_addr = &broker.listen_addr;

@@ -19,15 +19,15 @@ pub fn start_broker_process(env: &local_env::LocalEnv) -> anyhow::Result<()> {

    let args = [format!("--listen-addr={listen_addr}")];

-    let client = reqwest::blocking::Client::new();
+    let client = reqwest::Client::new();
    background_process::start_process(
        "storage_broker",
        &env.base_data_dir,
        &env.storage_broker_bin(),
        args,
        [],
-        background_process::InitialPidFile::Create(&storage_broker_pid_file_path(env)),
-        || {
+        background_process::InitialPidFile::Create(storage_broker_pid_file_path(env)),
+        || async {
            let url = broker.client_url();
            let status_url = url.join("status").with_context(|| {
                format!("Failed to append /status path to broker endpoint {url}")
@@ -36,12 +36,13 @@ pub fn start_broker_process(env: &local_env::LocalEnv) -> anyhow::Result<()> {
                .get(status_url)
                .build()
                .with_context(|| format!("Failed to construct request to broker endpoint {url}"))?;
-            match client.execute(request) {
+            match client.execute(request).await {
                Ok(resp) => Ok(resp.status().is_success()),
                Err(_) => Ok(false),
            }
        },
    )
+    .await
    .context("Failed to spawn storage_broker subprocess")?;
    Ok(())
 }
--- a/control_plane/src/endpoint.rs
+++ b/control_plane/src/endpoint.rs
@@ -464,7 +464,7 @@ impl Endpoint {
        }
    }

-    pub fn start(
+    pub async fn start(
        &self,
        auth_token: &Option<String>,
        safekeepers: Vec<NodeId>,
@@ -549,8 +549,10 @@ impl Endpoint {

        // Launch compute_ctl
        println!("Starting postgres node at '{}'", self.connstr());
-        let mut cmd = Command::new(self.env.neon_distrib_dir.join("compute_ctl"));
-        cmd.args(["--http-port", &self.http_address.port().to_string()])
+        let mut cmd = Command::new("/usr/bin/taskset");
+        cmd.args(["-c".to_string(), "8-11".to_string()])
+            .args([self.env.neon_distrib_dir.join("compute_ctl")])
+            .args(["--http-port", &self.http_address.port().to_string()])
            .args(["--pgdata", self.pgdata().to_str().unwrap()])
            .args(["--connstr", &self.connstr()])
            .args([
@@ -587,7 +589,7 @@ impl Endpoint {
        const MAX_ATTEMPTS: u32 = 10 * 30; // Wait up to 30 s
        loop {
            attempt += 1;
-            match self.get_status() {
+            match self.get_status().await {
                Ok(state) => {
                    match state.status {
                        ComputeStatus::Init => {
@@ -629,8 +631,8 @@ impl Endpoint {
    }

    // Call the /status HTTP API
-    pub fn get_status(&self) -> Result<ComputeState> {
-        let client = reqwest::blocking::Client::new();
+    pub async fn get_status(&self) -> Result<ComputeState> {
+        let client = reqwest::Client::new();

        let response = client
            .request(
@@ -641,16 +643,17 @@ impl Endpoint {
                    self.http_address.port()
                ),
            )
-            .send()?;
+            .send()
+            .await?;

        // Interpret the response
        let status = response.status();
        if !(status.is_client_error() || status.is_server_error()) {
-            Ok(response.json()?)
+            Ok(response.json().await?)
        } else {
            // reqwest does not export its error construction utility functions, so let's craft the message ourselves
            let url = response.url().to_owned();
-            let msg = match response.text() {
+            let msg = match response.text().await {
                Ok(err_body) => format!("Error: {}", err_body),
                Err(_) => format!("Http error ({}) at {}.", status.as_u16(), url),
            };
@@ -658,7 +661,7 @@ impl Endpoint {
        }
    }

-    pub fn reconfigure(&self, pageserver_id: Option<NodeId>) -> Result<()> {
+    pub async fn reconfigure(&self, pageserver_id: Option<NodeId>) -> Result<()> {
        let mut spec: ComputeSpec = {
            let spec_path = self.endpoint_path().join("spec.json");
            let file = std::fs::File::open(spec_path)?;
@@ -687,7 +690,7 @@ impl Endpoint {
            spec.pageserver_connstring = Some(format!("postgresql://no_user@{host}:{port}"));
        }

-        let client = reqwest::blocking::Client::new();
+        let client = reqwest::Client::new();
        let response = client
            .post(format!(
                "http://{}:{}/configure",
@@ -698,14 +701,15 @@ impl Endpoint {
                "{{\"spec\":{}}}",
                serde_json::to_string_pretty(&spec)?
            ))
-            .send()?;
+            .send()
+            .await?;

        let status = response.status();
        if !(status.is_client_error() || status.is_server_error()) {
            Ok(())
        } else {
            let url = response.url().to_owned();
-            let msg = match response.text() {
+            let msg = match response.text().await {
                Ok(err_body) => format!("Error: {}", err_body),
                Err(_) => format!("Http error ({}) at {}.", status.as_u16(), url),
            };
--- a/control_plane/src/pageserver.rs
+++ b/control_plane/src/pageserver.rs
@@ -6,28 +6,25 @@
 //!
 use std::borrow::Cow;
 use std::collections::HashMap;
-use std::fs::File;
-use std::io::{BufReader, Write};
+
+use std::io;
+use std::io::Write;
 use std::num::NonZeroU64;
 use std::path::PathBuf;
 use std::process::{Child, Command};
+use std::str::FromStr;
 use std::time::Duration;
-use std::{io, result};

 use anyhow::{bail, Context};
 use camino::Utf8PathBuf;
-use pageserver_api::models::{
-    self, LocationConfig, TenantInfo, TenantLocationConfigRequest, TimelineInfo,
-};
+use futures::SinkExt;
+use pageserver_api::models::{self, LocationConfig, TenantInfo, TimelineInfo};
 use pageserver_api::shard::TenantShardId;
+use pageserver_client::mgmt_api;
 use postgres_backend::AuthType;
 use postgres_connection::{parse_host_port, PgConnectionConfig};
-use reqwest::blocking::{Client, RequestBuilder, Response};
-use reqwest::{IntoUrl, Method};
-use thiserror::Error;
 use utils::auth::{Claims, Scope};
 use utils::{
-    http::error::HttpErrorBody,
    id::{TenantId, TimelineId},
    lsn::Lsn,
 };
@@ -38,45 +35,6 @@ use crate::{background_process, local_env::LocalEnv};
 /// Directory within .neon which will be used by default for LocalFs remote storage.
 pub const PAGESERVER_REMOTE_STORAGE_DIR: &str = "local_fs_remote_storage/pageserver";

-#[derive(Error, Debug)]
-pub enum PageserverHttpError {
-    #[error("Reqwest error: {0}")]
-    Transport(#[from] reqwest::Error),
-
-    #[error("Error: {0}")]
-    Response(String),
-}
-
-impl From<anyhow::Error> for PageserverHttpError {
-    fn from(e: anyhow::Error) -> Self {
-        Self::Response(e.to_string())
-    }
-}
-
-type Result<T> = result::Result<T, PageserverHttpError>;
-
-pub trait ResponseErrorMessageExt: Sized {
-    fn error_from_body(self) -> Result<Self>;
-}
-
-impl ResponseErrorMessageExt for Response {
-    fn error_from_body(self) -> Result<Self> {
-        let status = self.status();
-        if !(status.is_client_error() || status.is_server_error()) {
-            return Ok(self);
-        }
-
-        // reqwest does not export its error construction utility functions, so let's craft the message ourselves
-        let url = self.url().to_owned();
-        Err(PageserverHttpError::Response(
-            match self.json::<HttpErrorBody>() {
-                Ok(err_body) => format!("Error: {}", err_body.msg),
-                Err(_) => format!("Http error ({}) at {}.", status.as_u16(), url),
-            },
-        ))
-    }
-}
-
 //
 // Control routines for pageserver.
 //
@@ -87,8 +45,7 @@ pub struct PageServerNode {
    pub pg_connection_config: PgConnectionConfig,
    pub conf: PageServerConf,
    pub env: LocalEnv,
-    pub http_client: Client,
-    pub http_base_url: String,
+    pub http_client: mgmt_api::Client,
 }

 impl PageServerNode {
@@ -100,8 +57,19 @@ impl PageServerNode {
            pg_connection_config: PgConnectionConfig::new_host_port(host, port),
            conf: conf.clone(),
            env: env.clone(),
-            http_client: Client::new(),
-            http_base_url: format!("http://{}/v1", conf.listen_http_addr),
+            http_client: mgmt_api::Client::new(
+                format!("http://{}", conf.listen_http_addr),
+                {
+                    match conf.http_auth_type {
+                        AuthType::Trust => None,
+                        AuthType::NeonJWT => Some(
+                            env.generate_auth_token(&Claims::new(None, Scope::PageServerApi))
+                                .unwrap(),
+                        ),
+                    }
+                }
+                .as_deref(),
+            ),
        }
    }

@@ -182,8 +150,8 @@ impl PageServerNode {
            .expect("non-Unicode path")
    }

-    pub fn start(&self, config_overrides: &[&str]) -> anyhow::Result<Child> {
-        self.start_node(config_overrides, false)
+    pub async fn start(&self, config_overrides: &[&str]) -> anyhow::Result<Child> {
+        self.start_node(config_overrides, false).await
    }

    fn pageserver_init(&self, config_overrides: &[&str]) -> anyhow::Result<()> {
@@ -224,7 +192,12 @@ impl PageServerNode {
        Ok(())
    }

-    fn start_node(&self, config_overrides: &[&str], update_config: bool) -> anyhow::Result<Child> {
+    async fn start_node(
+        &self,
+        config_overrides: &[&str],
+        update_config: bool,
+    ) -> anyhow::Result<Child> {
+        // TODO: using a thread here because start_process() is not async but we need to call check_status()
        let datadir = self.repo_path();
        print!(
            "Starting pageserver node {} at '{}' in {:?}",
@@ -232,7 +205,7 @@ impl PageServerNode {
            self.pg_connection_config.raw_address(),
            datadir
        );
-        io::stdout().flush()?;
+        io::stdout().flush().context("flush stdout")?;

        let datadir_path_str = datadir.to_str().with_context(|| {
            format!(
@@ -245,19 +218,30 @@ impl PageServerNode {
            args.push(Cow::Borrowed("--update-config"));
        }

+        let mut taskset_args = vec![
+            "-c".to_string(),
+            format!("{}", self.conf.id.0 - 1),
+            self.env.pageserver_bin().to_string_lossy().into(),
+        ];
+        taskset_args.extend(args.into_iter().map(|a| a.to_string()));
+
        background_process::start_process(
            "pageserver",
            &datadir,
-            &self.env.pageserver_bin(),
-            args.iter().map(Cow::as_ref),
+            &PathBuf::from_str("/usr/bin/taskset").unwrap(),
+            taskset_args,
            self.pageserver_env_variables()?,
-            background_process::InitialPidFile::Expect(&self.pid_file()),
-            || match self.check_status() {
-                Ok(()) => Ok(true),
-                Err(PageserverHttpError::Transport(_)) => Ok(false),
-                Err(e) => Err(anyhow::anyhow!("Failed to check node status: {e}")),
+            background_process::InitialPidFile::Expect(self.pid_file()),
+            || async {
+                let st = self.check_status().await;
+                match st {
+                    Ok(()) => Ok(true),
+                    Err(mgmt_api::Error::ReceiveBody(_)) => Ok(false),
+                    Err(e) => Err(anyhow::anyhow!("Failed to check node status: {e}")),
+                }
            },
        )
+        .await
    }

    fn pageserver_basic_args<'a>(
@@ -303,7 +287,12 @@ impl PageServerNode {
        background_process::stop_process(immediate, "pageserver", &self.pid_file())
    }

-    pub fn page_server_psql_client(&self) -> anyhow::Result<postgres::Client> {
+    pub async fn page_server_psql_client(
+        &self,
+    ) -> anyhow::Result<(
+        tokio_postgres::Client,
+        tokio_postgres::Connection<tokio_postgres::Socket, tokio_postgres::tls::NoTlsStream>,
+    )> {
        let mut config = self.pg_connection_config.clone();
        if self.conf.pg_auth_type == AuthType::NeonJWT {
            let token = self
@@ -311,36 +300,18 @@ impl PageServerNode {
                .generate_auth_token(&Claims::new(None, Scope::PageServerApi))?;
            config = config.set_password(Some(token));
        }
-        Ok(config.connect_no_tls()?)
+        Ok(config.connect_no_tls().await?)
    }

-    fn http_request<U: IntoUrl>(&self, method: Method, url: U) -> anyhow::Result<RequestBuilder> {
-        let mut builder = self.http_client.request(method, url);
-        if self.conf.http_auth_type == AuthType::NeonJWT {
-            let token = self
-                .env
-                .generate_auth_token(&Claims::new(None, Scope::PageServerApi))?;
-            builder = builder.bearer_auth(token)
-        }
-        Ok(builder)
+    pub async fn check_status(&self) -> mgmt_api::Result<()> {
+        self.http_client.status().await
    }

-    pub fn check_status(&self) -> Result<()> {
-        self.http_request(Method::GET, format!("{}/status", self.http_base_url))?
-            .send()?
-            .error_from_body()?;
-        Ok(())
+    pub async fn tenant_list(&self) -> mgmt_api::Result<Vec<TenantInfo>> {
+        self.http_client.list_tenants().await
    }

-    pub fn tenant_list(&self) -> Result<Vec<TenantInfo>> {
-        Ok(self
-            .http_request(Method::GET, format!("{}/tenant", self.http_base_url))?
-            .send()?
-            .error_from_body()?
-            .json()?)
-    }
-
-    pub fn tenant_create(
+    pub async fn tenant_create(
        &self,
        new_tenant_id: TenantId,
        generation: Option<u32>,
@@ -418,23 +389,10 @@ impl PageServerNode {
        if !settings.is_empty() {
            bail!("Unrecognized tenant settings: {settings:?}")
        }
-        self.http_request(Method::POST, format!("{}/tenant", self.http_base_url))?
-            .json(&request)
-            .send()?
-            .error_from_body()?
-            .json::<Option<String>>()
-            .with_context(|| {
-                format!("Failed to parse tenant creation response for tenant id: {new_tenant_id:?}")
-            })?
-            .context("No tenant id was found in the tenant creation response")
-            .and_then(|tenant_id_string| {
-                tenant_id_string.parse().with_context(|| {
-                    format!("Failed to parse response string as tenant id: '{tenant_id_string}'")
-                })
-            })
+        Ok(self.http_client.tenant_create(&request).await?)
    }

-    pub fn tenant_config(
+    pub async fn tenant_config(
        &self,
        tenant_id: TenantId,
        mut settings: HashMap<&str, &str>,
@@ -513,54 +471,30 @@ impl PageServerNode {
            bail!("Unrecognized tenant settings: {settings:?}")
        }

-        self.http_request(Method::PUT, format!("{}/tenant/config", self.http_base_url))?
-            .json(&models::TenantConfigRequest { tenant_id, config })
-            .send()?
-            .error_from_body()?;
+        self.http_client
+            .tenant_config(&models::TenantConfigRequest { tenant_id, config })
+            .await?;

        Ok(())
    }

-    pub fn location_config(
+    pub async fn location_config(
        &self,
        tenant_id: TenantId,
        config: LocationConfig,
        flush_ms: Option<Duration>,
    ) -> anyhow::Result<()> {
-        let req_body = TenantLocationConfigRequest { tenant_id, config };
-
-        let path = format!(
-            "{}/tenant/{}/location_config",
-            self.http_base_url, tenant_id
-        );
-        let path = if let Some(flush_ms) = flush_ms {
-            format!("{}?flush_ms={}", path, flush_ms.as_millis())
-        } else {
-            path
-        };
-
-        self.http_request(Method::PUT, path)?
-            .json(&req_body)
-            .send()?
-            .error_from_body()?;
-
-        Ok(())
+        Ok(self
+            .http_client
+            .location_config(tenant_id, config, flush_ms)
+            .await?)
    }

-    pub fn timeline_list(&self, tenant_id: &TenantId) -> anyhow::Result<Vec<TimelineInfo>> {
-        let timeline_infos: Vec<TimelineInfo> = self
-            .http_request(
-                Method::GET,
-                format!("{}/tenant/{}/timeline", self.http_base_url, tenant_id),
-            )?
-            .send()?
-            .error_from_body()?
-            .json()?;
-
-        Ok(timeline_infos)
+    pub async fn timeline_list(&self, tenant_id: &TenantId) -> anyhow::Result<Vec<TimelineInfo>> {
+        Ok(self.http_client.list_timelines(*tenant_id).await?)
    }

-    pub fn timeline_create(
+    pub async fn timeline_create(
        &self,
        tenant_id: TenantId,
        new_timeline_id: Option<TimelineId>,
@@ -571,29 +505,14 @@ impl PageServerNode {
    ) -> anyhow::Result<TimelineInfo> {
        // If timeline ID was not specified, generate one
        let new_timeline_id = new_timeline_id.unwrap_or(TimelineId::generate());
-
-        self.http_request(
-            Method::POST,
-            format!("{}/tenant/{}/timeline", self.http_base_url, tenant_id),
-        )?
-        .json(&models::TimelineCreateRequest {
+        let req = models::TimelineCreateRequest {
            new_timeline_id,
            ancestor_start_lsn,
            ancestor_timeline_id,
            pg_version,
            existing_initdb_timeline_id,
-        })
-        .send()?
-        .error_from_body()?
-        .json::<Option<TimelineInfo>>()
-        .with_context(|| {
-            format!("Failed to parse timeline creation response for tenant id: {tenant_id}")
-        })?
-        .with_context(|| {
-            format!(
-                "No timeline id was found in the timeline creation response for tenant {tenant_id}"
-            )
-        })
+        };
+        Ok(self.http_client.timeline_create(tenant_id, &req).await?)
    }

    /// Import a basebackup prepared using either:
@@ -605,7 +524,7 @@ impl PageServerNode {
    /// * `timeline_id` - id to assign to imported timeline
    /// * `base` - (start lsn of basebackup, path to `base.tar` file)
    /// * `pg_wal` - if there's any wal to import: (end lsn, path to `pg_wal.tar`)
-    pub fn timeline_import(
+    pub async fn timeline_import(
        &self,
        tenant_id: TenantId,
        timeline_id: TimelineId,
@@ -613,36 +532,60 @@ impl PageServerNode {
        pg_wal: Option<(Lsn, PathBuf)>,
        pg_version: u32,
    ) -> anyhow::Result<()> {
-        let mut client = self.page_server_psql_client()?;
+        let (client, conn) = self.page_server_psql_client().await?;
+        // The connection object performs the actual communication with the database,
+        // so spawn it off to run on its own.
+        tokio::spawn(async move {
+            if let Err(e) = conn.await {
+                eprintln!("connection error: {}", e);
+            }
+        });
+        tokio::pin!(client);

        // Init base reader
        let (start_lsn, base_tarfile_path) = base;
-        let base_tarfile = File::open(base_tarfile_path)?;
-        let mut base_reader = BufReader::new(base_tarfile);
+        let base_tarfile = tokio::fs::File::open(base_tarfile_path).await?;
+        let base_tarfile = tokio_util::io::ReaderStream::new(base_tarfile);

        // Init wal reader if necessary
        let (end_lsn, wal_reader) = if let Some((end_lsn, wal_tarfile_path)) = pg_wal {
-            let wal_tarfile = File::open(wal_tarfile_path)?;
-            let wal_reader = BufReader::new(wal_tarfile);
+            let wal_tarfile = tokio::fs::File::open(wal_tarfile_path).await?;
+            let wal_reader = tokio_util::io::ReaderStream::new(wal_tarfile);
            (end_lsn, Some(wal_reader))
        } else {
            (start_lsn, None)
        };

-        // Import base
-        let import_cmd = format!(
-            "import basebackup {tenant_id} {timeline_id} {start_lsn} {end_lsn} {pg_version}"
-        );
-        let mut writer = client.copy_in(&import_cmd)?;
-        io::copy(&mut base_reader, &mut writer)?;
-        writer.finish()?;
+        let copy_in = |reader, cmd| {
+            let client = &client;
+            async move {
+                let writer = client.copy_in(&cmd).await?;
+                let writer = std::pin::pin!(writer);
+                let mut writer = writer.sink_map_err(|e| {
+                    std::io::Error::new(std::io::ErrorKind::Other, format!("{e}"))
+                });
+                let mut reader = std::pin::pin!(reader);
+                writer.send_all(&mut reader).await?;
+                writer.into_inner().finish().await?;
+                anyhow::Ok(())
+            }
+        };

+        // Import base
+        copy_in(
+            base_tarfile,
+            format!(
+                "import basebackup {tenant_id} {timeline_id} {start_lsn} {end_lsn} {pg_version}"
+            ),
+        )
+        .await?;
        // Import wal if necessary
-        if let Some(mut wal_reader) = wal_reader {
-            let import_cmd = format!("import wal {tenant_id} {timeline_id} {start_lsn} {end_lsn}");
-            let mut writer = client.copy_in(&import_cmd)?;
-            io::copy(&mut wal_reader, &mut writer)?;
-            writer.finish()?;
+        if let Some(wal_reader) = wal_reader {
+            copy_in(
+                wal_reader,
+                format!("import wal {tenant_id} {timeline_id} {start_lsn} {end_lsn}"),
+            )
+            .await?;
        }

        Ok(())
--- a/control_plane/src/safekeeper.rs
+++ b/control_plane/src/safekeeper.rs
@@ -13,7 +13,6 @@ use std::{io, result};
 use anyhow::Context;
 use camino::Utf8PathBuf;
 use postgres_connection::PgConnectionConfig;
-use reqwest::blocking::{Client, RequestBuilder, Response};
 use reqwest::{IntoUrl, Method};
 use thiserror::Error;
 use utils::{http::error::HttpErrorBody, id::NodeId};
@@ -34,12 +33,14 @@ pub enum SafekeeperHttpError {

 type Result<T> = result::Result<T, SafekeeperHttpError>;

+#[async_trait::async_trait]
 pub trait ResponseErrorMessageExt: Sized {
-    fn error_from_body(self) -> Result<Self>;
+    async fn error_from_body(self) -> Result<Self>;
 }

-impl ResponseErrorMessageExt for Response {
-    fn error_from_body(self) -> Result<Self> {
+#[async_trait::async_trait]
+impl ResponseErrorMessageExt for reqwest::Response {
+    async fn error_from_body(self) -> Result<Self> {
        let status = self.status();
        if !(status.is_client_error() || status.is_server_error()) {
            return Ok(self);
@@ -48,7 +49,7 @@ impl ResponseErrorMessageExt for Response {
        // reqwest does not export its error construction utility functions, so let's craft the message ourselves
        let url = self.url().to_owned();
        Err(SafekeeperHttpError::Response(
-            match self.json::<HttpErrorBody>() {
+            match self.json::<HttpErrorBody>().await {
                Ok(err_body) => format!("Error: {}", err_body.msg),
                Err(_) => format!("Http error ({}) at {}.", status.as_u16(), url),
            },
@@ -69,7 +70,7 @@ pub struct SafekeeperNode {

    pub pg_connection_config: PgConnectionConfig,
    pub env: LocalEnv,
-    pub http_client: Client,
+    pub http_client: reqwest::Client,
    pub http_base_url: String,
 }

@@ -80,7 +81,7 @@ impl SafekeeperNode {
            conf: conf.clone(),
            pg_connection_config: Self::safekeeper_connection_config(conf.pg_port),
            env: env.clone(),
-            http_client: Client::new(),
+            http_client: reqwest::Client::new(),
            http_base_url: format!("http://127.0.0.1:{}/v1", conf.http_port),
        }
    }
@@ -103,7 +104,7 @@ impl SafekeeperNode {
            .expect("non-Unicode path")
    }

-    pub fn start(&self, extra_opts: Vec<String>) -> anyhow::Result<Child> {
+    pub async fn start(&self, extra_opts: Vec<String>) -> anyhow::Result<Child> {
        print!(
            "Starting safekeeper at '{}' in '{}'",
            self.pg_connection_config.raw_address(),
@@ -191,13 +192,16 @@ impl SafekeeperNode {
            &self.env.safekeeper_bin(),
            &args,
            [],
-            background_process::InitialPidFile::Expect(&self.pid_file()),
-            || match self.check_status() {
-                Ok(()) => Ok(true),
-                Err(SafekeeperHttpError::Transport(_)) => Ok(false),
-                Err(e) => Err(anyhow::anyhow!("Failed to check node status: {e}")),
+            background_process::InitialPidFile::Expect(self.pid_file()),
+            || async {
+                match self.check_status().await {
+                    Ok(()) => Ok(true),
+                    Err(SafekeeperHttpError::Transport(_)) => Ok(false),
+                    Err(e) => Err(anyhow::anyhow!("Failed to check node status: {e}")),
+                }
            },
        )
+        .await
    }

    ///
@@ -216,7 +220,7 @@ impl SafekeeperNode {
        )
    }

-    fn http_request<U: IntoUrl>(&self, method: Method, url: U) -> RequestBuilder {
+    fn http_request<U: IntoUrl>(&self, method: Method, url: U) -> reqwest::RequestBuilder {
        // TODO: authentication
        //if self.env.auth_type == AuthType::NeonJWT {
        //    builder = builder.bearer_auth(&self.env.safekeeper_auth_token)
@@ -224,10 +228,12 @@ impl SafekeeperNode {
        self.http_client.request(method, url)
    }

-    pub fn check_status(&self) -> Result<()> {
+    pub async fn check_status(&self) -> Result<()> {
        self.http_request(Method::GET, format!("{}/{}", self.http_base_url, "status"))
-            .send()?
-            .error_from_body()?;
+            .send()
+            .await?
+            .error_from_body()
+            .await?;
        Ok(())
    }
 }
--- a/control_plane/src/tenant_migration.rs
+++ b/control_plane/src/tenant_migration.rs
@@ -19,11 +19,11 @@ use utils::{
 };

 /// Given an attached pageserver, retrieve the LSN for all timelines
-fn get_lsns(
+async fn get_lsns(
    tenant_id: TenantId,
    pageserver: &PageServerNode,
 ) -> anyhow::Result<HashMap<TimelineId, Lsn>> {
-    let timelines = pageserver.timeline_list(&tenant_id)?;
+    let timelines = pageserver.timeline_list(&tenant_id).await?;
    Ok(timelines
        .into_iter()
        .map(|t| (t.timeline_id, t.last_record_lsn))
@@ -32,13 +32,13 @@ fn get_lsns(

 /// Wait for the timeline LSNs on `pageserver` to catch up with or overtake
 /// `baseline`.
-fn await_lsn(
+async fn await_lsn(
    tenant_id: TenantId,
    pageserver: &PageServerNode,
    baseline: HashMap<TimelineId, Lsn>,
 ) -> anyhow::Result<()> {
    loop {
-        let latest = match get_lsns(tenant_id, pageserver) {
+        let latest = match get_lsns(tenant_id, pageserver).await {
            Ok(l) => l,
            Err(e) => {
                println!(
@@ -84,7 +84,7 @@ fn await_lsn(
 ///  - Coordinate attach/secondary/detach on pageservers
 ///  - call into attachment_service for generations
 ///  - reconfigure compute endpoints to point to new attached pageserver
-pub fn migrate_tenant(
+pub async fn migrate_tenant(
    env: &LocalEnv,
    tenant_id: TenantId,
    dest_ps: PageServerNode,
@@ -108,16 +108,18 @@ pub fn migrate_tenant(
        }
    }

-    let previous = attachment_service.inspect(tenant_id)?;
+    let previous = attachment_service.inspect(tenant_id).await?;
    let mut baseline_lsns = None;
    if let Some((generation, origin_ps_id)) = &previous {
        let origin_ps = PageServerNode::from_env(env, env.get_pageserver_conf(*origin_ps_id)?);

        if origin_ps_id == &dest_ps.conf.id {
            println!("🔁 Already attached to {origin_ps_id}, freshening...");
-            let gen = attachment_service.attach_hook(tenant_id, dest_ps.conf.id)?;
+            let gen = attachment_service
+                .attach_hook(tenant_id, dest_ps.conf.id)
+                .await?;
            let dest_conf = build_location_config(LocationConfigMode::AttachedSingle, gen, None);
-            dest_ps.location_config(tenant_id, dest_conf, None)?;
+            dest_ps.location_config(tenant_id, dest_conf, None).await?;
            println!("✅ Migration complete");
            return Ok(());
        }
@@ -126,20 +128,24 @@ pub fn migrate_tenant(

        let stale_conf =
            build_location_config(LocationConfigMode::AttachedStale, Some(*generation), None);
-        origin_ps.location_config(tenant_id, stale_conf, Some(Duration::from_secs(10)))?;
+        origin_ps
+            .location_config(tenant_id, stale_conf, Some(Duration::from_secs(10)))
+            .await?;

-        baseline_lsns = Some(get_lsns(tenant_id, &origin_ps)?);
+        baseline_lsns = Some(get_lsns(tenant_id, &origin_ps).await?);
    }

-    let gen = attachment_service.attach_hook(tenant_id, dest_ps.conf.id)?;
+    let gen = attachment_service
+        .attach_hook(tenant_id, dest_ps.conf.id)
+        .await?;
    let dest_conf = build_location_config(LocationConfigMode::AttachedMulti, gen, None);

    println!("🔁 Attaching to pageserver {}", dest_ps.conf.id);
-    dest_ps.location_config(tenant_id, dest_conf, None)?;
+    dest_ps.location_config(tenant_id, dest_conf, None).await?;

    if let Some(baseline) = baseline_lsns {
        println!("🕑 Waiting for LSN to catch up...");
-        await_lsn(tenant_id, &dest_ps, baseline)?;
+        await_lsn(tenant_id, &dest_ps, baseline).await?;
    }

    let cplane = ComputeControlPlane::load(env.clone())?;
@@ -149,7 +155,7 @@ pub fn migrate_tenant(
                "🔁 Reconfiguring endpoint {} to use pageserver {}",
                endpoint_name, dest_ps.conf.id
            );
-            endpoint.reconfigure(Some(dest_ps.conf.id))?;
+            endpoint.reconfigure(Some(dest_ps.conf.id)).await?;
        }
    }

@@ -159,7 +165,7 @@ pub fn migrate_tenant(
        }

        let other_ps = PageServerNode::from_env(env, other_ps_conf);
-        let other_ps_tenants = other_ps.tenant_list()?;
+        let other_ps_tenants = other_ps.tenant_list().await?;

        // Check if this tenant is attached
        let found = other_ps_tenants
@@ -181,7 +187,9 @@ pub fn migrate_tenant(
            "💤 Switching to secondary mode on pageserver {}",
            other_ps.conf.id
        );
-        other_ps.location_config(tenant_id, secondary_conf, None)?;
+        other_ps
+            .location_config(tenant_id, secondary_conf, None)
+            .await?;
    }

    println!(
@@ -189,7 +197,7 @@ pub fn migrate_tenant(
        dest_ps.conf.id
    );
    let dest_conf = build_location_config(LocationConfigMode::AttachedSingle, gen, None);
-    dest_ps.location_config(tenant_id, dest_conf, None)?;
+    dest_ps.location_config(tenant_id, dest_conf, None).await?;

    println!("✅ Migration complete");

--- a/libs/pageserver_api/Cargo.toml
+++ b/libs/pageserver_api/Cargo.toml
@@ -24,3 +24,4 @@ workspace_hack.workspace = true

 [dev-dependencies]
 bincode.workspace = true
+rand.workspace = true
--- a/libs/pageserver_api/src/key.rs
+++ b/libs/pageserver_api/src/key.rs
@@ -144,3 +144,37 @@ impl Key {
 pub fn is_rel_block_key(key: &Key) -> bool {
    key.field1 == 0x00 && key.field4 != 0
 }
+
+impl std::str::FromStr for Key {
+    type Err = anyhow::Error;
+
+    fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
+        Self::from_hex(s)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::str::FromStr;
+
+    use crate::key::Key;
+
+    use rand::Rng;
+    use rand::SeedableRng;
+
+    #[test]
+    fn display_fromstr_bijection() {
+        let mut rng = rand::rngs::StdRng::seed_from_u64(42);
+
+        let key = Key {
+            field1: rng.gen(),
+            field2: rng.gen(),
+            field3: rng.gen(),
+            field4: rng.gen(),
+            field5: rng.gen(),
+            field6: rng.gen(),
+        };
+
+        assert_eq!(key, Key::from_str(&format!("{key}")).unwrap());
+    }
+}
--- a/libs/pageserver_api/src/keyspace.rs
+++ b/libs/pageserver_api/src/keyspace.rs
@@ -1,11 +1,12 @@
-use crate::repository::{key_range_size, singleton_range, Key};
 use postgres_ffi::BLCKSZ;
 use std::ops::Range;

+use crate::key::Key;
+
 ///
 /// Represents a set of Keys, in a compact form.
 ///
-#[derive(Clone, Debug, Default)]
+#[derive(Clone, Debug, Default, PartialEq, Eq)]
 pub struct KeySpace {
    /// Contiguous ranges of keys that belong to the key space. In key order,
    /// and with no overlap.
@@ -186,6 +187,33 @@ impl KeySpaceRandomAccum {
    }
 }

+pub fn key_range_size(key_range: &Range<Key>) -> u32 {
+    let start = key_range.start;
+    let end = key_range.end;
+
+    if end.field1 != start.field1
+        || end.field2 != start.field2
+        || end.field3 != start.field3
+        || end.field4 != start.field4
+    {
+        return u32::MAX;
+    }
+
+    let start = (start.field5 as u64) << 32 | start.field6 as u64;
+    let end = (end.field5 as u64) << 32 | end.field6 as u64;
+
+    let diff = end - start;
+    if diff > u32::MAX as u64 {
+        u32::MAX
+    } else {
+        diff as u32
+    }
+}
+
+pub fn singleton_range(key: Key) -> Range<Key> {
+    key..key.next()
+}
+
 #[cfg(test)]
 mod tests {
    use super::*;
--- a/libs/pageserver_api/src/lib.rs
+++ b/libs/pageserver_api/src/lib.rs
@@ -5,6 +5,7 @@ use const_format::formatcp;
 /// Public API types
 pub mod control_api;
 pub mod key;
+pub mod keyspace;
 pub mod models;
 pub mod reltag;
 pub mod shard;
--- a/libs/pageserver_api/src/models.rs
+++ b/libs/pageserver_api/src/models.rs
@@ -1,5 +1,8 @@
+pub mod partitioning;
+
 use std::{
    collections::HashMap,
+    io::Read,
    num::{NonZeroU64, NonZeroUsize},
    time::SystemTime,
 };
@@ -17,7 +20,7 @@ use utils::{

 use crate::{reltag::RelTag, shard::TenantShardId};
 use anyhow::bail;
-use bytes::{BufMut, Bytes, BytesMut};
+use bytes::{Buf, BufMut, Bytes, BytesMut};

 /// The state of a tenant in this pageserver.
 ///
@@ -367,6 +370,14 @@ pub struct TenantInfo {
    pub attachment_status: TenantAttachmentStatus,
 }

+#[derive(Serialize, Deserialize, Clone)]
+pub struct TenantDetails {
+    #[serde(flatten)]
+    pub tenant_info: TenantInfo,
+
+    pub timelines: Vec<TimelineId>,
+}
+
 /// This represents the output of the "timeline_detail" and "timeline_list" API calls.
 #[derive(Debug, Serialize, Deserialize, Clone)]
 pub struct TimelineInfo {
@@ -574,6 +585,7 @@ pub enum PagestreamFeMessage {
 }

 // Wrapped in libpq CopyData
+#[derive(strum_macros::EnumProperty)]
 pub enum PagestreamBeMessage {
    Exists(PagestreamExistsResponse),
    Nblocks(PagestreamNblocksResponse),
@@ -582,6 +594,29 @@ pub enum PagestreamBeMessage {
    DbSize(PagestreamDbSizeResponse),
 }

+// Keep in sync with `pagestore_client.h`
+#[repr(u8)]
+enum PagestreamBeMessageTag {
+    Exists = 100,
+    Nblocks = 101,
+    GetPage = 102,
+    Error = 103,
+    DbSize = 104,
+}
+impl TryFrom<u8> for PagestreamBeMessageTag {
+    type Error = u8;
+    fn try_from(value: u8) -> Result<Self, u8> {
+        match value {
+            100 => Ok(PagestreamBeMessageTag::Exists),
+            101 => Ok(PagestreamBeMessageTag::Nblocks),
+            102 => Ok(PagestreamBeMessageTag::GetPage),
+            103 => Ok(PagestreamBeMessageTag::Error),
+            104 => Ok(PagestreamBeMessageTag::DbSize),
+            _ => Err(value),
+        }
+    }
+}
+
 #[derive(Debug, PartialEq, Eq)]
 pub struct PagestreamExistsRequest {
    pub latest: bool,
@@ -737,35 +772,91 @@ impl PagestreamBeMessage {
    pub fn serialize(&self) -> Bytes {
        let mut bytes = BytesMut::new();

+        use PagestreamBeMessageTag as Tag;
        match self {
            Self::Exists(resp) => {
-                bytes.put_u8(100); /* tag from pagestore_client.h */
+                bytes.put_u8(Tag::Exists as u8);
                bytes.put_u8(resp.exists as u8);
            }

            Self::Nblocks(resp) => {
-                bytes.put_u8(101); /* tag from pagestore_client.h */
+                bytes.put_u8(Tag::Nblocks as u8);
                bytes.put_u32(resp.n_blocks);
            }

            Self::GetPage(resp) => {
-                bytes.put_u8(102); /* tag from pagestore_client.h */
+                bytes.put_u8(Tag::GetPage as u8);
                bytes.put(&resp.page[..]);
            }

            Self::Error(resp) => {
-                bytes.put_u8(103); /* tag from pagestore_client.h */
+                bytes.put_u8(Tag::Error as u8);
                bytes.put(resp.message.as_bytes());
                bytes.put_u8(0); // null terminator
            }
            Self::DbSize(resp) => {
-                bytes.put_u8(104); /* tag from pagestore_client.h */
+                bytes.put_u8(Tag::DbSize as u8);
                bytes.put_i64(resp.db_size);
            }
        }

        bytes.into()
    }
+
+    pub fn deserialize(buf: Bytes) -> anyhow::Result<Self> {
+        let mut buf = buf.reader();
+        let msg_tag = buf.read_u8()?;
+
+        use PagestreamBeMessageTag as Tag;
+        let ok =
+            match Tag::try_from(msg_tag).map_err(|tag: u8| anyhow::anyhow!("invalid tag {tag}"))? {
+                Tag::Exists => {
+                    let exists = buf.read_u8()?;
+                    Self::Exists(PagestreamExistsResponse {
+                        exists: exists != 0,
+                    })
+                }
+                Tag::Nblocks => {
+                    let n_blocks = buf.read_u32::<BigEndian>()?;
+                    Self::Nblocks(PagestreamNblocksResponse { n_blocks })
+                }
+                Tag::GetPage => {
+                    let mut page = vec![0; 8192]; // TODO: use MaybeUninit
+                    buf.read_exact(&mut page)?;
+                    PagestreamBeMessage::GetPage(PagestreamGetPageResponse { page: page.into() })
+                }
+                Tag::Error => {
+                    let buf = buf.get_ref();
+                    let cstr = std::ffi::CStr::from_bytes_until_nul(buf)?;
+                    let rust_str = cstr.to_str()?;
+                    PagestreamBeMessage::Error(PagestreamErrorResponse {
+                        message: rust_str.to_owned(),
+                    })
+                }
+                Tag::DbSize => {
+                    let db_size = buf.read_i64::<BigEndian>()?;
+                    Self::DbSize(PagestreamDbSizeResponse { db_size })
+                }
+            };
+        let remaining = buf.into_inner();
+        if !remaining.is_empty() {
+            anyhow::bail!(
+                "remaining bytes in msg with tag={msg_tag}: {}",
+                remaining.len()
+            );
+        }
+        Ok(ok)
+    }
+
+    pub fn kind(&self) -> &'static str {
+        match self {
+            Self::Exists(_) => "Exists",
+            Self::Nblocks(_) => "Nblocks",
+            Self::GetPage(_) => "GetPage",
+            Self::Error(_) => "Error",
+            Self::DbSize(_) => "DbSize",
+        }
+    }
 }

 #[cfg(test)]
--- a/libs/pageserver_api/src/models/partitioning.rs
+++ b/libs/pageserver_api/src/models/partitioning.rs
@@ -0,0 +1,151 @@
+use utils::lsn::Lsn;
+
+#[derive(Debug, PartialEq, Eq)]
+pub struct Partitioning {
+    pub keys: crate::keyspace::KeySpace,
+
+    pub at_lsn: Lsn,
+}
+
+impl serde::Serialize for Partitioning {
+    fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
+    where
+        S: serde::Serializer,
+    {
+        pub struct KeySpace<'a>(&'a crate::keyspace::KeySpace);
+
+        impl<'a> serde::Serialize for KeySpace<'a> {
+            fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
+            where
+                S: serde::Serializer,
+            {
+                use serde::ser::SerializeSeq;
+                let mut seq = serializer.serialize_seq(Some(self.0.ranges.len()))?;
+                for kr in &self.0.ranges {
+                    seq.serialize_element(&KeyRange(kr))?;
+                }
+                seq.end()
+            }
+        }
+
+        use serde::ser::SerializeMap;
+        let mut map = serializer.serialize_map(Some(2))?;
+        map.serialize_key("keys")?;
+        map.serialize_value(&KeySpace(&self.keys))?;
+        map.serialize_key("at_lsn")?;
+        map.serialize_value(&WithDisplay(&self.at_lsn))?;
+        map.end()
+    }
+}
+
+pub struct WithDisplay<'a, T>(&'a T);
+
+impl<'a, T: std::fmt::Display> serde::Serialize for WithDisplay<'a, T> {
+    fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
+    where
+        S: serde::Serializer,
+    {
+        serializer.collect_str(&self.0)
+    }
+}
+
+pub struct KeyRange<'a>(&'a std::ops::Range<crate::key::Key>);
+
+impl<'a> serde::Serialize for KeyRange<'a> {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: serde::Serializer,
+    {
+        use serde::ser::SerializeTuple;
+        let mut t = serializer.serialize_tuple(2)?;
+        t.serialize_element(&WithDisplay(&self.0.start))?;
+        t.serialize_element(&WithDisplay(&self.0.end))?;
+        t.end()
+    }
+}
+
+impl<'a> serde::Deserialize<'a> for Partitioning {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: serde::Deserializer<'a>,
+    {
+        pub struct KeySpace(crate::keyspace::KeySpace);
+
+        impl<'de> serde::Deserialize<'de> for KeySpace {
+            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+            where
+                D: serde::Deserializer<'de>,
+            {
+                #[serde_with::serde_as]
+                #[derive(serde::Deserialize)]
+                #[serde(transparent)]
+                struct Key(#[serde_as(as = "serde_with::DisplayFromStr")] crate::key::Key);
+
+                #[serde_with::serde_as]
+                #[derive(serde::Deserialize)]
+                struct Range(Key, Key);
+
+                let ranges: Vec<Range> = serde::Deserialize::deserialize(deserializer)?;
+                Ok(Self(crate::keyspace::KeySpace {
+                    ranges: ranges
+                        .into_iter()
+                        .map(|Range(start, end)| (start.0..end.0))
+                        .collect(),
+                }))
+            }
+        }
+
+        #[serde_with::serde_as]
+        #[derive(serde::Deserialize)]
+        struct De {
+            keys: KeySpace,
+            #[serde_as(as = "serde_with::DisplayFromStr")]
+            at_lsn: Lsn,
+        }
+
+        let de: De = serde::Deserialize::deserialize(deserializer)?;
+        Ok(Self {
+            at_lsn: de.at_lsn,
+            keys: de.keys.0,
+        })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_serialization_roundtrip() {
+        let reference = r#"
+        {
+            "keys": [
+              [
+                "000000000000000000000000000000000000",
+                "000000000000000000000000000000000001"
+              ],
+              [
+                "000000067F00000001000000000000000000",
+                "000000067F00000001000000000000000002"
+              ],
+              [
+                "030000000000000000000000000000000000",
+                "030000000000000000000000000000000003"
+              ]
+            ],
+            "at_lsn": "0/2240160"
+        }
+        "#;
+
+        let de: Partitioning = serde_json::from_str(reference).unwrap();
+
+        let ser = serde_json::to_string(&de).unwrap();
+
+        let ser_de: serde_json::Value = serde_json::from_str(&ser).unwrap();
+
+        assert_eq!(
+            ser_de,
+            serde_json::from_str::<'_, serde_json::Value>(reference).unwrap()
+        );
+    }
+}
--- a/libs/pageserver_api/src/shard.rs
+++ b/libs/pageserver_api/src/shard.rs
@@ -81,6 +81,10 @@ impl TenantShardId {
    pub fn is_zero(&self) -> bool {
        self.shard_number == ShardNumber(0)
    }
+
+    pub fn is_unsharded(&self) -> bool {
+        self.shard_number == ShardNumber(0) && self.shard_count == ShardCount(0)
+    }
 }

 /// Formatting helper
--- a/libs/postgres_connection/src/lib.rs
+++ b/libs/postgres_connection/src/lib.rs
@@ -163,8 +163,18 @@ impl PgConnectionConfig {
    }

    /// Connect using postgres protocol with TLS disabled.
-    pub fn connect_no_tls(&self) -> Result<postgres::Client, postgres::Error> {
-        postgres::Config::from(self.to_tokio_postgres_config()).connect(postgres::NoTls)
+    pub async fn connect_no_tls(
+        &self,
+    ) -> Result<
+        (
+            tokio_postgres::Client,
+            tokio_postgres::Connection<tokio_postgres::Socket, tokio_postgres::tls::NoTlsStream>,
+        ),
+        postgres::Error,
+    > {
+        self.to_tokio_postgres_config()
+            .connect(postgres::NoTls)
+            .await
    }
 }

--- a/libs/utils/src/lsn.rs
+++ b/libs/utils/src/lsn.rs
@@ -366,6 +366,47 @@ impl MonotonicCounter<Lsn> for RecordLsn {
    }
 }

+/// Implements  [`rand::distributions::uniform::UniformSampler`] so we can sample [`Lsn`]s.
+pub struct LsnSampler(<u64 as rand::distributions::uniform::SampleUniform>::Sampler);
+
+impl rand::distributions::uniform::SampleUniform for Lsn {
+    type Sampler = LsnSampler;
+}
+
+impl rand::distributions::uniform::UniformSampler for LsnSampler {
+    type X = Lsn;
+
+    fn new<B1, B2>(low: B1, high: B2) -> Self
+    where
+        B1: rand::distributions::uniform::SampleBorrow<Self::X> + Sized,
+        B2: rand::distributions::uniform::SampleBorrow<Self::X> + Sized,
+    {
+        Self(
+            <u64 as rand::distributions::uniform::SampleUniform>::Sampler::new(
+                low.borrow().0,
+                high.borrow().0,
+            ),
+        )
+    }
+
+    fn new_inclusive<B1, B2>(low: B1, high: B2) -> Self
+    where
+        B1: rand::distributions::uniform::SampleBorrow<Self::X> + Sized,
+        B2: rand::distributions::uniform::SampleBorrow<Self::X> + Sized,
+    {
+        Self(
+            <u64 as rand::distributions::uniform::SampleUniform>::Sampler::new_inclusive(
+                low.borrow().0,
+                high.borrow().0,
+            ),
+        )
+    }
+
+    fn sample<R: rand::prelude::Rng + ?Sized>(&self, rng: &mut R) -> Self::X {
+        Lsn(self.0.sample(rng))
+    }
+}
+
 #[cfg(test)]
 mod tests {
    use crate::bin_ser::BeSer;
--- a/libs/utils/src/timeout.rs
+++ b/libs/utils/src/timeout.rs
@@ -2,8 +2,11 @@ use std::time::Duration;

 use tokio_util::sync::CancellationToken;

+#[derive(thiserror::Error, Debug)]
 pub enum TimeoutCancellableError {
+    #[error("Timed out")]
    Timeout,
+    #[error("Cancelled")]
    Cancelled,
 }

--- a/libs/walproposer/build.rs
+++ b/libs/walproposer/build.rs
@@ -1,3 +1,6 @@
+//! Links with walproposer, pgcommon, pgport and runs bindgen on walproposer.h
+//! to generate Rust bindings for it.
+
 use std::{env, path::PathBuf, process::Command};

 use anyhow::{anyhow, Context};
--- a/libs/walproposer/src/api_bindings.rs
+++ b/libs/walproposer/src/api_bindings.rs
@@ -1,3 +1,6 @@
+//! A C-Rust shim: defines implementation of C walproposer API, assuming wp
+//! callback_data stores Box to some Rust implementation.
+
 #![allow(dead_code)]

 use std::ffi::CStr;
--- a/pageserver/Cargo.toml
+++ b/pageserver/Cargo.toml
@@ -63,6 +63,7 @@ thiserror.workspace = true
 tokio = { workspace = true, features = ["process", "sync", "fs", "rt", "io-util", "time"] }
 tokio-io-timeout.workspace = true
 tokio-postgres.workspace = true
+tokio-stream.workspace = true
 tokio-util.workspace = true
 toml_edit = { workspace = true, features = [ "serde" ] }
 tracing.workspace = true
--- a/pageserver/client/Cargo.toml
+++ b/pageserver/client/Cargo.toml
@@ -0,0 +1,22 @@
+[package]
+name = "pageserver_client"
+version = "0.1.0"
+edition.workspace = true
+license.workspace = true
+
+[dependencies]
+pageserver_api.workspace = true
+thiserror.workspace = true
+async-trait.workspace = true
+reqwest.workspace = true
+utils.workspace = true
+serde.workspace = true
+workspace_hack = { version = "0.1", path = "../../workspace_hack" }
+tokio-postgres.workspace = true
+tokio-stream.workspace = true
+tokio.workspace = true
+futures.workspace = true
+tokio-util.workspace = true
+anyhow.workspace = true
+postgres.workspace = true
+bytes.workspace = true
--- a/pageserver/client/src/lib.rs
+++ b/pageserver/client/src/lib.rs
@@ -0,0 +1,2 @@
+pub mod mgmt_api;
+pub mod page_service;
--- a/pageserver/client/src/mgmt_api.rs
+++ b/pageserver/client/src/mgmt_api.rs
@@ -0,0 +1,200 @@
+use pageserver_api::models::*;
+use reqwest::{IntoUrl, Method};
+use utils::{
+    http::error::HttpErrorBody,
+    id::{TenantId, TimelineId},
+};
+
+#[derive(Debug)]
+pub struct Client {
+    mgmt_api_endpoint: String,
+    authorization_header: Option<String>,
+    client: reqwest::Client,
+}
+
+#[derive(thiserror::Error, Debug)]
+pub enum Error {
+    #[error("receive body: {0}")]
+    ReceiveBody(reqwest::Error),
+
+    #[error("receive error body: {0}")]
+    ReceiveErrorBody(String),
+
+    #[error("pageserver API: {0}")]
+    ApiError(String),
+}
+
+pub type Result<T> = std::result::Result<T, Error>;
+
+#[async_trait::async_trait]
+pub trait ResponseErrorMessageExt: Sized {
+    async fn error_from_body(self) -> Result<Self>;
+}
+
+#[async_trait::async_trait]
+impl ResponseErrorMessageExt for reqwest::Response {
+    async fn error_from_body(mut self) -> Result<Self> {
+        let status = self.status();
+        if !(status.is_client_error() || status.is_server_error()) {
+            return Ok(self);
+        }
+
+        let url = self.url().to_owned();
+        Err(match self.json::<HttpErrorBody>().await {
+            Ok(HttpErrorBody { msg }) => Error::ApiError(msg),
+            Err(_) => {
+                Error::ReceiveErrorBody(format!("Http error ({}) at {}.", status.as_u16(), url))
+            }
+        })
+    }
+}
+
+impl Client {
+    pub fn new(mgmt_api_endpoint: String, jwt: Option<&str>) -> Self {
+        Self {
+            mgmt_api_endpoint,
+            authorization_header: jwt.map(|jwt| format!("Bearer {jwt}")),
+            client: reqwest::Client::new(),
+        }
+    }
+
+    pub async fn list_tenants(&self) -> Result<Vec<pageserver_api::models::TenantInfo>> {
+        let uri = format!("{}/v1/tenant", self.mgmt_api_endpoint);
+        let resp = self.get(&uri).await?;
+        resp.json().await.map_err(Error::ReceiveBody)
+    }
+
+    pub async fn tenant_details(
+        &self,
+        tenant_id: TenantId,
+    ) -> Result<pageserver_api::models::TenantDetails> {
+        let uri = format!("{}/v1/tenant/{tenant_id}", self.mgmt_api_endpoint);
+        self.get(uri)
+            .await?
+            .json()
+            .await
+            .map_err(Error::ReceiveBody)
+    }
+
+    pub async fn list_timelines(
+        &self,
+        tenant_id: TenantId,
+    ) -> Result<Vec<pageserver_api::models::TimelineInfo>> {
+        let uri = format!("{}/v1/tenant/{tenant_id}/timeline", self.mgmt_api_endpoint);
+        self.get(&uri)
+            .await?
+            .json()
+            .await
+            .map_err(Error::ReceiveBody)
+    }
+
+    pub async fn timeline_info(
+        &self,
+        tenant_id: TenantId,
+        timeline_id: TimelineId,
+    ) -> Result<pageserver_api::models::TimelineInfo> {
+        let uri = format!(
+            "{}/v1/tenant/{tenant_id}/timeline/{timeline_id}",
+            self.mgmt_api_endpoint
+        );
+        self.get(&uri)
+            .await?
+            .json()
+            .await
+            .map_err(Error::ReceiveBody)
+    }
+
+    pub async fn keyspace(
+        &self,
+        tenant_id: TenantId,
+        timeline_id: TimelineId,
+    ) -> Result<pageserver_api::models::partitioning::Partitioning> {
+        let uri = format!(
+            "{}/v1/tenant/{tenant_id}/timeline/{timeline_id}/keyspace",
+            self.mgmt_api_endpoint
+        );
+        self.get(&uri)
+            .await?
+            .json()
+            .await
+            .map_err(Error::ReceiveBody)
+    }
+
+    async fn get<U: IntoUrl>(&self, uri: U) -> Result<reqwest::Response> {
+        self.request(Method::GET, uri, ()).await
+    }
+
+    async fn request<B: serde::Serialize, U: reqwest::IntoUrl>(
+        &self,
+        method: Method,
+        uri: U,
+        body: B,
+    ) -> Result<reqwest::Response> {
+        let req = self.client.request(method, uri);
+        let req = if let Some(value) = &self.authorization_header {
+            req.header(reqwest::header::AUTHORIZATION, value)
+        } else {
+            req
+        };
+        let res = req.json(&body).send().await.map_err(Error::ReceiveBody)?;
+        let response = res.error_from_body().await?;
+        Ok(response)
+    }
+
+    pub async fn status(&self) -> Result<()> {
+        let uri = format!("{}/v1/status", self.mgmt_api_endpoint);
+        self.get(&uri).await?;
+        Ok(())
+    }
+
+    pub async fn tenant_create(&self, req: &TenantCreateRequest) -> Result<TenantId> {
+        let uri = format!("{}/v1/tenant", self.mgmt_api_endpoint);
+        self.request(Method::POST, &uri, req)
+            .await?
+            .json()
+            .await
+            .map_err(Error::ReceiveBody)
+    }
+
+    pub async fn tenant_config(&self, req: &TenantConfigRequest) -> Result<()> {
+        let uri = format!("{}/v1/tenant/config", self.mgmt_api_endpoint);
+        self.request(Method::PUT, &uri, req).await?;
+        Ok(())
+    }
+
+    pub async fn location_config(
+        &self,
+        tenant_id: TenantId,
+        config: LocationConfig,
+        flush_ms: Option<std::time::Duration>,
+    ) -> Result<()> {
+        let req_body = TenantLocationConfigRequest { tenant_id, config };
+        let path = format!(
+            "{}/v1/tenant/{}/location_config",
+            self.mgmt_api_endpoint, tenant_id
+        );
+        let path = if let Some(flush_ms) = flush_ms {
+            format!("{}?flush_ms={}", path, flush_ms.as_millis())
+        } else {
+            path
+        };
+        self.request(Method::PUT, &path, &req_body).await?;
+        Ok(())
+    }
+
+    pub async fn timeline_create(
+        &self,
+        tenant_id: TenantId,
+        req: &TimelineCreateRequest,
+    ) -> Result<TimelineInfo> {
+        let uri = format!(
+            "{}/v1/tenant/{}/timeline",
+            self.mgmt_api_endpoint, tenant_id
+        );
+        self.request(Method::POST, &uri, req)
+            .await?
+            .json()
+            .await
+            .map_err(Error::ReceiveBody)
+    }
+}
--- a/pageserver/client/src/page_service.rs
+++ b/pageserver/client/src/page_service.rs
@@ -0,0 +1,151 @@
+use std::pin::Pin;
+
+use futures::SinkExt;
+use pageserver_api::{
+    models::{
+        PagestreamBeMessage, PagestreamFeMessage, PagestreamGetPageRequest,
+        PagestreamGetPageResponse,
+    },
+    reltag::RelTag,
+};
+use tokio::task::JoinHandle;
+use tokio_postgres::CopyOutStream;
+use tokio_stream::StreamExt;
+use tokio_util::sync::CancellationToken;
+use utils::{
+    id::{TenantId, TimelineId},
+    lsn::Lsn,
+};
+
+pub struct Client {
+    client: tokio_postgres::Client,
+    cancel_on_client_drop: Option<tokio_util::sync::DropGuard>,
+    conn_task: JoinHandle<()>,
+}
+
+pub struct BasebackupRequest {
+    pub tenant_id: TenantId,
+    pub timeline_id: TimelineId,
+    pub lsn: Option<Lsn>,
+    pub gzip: bool,
+}
+
+impl Client {
+    pub async fn new(connstring: String) -> anyhow::Result<Self> {
+        let (client, connection) = tokio_postgres::connect(&connstring, postgres::NoTls).await?;
+
+        let conn_task_cancel = CancellationToken::new();
+        let conn_task = tokio::spawn({
+            let conn_task_cancel = conn_task_cancel.clone();
+            async move {
+                tokio::select! {
+                    _ = conn_task_cancel.cancelled() => { }
+                    res = connection => {
+                        res.unwrap();
+                    }
+                }
+            }
+        });
+        Ok(Self {
+            cancel_on_client_drop: Some(conn_task_cancel.drop_guard()),
+            conn_task,
+            client,
+        })
+    }
+
+    pub async fn pagestream(
+        self,
+        tenant_id: TenantId,
+        timeline_id: TimelineId,
+    ) -> anyhow::Result<PagestreamClient> {
+        let copy_both: tokio_postgres::CopyBothDuplex<bytes::Bytes> = self
+            .client
+            .copy_both_simple(&format!("pagestream {tenant_id} {timeline_id}"))
+            .await?;
+        let Client {
+            cancel_on_client_drop,
+            conn_task,
+            client: _,
+        } = self;
+        Ok(PagestreamClient {
+            copy_both: Box::pin(copy_both),
+            conn_task,
+            cancel_on_client_drop,
+        })
+    }
+
+    pub async fn basebackup(&self, req: &BasebackupRequest) -> anyhow::Result<CopyOutStream> {
+        let BasebackupRequest {
+            tenant_id,
+            timeline_id,
+            lsn,
+            gzip,
+        } = req;
+        let mut args = Vec::with_capacity(5);
+        args.push("basebackup".to_string());
+        args.push(format!("{tenant_id}"));
+        args.push(format!("{timeline_id}"));
+        if let Some(lsn) = lsn {
+            args.push(format!("{lsn}"));
+        }
+        if *gzip {
+            args.push("--gzip".to_string())
+        }
+        Ok(self.client.copy_out(&args.join(" ")).await?)
+    }
+}
+
+/// Create using [`Client::pagestream`].
+pub struct PagestreamClient {
+    copy_both: Pin<Box<tokio_postgres::CopyBothDuplex<bytes::Bytes>>>,
+    cancel_on_client_drop: Option<tokio_util::sync::DropGuard>,
+    conn_task: JoinHandle<()>,
+}
+
+pub struct RelTagBlockNo {
+    pub rel_tag: RelTag,
+    pub block_no: u32,
+}
+
+impl PagestreamClient {
+    pub async fn shutdown(mut self) {
+        let _ = self.cancel_on_client_drop.take();
+        self.conn_task.await.unwrap();
+    }
+
+    pub async fn getpage(
+        &mut self,
+        key: RelTagBlockNo,
+        lsn: Lsn,
+    ) -> anyhow::Result<PagestreamGetPageResponse> {
+        let req = PagestreamGetPageRequest {
+            latest: false,
+            rel: key.rel_tag,
+            blkno: key.block_no,
+            lsn,
+        };
+        let req = PagestreamFeMessage::GetPage(req);
+        let req: bytes::Bytes = req.serialize();
+        // let mut req = tokio_util::io::ReaderStream::new(&req);
+        let mut req = tokio_stream::once(Ok(req));
+
+        self.copy_both.send_all(&mut req).await?;
+
+        let next: Option<Result<bytes::Bytes, _>> = self.copy_both.next().await;
+        let next: bytes::Bytes = next.unwrap()?;
+
+        let msg = PagestreamBeMessage::deserialize(next)?;
+        match msg {
+            PagestreamBeMessage::GetPage(p) => Ok(p),
+            PagestreamBeMessage::Error(e) => anyhow::bail!("Error: {:?}", e),
+            PagestreamBeMessage::Exists(_)
+            | PagestreamBeMessage::Nblocks(_)
+            | PagestreamBeMessage::DbSize(_) => {
+                anyhow::bail!(
+                    "unexpected be message kind in response to getpage request: {}",
+                    msg.kind()
+                )
+            }
+        }
+    }
+}
--- a/pageserver/pagebench/Cargo.toml
+++ b/pageserver/pagebench/Cargo.toml
@@ -0,0 +1,26 @@
+[package]
+name = "pagebench"
+version = "0.1.0"
+edition.workspace = true
+license.workspace = true
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow.workspace = true
+clap.workspace = true
+futures.workspace = true
+hdrhistogram.workspace = true
+humantime.workspace = true
+humantime-serde.workspace = true
+rand.workspace = true
+serde.workspace = true
+serde_json.workspace = true
+tracing.workspace = true
+tokio.workspace = true
+
+pageserver = { path = ".." }
+pageserver_client.workspace = true
+pageserver_api.workspace = true
+utils = { path = "../../libs/utils/" }
+workspace_hack = { version = "0.1", path = "../../workspace_hack" }
--- a/pageserver/pagebench/src/basebackup.rs
+++ b/pageserver/pagebench/src/basebackup.rs
@@ -0,0 +1,273 @@
+use anyhow::Context;
+use pageserver_client::page_service::BasebackupRequest;
+
+use utils::lsn::Lsn;
+
+use rand::prelude::*;
+use tokio::sync::Barrier;
+use tokio::task::JoinSet;
+use tracing::{debug, info, instrument};
+
+use std::collections::HashMap;
+use std::num::NonZeroUsize;
+use std::ops::Range;
+use std::sync::atomic::{AtomicU64, AtomicUsize, Ordering};
+use std::sync::{Arc, Mutex};
+use std::time::Instant;
+
+use crate::cli;
+use crate::util::tenant_timeline_id::TenantTimelineId;
+use crate::util::tokio_thread_local_stats::AllThreadLocalStats;
+use crate::util::{request_stats, tokio_thread_local_stats};
+
+/// basebackup@LatestLSN
+#[derive(clap::Parser)]
+pub(crate) struct Args {
+    #[clap(long, default_value = "http://localhost:9898")]
+    mgmt_api_endpoint: String,
+    #[clap(long, default_value = "localhost:64000")]
+    page_service_host_port: String,
+    #[clap(long)]
+    pageserver_jwt: Option<String>,
+    #[clap(long, default_value = "1")]
+    num_clients: NonZeroUsize,
+    #[clap(long, default_value = "1.0")]
+    gzip_probability: f64,
+    #[clap(long)]
+    runtime: Option<humantime::Duration>,
+    #[clap(long)]
+    limit_to_first_n_targets: Option<usize>,
+    targets: Option<Vec<TenantTimelineId>>,
+}
+
+#[derive(Debug, Default)]
+struct LiveStats {
+    completed_requests: AtomicU64,
+}
+
+impl LiveStats {
+    fn inc(&self) {
+        self.completed_requests.fetch_add(1, Ordering::Relaxed);
+    }
+}
+
+struct Target {
+    timeline: TenantTimelineId,
+    lsn_range: Option<Range<Lsn>>,
+}
+
+#[derive(serde::Serialize)]
+struct Output {
+    total: request_stats::Output,
+}
+
+tokio_thread_local_stats::declare!(STATS: request_stats::Stats);
+
+pub(crate) fn main(args: Args) -> anyhow::Result<()> {
+    tokio_thread_local_stats::main!(STATS, move |thread_local_stats| {
+        main_impl(args, thread_local_stats)
+    })
+}
+
+async fn main_impl(
+    args: Args,
+    all_thread_local_stats: AllThreadLocalStats<request_stats::Stats>,
+) -> anyhow::Result<()> {
+    let args: &'static Args = Box::leak(Box::new(args));
+
+    let mgmt_api_client = Arc::new(pageserver_client::mgmt_api::Client::new(
+        args.mgmt_api_endpoint.clone(),
+        args.pageserver_jwt.as_deref(),
+    ));
+
+    // discover targets
+    let timelines: Vec<TenantTimelineId> = cli::targets::discover(
+        &mgmt_api_client,
+        cli::targets::Spec {
+            limit_to_first_n_targets: args.limit_to_first_n_targets,
+            targets: args.targets.clone(),
+        },
+    )
+    .await?;
+    let mut js = JoinSet::new();
+    for timeline in &timelines {
+        js.spawn({
+            let timeline = *timeline;
+            // FIXME: this triggers initial logical size calculation
+            // https://github.com/neondatabase/neon/issues/6168
+            let info = mgmt_api_client
+                .timeline_info(timeline.tenant_id, timeline.timeline_id)
+                .await
+                .unwrap();
+            async move {
+                anyhow::Ok(Target {
+                    timeline,
+                    // TODO: support lsn_range != latest LSN
+                    lsn_range: Some(info.last_record_lsn..(info.last_record_lsn + 1)),
+                })
+            }
+        });
+    }
+    let mut all_targets: Vec<Target> = Vec::new();
+    while let Some(res) = js.join_next().await {
+        all_targets.push(res.unwrap().unwrap());
+    }
+
+    let live_stats = Arc::new(LiveStats::default());
+
+    let num_client_tasks = timelines.len();
+    let num_live_stats_dump = 1;
+    let num_work_sender_tasks = 1;
+
+    let start_work_barrier = Arc::new(tokio::sync::Barrier::new(
+        num_client_tasks + num_live_stats_dump + num_work_sender_tasks,
+    ));
+    let all_work_done_barrier = Arc::new(tokio::sync::Barrier::new(num_client_tasks));
+
+    tokio::spawn({
+        let stats = Arc::clone(&live_stats);
+        let start_work_barrier = Arc::clone(&start_work_barrier);
+        async move {
+            start_work_barrier.wait().await;
+            loop {
+                let start = std::time::Instant::now();
+                tokio::time::sleep(std::time::Duration::from_secs(1)).await;
+                let completed_requests = stats.completed_requests.swap(0, Ordering::Relaxed);
+                let elapsed = start.elapsed();
+                info!(
+                    "RPS: {:.0}",
+                    completed_requests as f64 / elapsed.as_secs_f64()
+                );
+            }
+        }
+    });
+
+    let mut work_senders = HashMap::new();
+    let mut tasks = Vec::new();
+    for tl in &timelines {
+        let (sender, receiver) = tokio::sync::mpsc::channel(1); // TODO: not sure what the implications of this are
+        work_senders.insert(tl, sender);
+        tasks.push(tokio::spawn(client(
+            args,
+            *tl,
+            Arc::clone(&start_work_barrier),
+            receiver,
+            Arc::clone(&all_work_done_barrier),
+            Arc::clone(&live_stats),
+        )));
+    }
+
+    let work_sender = async move {
+        start_work_barrier.wait().await;
+        loop {
+            let (timeline, work) = {
+                let mut rng = rand::thread_rng();
+                let target = all_targets.choose(&mut rng).unwrap();
+                let lsn = target.lsn_range.clone().map(|r| rng.gen_range(r));
+                (
+                    target.timeline,
+                    Work {
+                        lsn,
+                        gzip: rng.gen_bool(args.gzip_probability),
+                    },
+                )
+            };
+            let sender = work_senders.get(&timeline).unwrap();
+            // TODO: what if this blocks?
+            sender.send(work).await.ok().unwrap();
+        }
+    };
+
+    if let Some(runtime) = args.runtime {
+        match tokio::time::timeout(runtime.into(), work_sender).await {
+            Ok(()) => unreachable!("work sender never terminates"),
+            Err(_timeout) => {
+                // this implicitly drops the work_senders, making all the clients exit
+            }
+        }
+    } else {
+        work_sender.await;
+        unreachable!("work sender never terminates");
+    }
+
+    for t in tasks {
+        t.await.unwrap();
+    }
+
+    let output = Output {
+        total: {
+            let mut agg_stats = request_stats::Stats::new();
+            for stats in all_thread_local_stats.lock().unwrap().iter() {
+                let stats = stats.lock().unwrap();
+                agg_stats.add(&stats);
+            }
+            agg_stats.output()
+        },
+    };
+
+    let output = serde_json::to_string_pretty(&output).unwrap();
+    println!("{output}");
+
+    anyhow::Ok(())
+}
+
+#[derive(Copy, Clone)]
+struct Work {
+    lsn: Option<Lsn>,
+    gzip: bool,
+}
+
+#[instrument(skip_all)]
+async fn client(
+    args: &'static Args,
+    timeline: TenantTimelineId,
+    start_work_barrier: Arc<Barrier>,
+    mut work: tokio::sync::mpsc::Receiver<Work>,
+    all_work_done_barrier: Arc<Barrier>,
+    live_stats: Arc<LiveStats>,
+) {
+    start_work_barrier.wait().await;
+
+    let client = pageserver_client::page_service::Client::new(crate::util::connstring::connstring(
+        &args.page_service_host_port,
+        args.pageserver_jwt.as_deref(),
+    ))
+    .await
+    .unwrap();
+
+    while let Some(Work { lsn, gzip }) = work.recv().await {
+        let start = Instant::now();
+        let copy_out_stream = client
+            .basebackup(&BasebackupRequest {
+                tenant_id: timeline.tenant_id,
+                timeline_id: timeline.timeline_id,
+                lsn,
+                gzip,
+            })
+            .await
+            .with_context(|| format!("start basebackup for {timeline}"))
+            .unwrap();
+
+        use futures::StreamExt;
+        let size = Arc::new(AtomicUsize::new(0));
+        copy_out_stream
+            .for_each({
+                |r| {
+                    let size = Arc::clone(&size);
+                    async move {
+                        let size = Arc::clone(&size);
+                        size.fetch_add(r.unwrap().len(), Ordering::Relaxed);
+                    }
+                }
+            })
+            .await;
+        debug!("basebackup size is {} bytes", size.load(Ordering::Relaxed));
+        let elapsed = start.elapsed();
+        live_stats.inc();
+        STATS.with(|stats| {
+            stats.borrow().lock().unwrap().observe(elapsed).unwrap();
+        });
+    }
+
+    all_work_done_barrier.wait().await;
+}
--- a/pageserver/pagebench/src/cli.rs
+++ b/pageserver/pagebench/src/cli.rs
@@ -0,0 +1 @@
+pub(crate) mod targets;
--- a/pageserver/pagebench/src/cli/targets.rs
+++ b/pageserver/pagebench/src/cli/targets.rs
@@ -0,0 +1,37 @@
+use std::sync::Arc;
+
+use pageserver_client::mgmt_api;
+use tracing::info;
+
+use crate::util::{
+    discover_timelines::get_pageserver_tenant_timelines, tenant_timeline_id::TenantTimelineId,
+};
+
+pub(crate) struct Spec {
+    pub(crate) limit_to_first_n_targets: Option<usize>,
+    pub(crate) targets: Option<Vec<TenantTimelineId>>,
+}
+
+pub(crate) async fn discover(
+    api_client: &Arc<mgmt_api::Client>,
+    spec: Spec,
+) -> anyhow::Result<Vec<TenantTimelineId>> {
+    let mut timelines = if let Some(targets) = spec.targets {
+        targets
+    } else {
+        get_pageserver_tenant_timelines(api_client).await?
+    };
+
+    if let Some(limit) = spec.limit_to_first_n_targets {
+        timelines.sort(); // for determinism
+        timelines.truncate(limit);
+        if timelines.len() < limit {
+            anyhow::bail!("pageserver has less than limit_to_first_n_targets={limit} tenants");
+        }
+    }
+
+    info!("timelines:\n{:?}", timelines);
+    info!("number of timelines:\n{:?}", timelines.len());
+
+    Ok(timelines)
+}
--- a/pageserver/pagebench/src/getpage_latest_lsn.rs
+++ b/pageserver/pagebench/src/getpage_latest_lsn.rs
@@ -0,0 +1,341 @@
+use anyhow::Context;
+use futures::future::join_all;
+use pageserver::pgdatadir_mapping::key_to_rel_block;
+use pageserver::repository;
+use pageserver_api::key::is_rel_block_key;
+use pageserver_client::page_service::RelTagBlockNo;
+
+use utils::lsn::Lsn;
+
+use rand::prelude::*;
+use tokio::sync::Barrier;
+use tokio::task::JoinSet;
+use tracing::{info, instrument};
+
+use std::collections::HashMap;
+use std::future::Future;
+use std::num::NonZeroUsize;
+use std::pin::Pin;
+use std::sync::atomic::{AtomicU64, Ordering};
+use std::sync::{Arc, Mutex};
+use std::time::{Duration, Instant};
+
+use crate::cli;
+
+use crate::util::tenant_timeline_id::TenantTimelineId;
+use crate::util::tokio_thread_local_stats::AllThreadLocalStats;
+use crate::util::{request_stats, tokio_thread_local_stats};
+
+/// GetPage@LatestLSN, uniformly distributed across the compute-accessible keyspace.
+#[derive(clap::Parser)]
+pub(crate) struct Args {
+    #[clap(long, default_value = "http://localhost:9898")]
+    mgmt_api_endpoint: String,
+    #[clap(long, default_value = "postgres://postgres@localhost:64000")]
+    page_service_connstring: String,
+    #[clap(long)]
+    pageserver_jwt: Option<String>,
+    #[clap(long, default_value = "1")]
+    num_clients: NonZeroUsize,
+    #[clap(long)]
+    runtime: Option<humantime::Duration>,
+    #[clap(long)]
+    per_target_rate_limit: Option<usize>,
+    #[clap(long)]
+    limit_to_first_n_targets: Option<usize>,
+    targets: Option<Vec<TenantTimelineId>>,
+}
+
+#[derive(Debug, Default)]
+struct LiveStats {
+    completed_requests: AtomicU64,
+}
+
+impl LiveStats {
+    fn inc(&self) {
+        self.completed_requests.fetch_add(1, Ordering::Relaxed);
+    }
+}
+
+#[derive(Clone)]
+struct KeyRange {
+    timeline: TenantTimelineId,
+    timeline_lsn: Lsn,
+    start: i128,
+    end: i128,
+}
+
+impl KeyRange {
+    fn len(&self) -> i128 {
+        self.end - self.start
+    }
+}
+
+#[derive(serde::Serialize)]
+struct Output {
+    total: request_stats::Output,
+}
+
+tokio_thread_local_stats::declare!(STATS: request_stats::Stats);
+
+pub(crate) fn main(args: Args) -> anyhow::Result<()> {
+    tokio_thread_local_stats::main!(STATS, move |thread_local_stats| {
+        main_impl(args, thread_local_stats)
+    })
+}
+
+async fn main_impl(
+    args: Args,
+    all_thread_local_stats: AllThreadLocalStats<request_stats::Stats>,
+) -> anyhow::Result<()> {
+    let args: &'static Args = Box::leak(Box::new(args));
+
+    let mgmt_api_client = Arc::new(pageserver_client::mgmt_api::Client::new(
+        args.mgmt_api_endpoint.clone(),
+        args.pageserver_jwt.as_deref(),
+    ));
+
+    // discover targets
+    let timelines: Vec<TenantTimelineId> = cli::targets::discover(
+        &mgmt_api_client,
+        cli::targets::Spec {
+            limit_to_first_n_targets: args.limit_to_first_n_targets,
+            targets: args.targets.clone(),
+        },
+    )
+    .await?;
+
+    let mut js = JoinSet::new();
+    for timeline in &timelines {
+        js.spawn({
+            let mgmt_api_client = Arc::clone(&mgmt_api_client);
+            let timeline = *timeline;
+            async move {
+                let partitioning = mgmt_api_client
+                    .keyspace(timeline.tenant_id, timeline.timeline_id)
+                    .await?;
+                let lsn = partitioning.at_lsn;
+
+                let ranges = partitioning
+                    .keys
+                    .ranges
+                    .iter()
+                    .filter_map(|r| {
+                        let start = r.start;
+                        let end = r.end;
+                        // filter out non-relblock keys
+                        match (is_rel_block_key(&start), is_rel_block_key(&end)) {
+                            (true, true) => Some(KeyRange {
+                                timeline,
+                                timeline_lsn: lsn,
+                                start: start.to_i128(),
+                                end: end.to_i128(),
+                            }),
+                            (true, false) | (false, true) => {
+                                unimplemented!("split up range")
+                            }
+                            (false, false) => None,
+                        }
+                    })
+                    .collect::<Vec<_>>();
+
+                anyhow::Ok(ranges)
+            }
+        });
+    }
+    let mut all_ranges: Vec<KeyRange> = Vec::new();
+    while let Some(res) = js.join_next().await {
+        all_ranges.extend(res.unwrap().unwrap());
+    }
+
+    let live_stats = Arc::new(LiveStats::default());
+
+    let num_client_tasks = timelines.len();
+    let num_live_stats_dump = 1;
+    let num_work_sender_tasks = 1;
+
+    let start_work_barrier = Arc::new(tokio::sync::Barrier::new(
+        num_client_tasks + num_live_stats_dump + num_work_sender_tasks,
+    ));
+    let all_work_done_barrier = Arc::new(tokio::sync::Barrier::new(num_client_tasks));
+
+    tokio::spawn({
+        let stats = Arc::clone(&live_stats);
+        let start_work_barrier = Arc::clone(&start_work_barrier);
+        async move {
+            start_work_barrier.wait().await;
+            loop {
+                let start = std::time::Instant::now();
+                tokio::time::sleep(std::time::Duration::from_secs(1)).await;
+                let completed_requests = stats.completed_requests.swap(0, Ordering::Relaxed);
+                let elapsed = start.elapsed();
+                info!(
+                    "RPS: {:.0}",
+                    completed_requests as f64 / elapsed.as_secs_f64()
+                );
+            }
+        }
+    });
+
+    let mut work_senders = HashMap::new();
+    let mut tasks = Vec::new();
+    for tl in &timelines {
+        let (sender, receiver) = tokio::sync::mpsc::channel(10); // TODO: not sure what the implications of this are
+        work_senders.insert(tl, sender);
+        tasks.push(tokio::spawn(client(
+            args,
+            *tl,
+            Arc::clone(&start_work_barrier),
+            receiver,
+            Arc::clone(&all_work_done_barrier),
+            Arc::clone(&live_stats),
+        )));
+    }
+
+    let work_sender: Pin<Box<dyn Send + Future<Output = ()>>> = match args.per_target_rate_limit {
+        None => Box::pin(async move {
+            let weights = rand::distributions::weighted::WeightedIndex::new(
+                all_ranges.iter().map(|v| v.len()),
+            )
+            .unwrap();
+
+            start_work_barrier.wait().await;
+
+            loop {
+                let (range, key) = {
+                    let mut rng = rand::thread_rng();
+                    let r = &all_ranges[weights.sample(&mut rng)];
+                    let key: i128 = rng.gen_range(r.start..r.end);
+                    let key = repository::Key::from_i128(key);
+                    if key.field6 == 0xffffffff {
+                        // Hack around bug
+                        continue;
+                    }
+                    let (rel_tag, block_no) =
+                        key_to_rel_block(key).expect("we filter non-rel-block keys out above");
+                    (r, RelTagBlockNo { rel_tag, block_no })
+                };
+                let sender = work_senders.get(&range.timeline).unwrap();
+                // TODO: what if this blocks?
+                sender.send((key, range.timeline_lsn)).await.ok().unwrap();
+            }
+        }),
+        Some(rps_limit) => Box::pin(async move {
+            let period = Duration::from_secs_f64(1.0 / (rps_limit as f64));
+
+            let make_timeline_task: &dyn Fn(
+                TenantTimelineId,
+            )
+                -> Pin<Box<dyn Send + Future<Output = ()>>> = &|timeline| {
+                let sender = work_senders.get(&timeline).unwrap();
+                let ranges: Vec<KeyRange> = all_ranges
+                    .iter()
+                    .filter(|r| r.timeline == timeline)
+                    .cloned()
+                    .collect();
+                let weights = rand::distributions::weighted::WeightedIndex::new(
+                    ranges.iter().map(|v| v.len()),
+                )
+                .unwrap();
+
+                Box::pin(async move {
+                    let mut ticker = tokio::time::interval(period);
+                    ticker.set_missed_tick_behavior(
+                        /* TODO review this choice */
+                        tokio::time::MissedTickBehavior::Burst,
+                    );
+                    loop {
+                        ticker.tick().await;
+                        let (range, key) = {
+                            let mut rng = rand::thread_rng();
+                            let r = &ranges[weights.sample(&mut rng)];
+                            let key: i128 = rng.gen_range(r.start..r.end);
+                            let key = repository::Key::from_i128(key);
+                            let (rel_tag, block_no) = key_to_rel_block(key)
+                                .expect("we filter non-rel-block keys out above");
+                            (r, RelTagBlockNo { rel_tag, block_no })
+                        };
+                        sender.send((key, range.timeline_lsn)).await.ok().unwrap();
+                    }
+                })
+            };
+
+            let tasks: Vec<_> = work_senders
+                .keys()
+                .map(|tl| make_timeline_task(**tl))
+                .collect();
+
+            start_work_barrier.wait().await;
+
+            join_all(tasks).await;
+        }),
+    };
+
+    if let Some(runtime) = args.runtime {
+        match tokio::time::timeout(runtime.into(), work_sender).await {
+            Ok(()) => unreachable!("work sender never terminates"),
+            Err(_timeout) => {
+                // this implicitly drops the work_senders, making all the clients exit
+            }
+        }
+    } else {
+        work_sender.await;
+        unreachable!("work sender never terminates");
+    }
+
+    for t in tasks {
+        t.await.unwrap();
+    }
+
+    let output = Output {
+        total: {
+            let mut agg_stats = request_stats::Stats::new();
+            for stats in all_thread_local_stats.lock().unwrap().iter() {
+                let stats = stats.lock().unwrap();
+                agg_stats.add(&stats);
+            }
+            agg_stats.output()
+        },
+    };
+
+    let output = serde_json::to_string_pretty(&output).unwrap();
+    println!("{output}");
+
+    anyhow::Ok(())
+}
+
+#[instrument(skip_all)]
+async fn client(
+    args: &'static Args,
+    timeline: TenantTimelineId,
+    start_work_barrier: Arc<Barrier>,
+    mut work: tokio::sync::mpsc::Receiver<(RelTagBlockNo, Lsn)>,
+    all_work_done_barrier: Arc<Barrier>,
+    live_stats: Arc<LiveStats>,
+) {
+    start_work_barrier.wait().await;
+
+    let client = pageserver_client::page_service::Client::new(args.page_service_connstring.clone())
+        .await
+        .unwrap();
+    let mut client = client
+        .pagestream(timeline.tenant_id, timeline.timeline_id)
+        .await
+        .unwrap();
+
+    while let Some((key, lsn)) = work.recv().await {
+        let start = Instant::now();
+        client
+            .getpage(key, lsn)
+            .await
+            .with_context(|| format!("getpage for {timeline}"))
+            .unwrap();
+        let elapsed = start.elapsed();
+        live_stats.inc();
+        STATS.with(|stats| {
+            stats.borrow().lock().unwrap().observe(elapsed).unwrap();
+        });
+    }
+
+    all_work_done_barrier.wait().await;
+}
--- a/pageserver/pagebench/src/main.rs
+++ b/pageserver/pagebench/src/main.rs
@@ -0,0 +1,34 @@
+use clap::Parser;
+use utils::logging;
+
+pub(crate) mod cli;
+pub(crate) mod util;
+
+mod basebackup;
+mod getpage_latest_lsn;
+mod trigger_initial_size_calculation;
+
+/// Component-level performance test for pageserver.
+#[derive(clap::Parser)]
+enum Args {
+    Basebackup(basebackup::Args),
+    GetPageLatestLsn(getpage_latest_lsn::Args),
+    TriggerInitialSizeCalculation(trigger_initial_size_calculation::Args),
+}
+
+fn main() {
+    logging::init(
+        logging::LogFormat::Plain,
+        logging::TracingErrorLayerEnablement::Disabled,
+        logging::Output::Stderr,
+    )
+    .unwrap();
+
+    let args = Args::parse();
+    match args {
+        Args::Basebackup(args) => basebackup::main(args),
+        Args::GetPageLatestLsn(args) => getpage_latest_lsn::main(args),
+        Args::TriggerInitialSizeCalculation(args) => trigger_initial_size_calculation::main(args),
+    }
+    .unwrap()
+}
--- a/pageserver/pagebench/src/trigger_initial_size_calculation.rs
+++ b/pageserver/pagebench/src/trigger_initial_size_calculation.rs
@@ -0,0 +1,86 @@
+use std::sync::Arc;
+
+use humantime::Duration;
+use tokio::task::JoinSet;
+
+use crate::{cli, util::tenant_timeline_id::TenantTimelineId};
+
+#[derive(clap::Parser)]
+pub(crate) struct Args {
+    #[clap(long, default_value = "http://localhost:9898")]
+    mgmt_api_endpoint: String,
+    #[clap(long, default_value = "localhost:64000")]
+    page_service_host_port: String,
+    #[clap(long)]
+    pageserver_jwt: Option<String>,
+    #[clap(
+        long,
+        help = "if specified, poll mgmt api to check whether init logical size calculation has completed"
+    )]
+    poll_for_completion: Option<Duration>,
+    #[clap(long)]
+    limit_to_first_n_targets: Option<usize>,
+    targets: Option<Vec<TenantTimelineId>>,
+}
+
+pub(crate) fn main(args: Args) -> anyhow::Result<()> {
+    let rt = tokio::runtime::Builder::new_multi_thread()
+        .enable_all()
+        .build()
+        .unwrap();
+
+    let main_task = rt.spawn(main_impl(args));
+    rt.block_on(main_task).unwrap()
+}
+
+async fn main_impl(args: Args) -> anyhow::Result<()> {
+    let args: &'static Args = Box::leak(Box::new(args));
+
+    let mgmt_api_client = Arc::new(pageserver_client::mgmt_api::Client::new(
+        args.mgmt_api_endpoint.clone(),
+        args.pageserver_jwt.as_deref(),
+    ));
+
+    // discover targets
+    let timelines: Vec<TenantTimelineId> = cli::targets::discover(
+        &mgmt_api_client,
+        cli::targets::Spec {
+            limit_to_first_n_targets: args.limit_to_first_n_targets,
+            targets: args.targets.clone(),
+        },
+    )
+    .await?;
+
+    // kick it off
+
+    let mut js = JoinSet::new();
+    for tl in timelines {
+        let mgmt_api_client = Arc::clone(&mgmt_api_client);
+        js.spawn(async move {
+            // TODO: API to explicitly trigger initial logical size computation.
+            // Should probably also avoid making it a side effect of timeline details to trigger initial logical size calculation.
+            // => https://github.com/neondatabase/neon/issues/6168
+            let info = mgmt_api_client
+                .timeline_info(tl.tenant_id, tl.timeline_id)
+                .await
+                .unwrap();
+
+            if let Some(period) = args.poll_for_completion {
+                let mut ticker = tokio::time::interval(period.into());
+                ticker.set_missed_tick_behavior(tokio::time::MissedTickBehavior::Delay);
+                let mut info = info;
+                while !info.current_logical_size_is_accurate {
+                    ticker.tick().await;
+                    info = mgmt_api_client
+                        .timeline_info(tl.tenant_id, tl.timeline_id)
+                        .await
+                        .unwrap();
+                }
+            }
+        });
+    }
+    while let Some(res) = js.join_next().await {
+        let _: () = res.unwrap();
+    }
+    Ok(())
+}
--- a/pageserver/pagebench/src/util.rs
+++ b/pageserver/pagebench/src/util.rs
@@ -0,0 +1,6 @@
+pub(crate) mod connstring;
+pub(crate) mod discover_timelines;
+pub(crate) mod request_stats;
+pub(crate) mod tenant_timeline_id;
+#[macro_use]
+pub(crate) mod tokio_thread_local_stats;
--- a/pageserver/pagebench/src/util/connstring.rs
+++ b/pageserver/pagebench/src/util/connstring.rs
@@ -0,0 +1,8 @@
+pub(crate) fn connstring(host_port: &str, jwt: Option<&str>) -> String {
+    let colon_and_jwt = if let Some(jwt) = jwt {
+        format!(":{jwt}") // TODO: urlescape
+    } else {
+        String::new()
+    };
+    format!("postgres://postgres{colon_and_jwt}@{host_port}")
+}
--- a/pageserver/pagebench/src/util/discover_timelines.rs
+++ b/pageserver/pagebench/src/util/discover_timelines.rs
@@ -0,0 +1,45 @@
+use std::sync::Arc;
+
+use pageserver_client::mgmt_api;
+use tokio::task::JoinSet;
+use utils::id::TenantId;
+
+use super::tenant_timeline_id::TenantTimelineId;
+
+pub(crate) async fn get_pageserver_tenant_timelines(
+    api_client: &Arc<mgmt_api::Client>,
+) -> anyhow::Result<Vec<TenantTimelineId>> {
+    let mut timelines: Vec<TenantTimelineId> = Vec::new();
+    let mut tenants: Vec<TenantId> = Vec::new();
+    for ti in api_client.list_tenants().await? {
+        if !ti.id.is_unsharded() {
+            anyhow::bail!(
+                "only unsharded tenants are supported at this time: {}",
+                ti.id
+            );
+        }
+        tenants.push(ti.id.tenant_id)
+    }
+    let mut js = JoinSet::new();
+    for tenant_id in tenants {
+        js.spawn({
+            let mgmt_api_client = Arc::clone(api_client);
+            async move {
+                (
+                    tenant_id,
+                    mgmt_api_client.tenant_details(tenant_id).await.unwrap(),
+                )
+            }
+        });
+    }
+    while let Some(res) = js.join_next().await {
+        let (tenant_id, details) = res.unwrap();
+        for timeline_id in details.timelines {
+            timelines.push(TenantTimelineId {
+                tenant_id,
+                timeline_id,
+            });
+        }
+    }
+    Ok(timelines)
+}
--- a/pageserver/pagebench/src/util/request_stats.rs
+++ b/pageserver/pagebench/src/util/request_stats.rs
@@ -0,0 +1,88 @@
+use std::time::Duration;
+
+use anyhow::Context;
+
+pub(crate) struct Stats {
+    latency_histo: hdrhistogram::Histogram<u64>,
+}
+
+impl Stats {
+    pub(crate) fn new() -> Self {
+        Self {
+            // Initialize with fixed bounds so that we panic at runtime instead of resizing the histogram,
+            // which would skew the benchmark results.
+            latency_histo: hdrhistogram::Histogram::new_with_bounds(1, 1_000_000_000, 3).unwrap(),
+        }
+    }
+    pub(crate) fn observe(&mut self, latency: Duration) -> anyhow::Result<()> {
+        let micros: u64 = latency
+            .as_micros()
+            .try_into()
+            .context("latency greater than u64")?;
+        self.latency_histo
+            .record(micros)
+            .context("add to histogram")?;
+        Ok(())
+    }
+    pub(crate) fn output(&self) -> Output {
+        let latency_percentiles = std::array::from_fn(|idx| {
+            let micros = self
+                .latency_histo
+                .value_at_percentile(LATENCY_PERCENTILES[idx]);
+            Duration::from_micros(micros)
+        });
+        Output {
+            request_count: self.latency_histo.len(),
+            latency_mean: Duration::from_micros(self.latency_histo.mean() as u64),
+            latency_percentiles: LatencyPercentiles {
+                latency_percentiles,
+            },
+        }
+    }
+    pub(crate) fn add(&mut self, other: &Self) {
+        let Self {
+            ref mut latency_histo,
+        } = self;
+        latency_histo.add(&other.latency_histo).unwrap();
+    }
+}
+
+impl Default for Stats {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+const LATENCY_PERCENTILES: [f64; 4] = [95.0, 99.00, 99.90, 99.99];
+
+struct LatencyPercentiles {
+    latency_percentiles: [Duration; 4],
+}
+
+impl serde::Serialize for LatencyPercentiles {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: serde::Serializer,
+    {
+        use serde::ser::SerializeMap;
+        let mut ser = serializer.serialize_map(Some(LATENCY_PERCENTILES.len()))?;
+        for p in LATENCY_PERCENTILES {
+            ser.serialize_entry(
+                &format!("p{p}"),
+                &format!(
+                    "{}",
+                    &humantime::format_duration(self.latency_percentiles[0])
+                ),
+            )?;
+        }
+        ser.end()
+    }
+}
+
+#[derive(serde::Serialize)]
+pub(crate) struct Output {
+    request_count: u64,
+    #[serde(with = "humantime_serde")]
+    latency_mean: Duration,
+    latency_percentiles: LatencyPercentiles,
+}
--- a/pageserver/pagebench/src/util/tenant_timeline_id.rs
+++ b/pageserver/pagebench/src/util/tenant_timeline_id.rs
@@ -0,0 +1,34 @@
+use std::str::FromStr;
+
+use anyhow::Context;
+use utils::id::{TenantId, TimelineId};
+
+#[derive(Debug, PartialEq, Eq, Hash, Clone, Copy, PartialOrd, Ord)]
+pub(crate) struct TenantTimelineId {
+    pub(crate) tenant_id: TenantId,
+    pub(crate) timeline_id: TimelineId,
+}
+
+impl FromStr for TenantTimelineId {
+    type Err = anyhow::Error;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        let (tenant_id, timeline_id) = s
+            .split_once('/')
+            .context("tenant and timeline id must be separated by `/`")?;
+        let tenant_id = TenantId::from_str(tenant_id)
+            .with_context(|| format!("invalid tenant id: {tenant_id:?}"))?;
+        let timeline_id = TimelineId::from_str(timeline_id)
+            .with_context(|| format!("invalid timeline id: {timeline_id:?}"))?;
+        Ok(Self {
+            tenant_id,
+            timeline_id,
+        })
+    }
+}
+
+impl std::fmt::Display for TenantTimelineId {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}/{}", self.tenant_id, self.timeline_id)
+    }
+}
--- a/pageserver/pagebench/src/util/tokio_thread_local_stats.rs
+++ b/pageserver/pagebench/src/util/tokio_thread_local_stats.rs
@@ -0,0 +1,45 @@
+pub(crate) type ThreadLocalStats<T> = Arc<Mutex<T>>;
+pub(crate) type AllThreadLocalStats<T> = Arc<Mutex<Vec<ThreadLocalStats<T>>>>;
+
+macro_rules! declare {
+    ($THREAD_LOCAL_NAME:ident: $T:ty) => {
+        thread_local! {
+            pub static $THREAD_LOCAL_NAME: std::cell::RefCell<crate::util::tokio_thread_local_stats::ThreadLocalStats<$T>> = std::cell::RefCell::new(
+                std::sync::Arc::new(std::sync::Mutex::new(Default::default()))
+            );
+        }
+    };
+}
+
+use std::sync::{Arc, Mutex};
+
+pub(crate) use declare;
+
+macro_rules! main {
+    ($THREAD_LOCAL_NAME:ident, $main_impl:expr) => {{
+        let main_impl = $main_impl;
+        let all = Arc::new(Mutex::new(Vec::new()));
+
+        let rt = tokio::runtime::Builder::new_multi_thread()
+            .on_thread_start({
+                let all = Arc::clone(&all);
+                move || {
+                    // pre-initialize the thread local stats by accessesing them
+                    // (some stats like requests_stats::Stats are quite costly to initialize,
+                    //  we don't want to pay that cost during the measurement period)
+                    $THREAD_LOCAL_NAME.with(|stats| {
+                        let stats: Arc<_> = Arc::clone(&*stats.borrow());
+                        all.lock().unwrap().push(stats);
+                    });
+                }
+            })
+            .enable_all()
+            .build()
+            .unwrap();
+
+        let main_task = rt.spawn(main_impl(all));
+        rt.block_on(main_task).unwrap()
+    }};
+}
+
+pub(crate) use main;
--- a/pageserver/src/config.rs
+++ b/pageserver/src/config.rs
@@ -41,6 +41,8 @@ use crate::{
    TIMELINE_DELETE_MARK_SUFFIX, TIMELINE_UNINIT_MARK_SUFFIX,
 };

+use self::defaults::DEFAULT_CONCURRENT_TENANT_WARMUP;
+
 pub mod defaults {
    use crate::tenant::config::defaults::*;
    use const_format::formatcp;
@@ -61,6 +63,8 @@ pub mod defaults {

    pub const DEFAULT_LOG_FORMAT: &str = "plain";

+    pub const DEFAULT_CONCURRENT_TENANT_WARMUP: usize = 8;
+
    pub const DEFAULT_CONCURRENT_TENANT_SIZE_LOGICAL_SIZE_QUERIES: usize =
        super::ConfigurableSemaphore::DEFAULT_INITIAL.get();

@@ -94,6 +98,7 @@ pub mod defaults {
 #log_format = '{DEFAULT_LOG_FORMAT}'

 #concurrent_tenant_size_logical_size_queries = '{DEFAULT_CONCURRENT_TENANT_SIZE_LOGICAL_SIZE_QUERIES}'
+#concurrent_tenant_warmup = '{DEFAULT_CONCURRENT_TENANT_WARMUP}'

 #metric_collection_interval = '{DEFAULT_METRIC_COLLECTION_INTERVAL}'
 #cached_metric_collection_interval = '{DEFAULT_CACHED_METRIC_COLLECTION_INTERVAL}'
@@ -180,6 +185,11 @@ pub struct PageServerConf {

    pub log_format: LogFormat,

+    /// Number of tenants which will be concurrently loaded from remote storage proactively on startup,
+    /// does not limit tenants loaded in response to client I/O.  A lower value implicitly deprioritizes
+    /// loading such tenants, vs. other work in the system.
+    pub concurrent_tenant_warmup: ConfigurableSemaphore,
+
    /// Number of concurrent [`Tenant::gather_size_inputs`](crate::tenant::Tenant::gather_size_inputs) allowed.
    pub concurrent_tenant_size_logical_size_queries: ConfigurableSemaphore,
    /// Limit of concurrent [`Tenant::gather_size_inputs`] issued by module `eviction_task`.
@@ -283,6 +293,7 @@ struct PageServerConfigBuilder {

    log_format: BuilderValue<LogFormat>,

+    concurrent_tenant_warmup: BuilderValue<NonZeroUsize>,
    concurrent_tenant_size_logical_size_queries: BuilderValue<NonZeroUsize>,

    metric_collection_interval: BuilderValue<Duration>,
@@ -340,6 +351,8 @@ impl Default for PageServerConfigBuilder {
            .expect("cannot parse default keepalive interval")),
            log_format: Set(LogFormat::from_str(DEFAULT_LOG_FORMAT).unwrap()),

+            concurrent_tenant_warmup: Set(NonZeroUsize::new(DEFAULT_CONCURRENT_TENANT_WARMUP)
+                .expect("Invalid default constant")),
            concurrent_tenant_size_logical_size_queries: Set(
                ConfigurableSemaphore::DEFAULT_INITIAL,
            ),
@@ -453,6 +466,10 @@ impl PageServerConfigBuilder {
        self.log_format = BuilderValue::Set(log_format)
    }

+    pub fn concurrent_tenant_warmup(&mut self, u: NonZeroUsize) {
+        self.concurrent_tenant_warmup = BuilderValue::Set(u);
+    }
+
    pub fn concurrent_tenant_size_logical_size_queries(&mut self, u: NonZeroUsize) {
        self.concurrent_tenant_size_logical_size_queries = BuilderValue::Set(u);
    }
@@ -518,6 +535,9 @@ impl PageServerConfigBuilder {
    }

    pub fn build(self) -> anyhow::Result<PageServerConf> {
+        let concurrent_tenant_warmup = self
+            .concurrent_tenant_warmup
+            .ok_or(anyhow!("missing concurrent_tenant_warmup"))?;
        let concurrent_tenant_size_logical_size_queries = self
            .concurrent_tenant_size_logical_size_queries
            .ok_or(anyhow!(
@@ -570,6 +590,7 @@ impl PageServerConfigBuilder {
                .broker_keepalive_interval
                .ok_or(anyhow!("No broker keepalive interval provided"))?,
            log_format: self.log_format.ok_or(anyhow!("missing log_format"))?,
+            concurrent_tenant_warmup: ConfigurableSemaphore::new(concurrent_tenant_warmup),
            concurrent_tenant_size_logical_size_queries: ConfigurableSemaphore::new(
                concurrent_tenant_size_logical_size_queries,
            ),
@@ -807,6 +828,11 @@ impl PageServerConf {
                "log_format" => builder.log_format(
                    LogFormat::from_config(&parse_toml_string(key, item)?)?
                ),
+                "concurrent_tenant_warmup" => builder.concurrent_tenant_warmup({
+                    let input = parse_toml_string(key, item)?;
+                    let permits = input.parse::<usize>().context("expected a number of initial permits, not {s:?}")?;
+                    NonZeroUsize::new(permits).context("initial semaphore permits out of range: 0, use other configuration to disable a feature")?
+                }),
                "concurrent_tenant_size_logical_size_queries" => builder.concurrent_tenant_size_logical_size_queries({
                    let input = parse_toml_string(key, item)?;
                    let permits = input.parse::<usize>().context("expected a number of initial permits, not {s:?}")?;
@@ -904,6 +930,10 @@ impl PageServerConf {
            broker_endpoint: storage_broker::DEFAULT_ENDPOINT.parse().unwrap(),
            broker_keepalive_interval: Duration::from_secs(5000),
            log_format: LogFormat::from_str(defaults::DEFAULT_LOG_FORMAT).unwrap(),
+            concurrent_tenant_warmup: ConfigurableSemaphore::new(
+                NonZeroUsize::new(DEFAULT_CONCURRENT_TENANT_WARMUP)
+                    .expect("Invalid default constant"),
+            ),
            concurrent_tenant_size_logical_size_queries: ConfigurableSemaphore::default(),
            eviction_task_immitated_concurrent_logical_size_queries: ConfigurableSemaphore::default(
            ),
@@ -1122,6 +1152,9 @@ background_task_maximum_delay = '334 s'
                    storage_broker::DEFAULT_KEEPALIVE_INTERVAL
                )?,
                log_format: LogFormat::from_str(defaults::DEFAULT_LOG_FORMAT).unwrap(),
+                concurrent_tenant_warmup: ConfigurableSemaphore::new(
+                    NonZeroUsize::new(DEFAULT_CONCURRENT_TENANT_WARMUP).unwrap()
+                ),
                concurrent_tenant_size_logical_size_queries: ConfigurableSemaphore::default(),
                eviction_task_immitated_concurrent_logical_size_queries:
                    ConfigurableSemaphore::default(),
@@ -1188,6 +1221,9 @@ background_task_maximum_delay = '334 s'
                broker_endpoint: storage_broker::DEFAULT_ENDPOINT.parse().unwrap(),
                broker_keepalive_interval: Duration::from_secs(5),
                log_format: LogFormat::Json,
+                concurrent_tenant_warmup: ConfigurableSemaphore::new(
+                    NonZeroUsize::new(DEFAULT_CONCURRENT_TENANT_WARMUP).unwrap()
+                ),
                concurrent_tenant_size_logical_size_queries: ConfigurableSemaphore::default(),
                eviction_task_immitated_concurrent_logical_size_queries:
                    ConfigurableSemaphore::default(),
--- a/pageserver/src/http/mod.rs
+++ b/pageserver/src/http/mod.rs
@@ -1,4 +1,2 @@
 pub mod routes;
 pub use routes::make_router;
-
-pub use pageserver_api::models;
--- a/pageserver/src/http/routes.rs
+++ b/pageserver/src/http/routes.rs
@@ -14,6 +14,7 @@ use hyper::header;
 use hyper::StatusCode;
 use hyper::{Body, Request, Response, Uri};
 use metrics::launch_timestamp::LaunchTimestamp;
+use pageserver_api::models::TenantDetails;
 use pageserver_api::models::{
    DownloadRemoteLayersTaskSpawnRequest, LocationConfigMode, TenantAttachRequest,
    TenantLoadRequest, TenantLocationConfigRequest,
@@ -28,16 +29,13 @@ use utils::http::endpoint::request_span;
 use utils::http::json::json_request_or_empty_body;
 use utils::http::request::{get_request_param, must_get_query_param, parse_query_param};

-use super::models::{
-    StatusResponse, TenantConfigRequest, TenantCreateRequest, TenantCreateResponse, TenantInfo,
-    TimelineCreateRequest, TimelineGcRequest, TimelineInfo,
-};
 use crate::context::{DownloadBehavior, RequestContext};
 use crate::deletion_queue::DeletionQueueClient;
 use crate::metrics::{StorageTimeOperation, STORAGE_TIME_GLOBAL};
 use crate::pgdatadir_mapping::LsnForTimestamp;
 use crate::task_mgr::TaskKind;
 use crate::tenant::config::{LocationConf, TenantConfOpt};
+use crate::tenant::mgr::GetActiveTenantError;
 use crate::tenant::mgr::{
    GetTenantError, SetNewTenantConfigError, TenantManager, TenantMapError, TenantMapInsertError,
    TenantSlotError, TenantSlotUpsertError, TenantStateError,
@@ -50,6 +48,10 @@ use crate::tenant::timeline::Timeline;
 use crate::tenant::{LogicalSizeCalculationCause, PageReconstructError, TenantSharedResources};
 use crate::{config::PageServerConf, tenant::mgr};
 use crate::{disk_usage_eviction_task, tenant};
+use pageserver_api::models::{
+    StatusResponse, TenantConfigRequest, TenantCreateRequest, TenantCreateResponse, TenantInfo,
+    TimelineCreateRequest, TimelineGcRequest, TimelineInfo,
+};
 use utils::{
    auth::SwappableJwtAuth,
    generation::Generation,
@@ -65,7 +67,12 @@ use utils::{
 };

 // Imports only used for testing APIs
-use super::models::ConfigureFailpointsRequest;
+use pageserver_api::models::ConfigureFailpointsRequest;
+
+// For APIs that require an Active tenant, how long should we block waiting for that state?
+// This is not functionally necessary (clients will retry), but avoids generating a lot of
+// failed API calls while tenants are activating.
+const ACTIVE_TENANT_TIMEOUT: Duration = Duration::from_millis(5000);

 pub struct State {
    conf: &'static PageServerConf,
@@ -233,6 +240,19 @@ impl From<GetTenantError> for ApiError {
    }
 }

+impl From<GetActiveTenantError> for ApiError {
+    fn from(e: GetActiveTenantError) -> ApiError {
+        match e {
+            GetActiveTenantError::WillNotBecomeActive(_) => ApiError::Conflict(format!("{}", e)),
+            GetActiveTenantError::Cancelled => ApiError::ShuttingDown,
+            GetActiveTenantError::NotFound(gte) => gte.into(),
+            GetActiveTenantError::WaitForActiveTimeout { .. } => {
+                ApiError::ResourceUnavailable(format!("{}", e).into())
+            }
+        }
+    }
+}
+
 impl From<SetNewTenantConfigError> for ApiError {
    fn from(e: SetNewTenantConfigError) -> ApiError {
        match e {
@@ -435,7 +455,10 @@ async fn timeline_create_handler(
    let state = get_state(&request);

    async {
-        let tenant = state.tenant_manager.get_attached_tenant_shard(tenant_shard_id, true)?;
+        let tenant = state.tenant_manager.get_attached_tenant_shard(tenant_shard_id, false)?;
+
+        tenant.wait_to_become_active(ACTIVE_TENANT_TIMEOUT).await?;
+
        match tenant.create_timeline(
            new_timeline_id,
            request_data.ancestor_timeline_id.map(TimelineId::from),
@@ -694,11 +717,23 @@ async fn timeline_delete_handler(
    let timeline_id: TimelineId = parse_request_param(&request, "timeline_id")?;
    check_permission(&request, Some(tenant_shard_id.tenant_id))?;

-    let ctx = RequestContext::new(TaskKind::MgmtRequest, DownloadBehavior::Warn);
    let state = get_state(&request);

-    state.tenant_manager.delete_timeline(tenant_shard_id, timeline_id, &ctx)
-        .instrument(info_span!("timeline_delete", tenant_id=%tenant_shard_id.tenant_id, shard=%tenant_shard_id.shard_slug(), %timeline_id))
+    let tenant = state
+        .tenant_manager
+        .get_attached_tenant_shard(tenant_shard_id, false)
+        .map_err(|e| {
+            match e {
+                // GetTenantError has a built-in conversion to ApiError, but in this context we don't
+                // want to treat missing tenants as 404, to avoid ambiguity with successful deletions.
+                GetTenantError::NotFound(_) => ApiError::PreconditionFailed(
+                    "Requested tenant is missing".to_string().into_boxed_str(),
+                ),
+                e => e.into(),
+            }
+        })?;
+    tenant.wait_to_become_active(ACTIVE_TENANT_TIMEOUT).await?;
+    tenant.delete_timeline(timeline_id).instrument(info_span!("timeline_delete", tenant_id=%tenant_shard_id.tenant_id, shard=%tenant_shard_id.shard_slug(), %timeline_id))
        .await?;

    json_response(StatusCode::ACCEPTED, ())
@@ -838,11 +873,14 @@ async fn tenant_status(
        }

        let state = tenant.current_state();
-        Result::<_, ApiError>::Ok(TenantInfo {
-            id: tenant_shard_id,
-            state: state.clone(),
-            current_physical_size: Some(current_physical_size),
-            attachment_status: state.attachment_status(),
+        Result::<_, ApiError>::Ok(TenantDetails {
+            tenant_info: TenantInfo {
+                id: tenant_shard_id,
+                state: state.clone(),
+                current_physical_size: Some(current_physical_size),
+                attachment_status: state.attachment_status(),
+            },
+            timelines: tenant.list_timeline_ids(),
        })
    }
    .instrument(info_span!("tenant_status_handler",
@@ -1136,7 +1174,10 @@ async fn tenant_create_handler(

    // We created the tenant. Existing API semantics are that the tenant
    // is Active when this function returns.
-    if let res @ Err(_) = new_tenant.wait_to_become_active().await {
+    if let res @ Err(_) = new_tenant
+        .wait_to_become_active(ACTIVE_TENANT_TIMEOUT)
+        .await
+    {
        // This shouldn't happen because we just created the tenant directory
        // in tenant::mgr::create_tenant, and there aren't any remote timelines
        // to load, so, nothing can really fail during load.
@@ -1487,69 +1528,6 @@ async fn timeline_collect_keyspace(
    let timeline_id: TimelineId = parse_request_param(&request, "timeline_id")?;
    check_permission(&request, Some(tenant_shard_id.tenant_id))?;

-    struct Partitioning {
-        keys: crate::keyspace::KeySpace,
-
-        at_lsn: Lsn,
-    }
-
-    impl serde::Serialize for Partitioning {
-        fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
-        where
-            S: serde::Serializer,
-        {
-            use serde::ser::SerializeMap;
-            let mut map = serializer.serialize_map(Some(2))?;
-            map.serialize_key("keys")?;
-            map.serialize_value(&KeySpace(&self.keys))?;
-            map.serialize_key("at_lsn")?;
-            map.serialize_value(&WithDisplay(&self.at_lsn))?;
-            map.end()
-        }
-    }
-
-    struct WithDisplay<'a, T>(&'a T);
-
-    impl<'a, T: std::fmt::Display> serde::Serialize for WithDisplay<'a, T> {
-        fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
-        where
-            S: serde::Serializer,
-        {
-            serializer.collect_str(&self.0)
-        }
-    }
-
-    struct KeySpace<'a>(&'a crate::keyspace::KeySpace);
-
-    impl<'a> serde::Serialize for KeySpace<'a> {
-        fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
-        where
-            S: serde::Serializer,
-        {
-            use serde::ser::SerializeSeq;
-            let mut seq = serializer.serialize_seq(Some(self.0.ranges.len()))?;
-            for kr in &self.0.ranges {
-                seq.serialize_element(&KeyRange(kr))?;
-            }
-            seq.end()
-        }
-    }
-
-    struct KeyRange<'a>(&'a std::ops::Range<crate::repository::Key>);
-
-    impl<'a> serde::Serialize for KeyRange<'a> {
-        fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-        where
-            S: serde::Serializer,
-        {
-            use serde::ser::SerializeTuple;
-            let mut t = serializer.serialize_tuple(2)?;
-            t.serialize_element(&WithDisplay(&self.0.start))?;
-            t.serialize_element(&WithDisplay(&self.0.end))?;
-            t.end()
-        }
-    }
-
    let at_lsn: Option<Lsn> = parse_query_param(&request, "at_lsn")?;

    async {
@@ -1561,7 +1539,9 @@ async fn timeline_collect_keyspace(
            .await
            .map_err(|e| ApiError::InternalServerError(e.into()))?;

-        json_response(StatusCode::OK, Partitioning { keys, at_lsn })
+        let res = pageserver_api::models::partitioning::Partitioning { keys, at_lsn };
+
+        json_response(StatusCode::OK, res)
    }
    .instrument(info_span!("timeline_collect_keyspace", tenant_id = %tenant_shard_id.tenant_id, shard_id = %tenant_shard_id.shard_slug(), %timeline_id))
    .await
--- a/pageserver/src/lib.rs
+++ b/pageserver/src/lib.rs
@@ -10,7 +10,7 @@ pub mod deletion_queue;
 pub mod disk_usage_eviction_task;
 pub mod http;
 pub mod import_datadir;
-pub mod keyspace;
+pub use pageserver_api::keyspace;
 pub mod metrics;
 pub mod page_cache;
 pub mod page_service;
--- a/pageserver/src/metrics.rs
+++ b/pageserver/src/metrics.rs
@@ -343,15 +343,6 @@ pub(crate) mod page_cache_eviction_metrics {
    }
 }

-pub(crate) static PAGE_CACHE_ACQUIRE_PINNED_SLOT_TIME: Lazy<Histogram> = Lazy::new(|| {
-    register_histogram!(
-        "pageserver_page_cache_acquire_pinned_slot_seconds",
-        "Time spent acquiring a pinned slot in the page cache",
-        CRITICAL_OP_BUCKETS.into(),
-    )
-    .expect("failed to define a metric")
-});
-
 static PAGE_CACHE_ERRORS: Lazy<IntCounterVec> = Lazy::new(|| {
    register_int_counter_vec!(
        "page_cache_errors_total",
@@ -684,14 +675,54 @@ pub static STARTUP_IS_LOADING: Lazy<UIntGauge> = Lazy::new(|| {
    .expect("Failed to register pageserver_startup_is_loading")
 });

-/// How long did tenants take to go from construction to active state?
-pub(crate) static TENANT_ACTIVATION: Lazy<Histogram> = Lazy::new(|| {
-    register_histogram!(
+/// Metrics related to the lifecycle of a [`crate::tenant::Tenant`] object: things
+/// like how long it took to load.
+///
+/// Note that these are process-global metrics, _not_ per-tenant metrics.  Per-tenant
+/// metrics are rather expensive, and usually fine grained stuff makes more sense
+/// at a timeline level than tenant level.
+pub(crate) struct TenantMetrics {
+    /// How long did tenants take to go from construction to active state?
+    pub(crate) activation: Histogram,
+    pub(crate) preload: Histogram,
+    pub(crate) attach: Histogram,
+
+    /// How many tenants are included in the initial startup of the pagesrever?
+    pub(crate) startup_scheduled: IntCounter,
+    pub(crate) startup_complete: IntCounter,
+}
+
+pub(crate) static TENANT: Lazy<TenantMetrics> = Lazy::new(|| {
+    TenantMetrics {
+    activation: register_histogram!(
        "pageserver_tenant_activation_seconds",
        "Time taken by tenants to activate, in seconds",
        CRITICAL_OP_BUCKETS.into()
    )
-    .expect("Failed to register pageserver_tenant_activation_seconds metric")
+    .expect("Failed to register metric"),
+    preload: register_histogram!(
+        "pageserver_tenant_preload_seconds",
+        "Time taken by tenants to load remote metadata on startup/attach, in seconds",
+        CRITICAL_OP_BUCKETS.into()
+    )
+    .expect("Failed to register metric"),
+    attach: register_histogram!(
+        "pageserver_tenant_attach_seconds",
+        "Time taken by tenants to intialize, after remote metadata is already loaded",
+        CRITICAL_OP_BUCKETS.into()
+    )
+    .expect("Failed to register metric"),
+    startup_scheduled: register_int_counter!(
+        "pageserver_tenant_startup_scheduled",
+        "Number of tenants included in pageserver startup (doesn't count tenants attached later)"
+    ).expect("Failed to register metric"),
+    startup_complete: register_int_counter!(
+        "pageserver_tenant_startup_complete",
+        "Number of tenants that have completed warm-up, or activated on-demand during initial startup: \
+         should eventually reach `pageserver_tenant_startup_scheduled_total`.  Does not include broken \
+         tenants: such cases will lead to this metric never reaching the scheduled count."
+    ).expect("Failed to register metric"),
+}
 });

 /// Each `Timeline`'s  [`EVICTIONS_WITH_LOW_RESIDENCE_DURATION`] metric.
@@ -2213,6 +2244,9 @@ pub fn preinitialize_metrics() {
    // Deletion queue stats
    Lazy::force(&DELETION_QUEUE);

+    // Tenant stats
+    Lazy::force(&TENANT);
+
    // Tenant manager stats
    Lazy::force(&TENANT_MANAGER);

--- a/pageserver/src/page_cache.rs
+++ b/pageserver/src/page_cache.rs
@@ -550,7 +550,6 @@ impl PageCache {
    // not require changes.

    async fn try_get_pinned_slot_permit(&self) -> anyhow::Result<PinnedSlotsPermit> {
-        let timer = crate::metrics::PAGE_CACHE_ACQUIRE_PINNED_SLOT_TIME.start_timer();
        match tokio::time::timeout(
            // Choose small timeout, neon_smgr does its own retries.
            // https://neondb.slack.com/archives/C04DGM6SMTM/p1694786876476869
@@ -563,7 +562,6 @@ impl PageCache {
                res.expect("this semaphore is never closed"),
            )),
            Err(_timeout) => {
-                timer.stop_and_discard();
                crate::metrics::page_cache_errors_inc(
                    crate::metrics::PageCacheErrorKind::AcquirePinnedSlotTimeout,
                );
--- a/pageserver/src/pgdatadir_mapping.rs
+++ b/pageserver/src/pgdatadir_mapping.rs
@@ -173,14 +173,25 @@ impl Timeline {
            ));
        }

-        let nblocks = self.get_rel_size(tag, lsn, latest, ctx).await?;
-        if blknum >= nblocks {
-            debug!(
-                "read beyond EOF at {} blk {} at {}, size is {}: returning all-zeros page",
-                tag, blknum, lsn, nblocks
-            );
-            return Ok(ZERO_PAGE.clone());
-        }
+        // let nblocks = self.get_rel_size(tag, lsn, latest, ctx).await?;
+        // if blknum >= nblocks {
+        //     tracing::info!(
+        //         "read beyond EOF at {} blk {} at {}, size is {}: returning all-zeros page",
+        //         tag,
+        //         blknum,
+        //         lsn,
+        //         nblocks
+        //     );
+        //     return Ok(ZERO_PAGE.clone());
+        // } else {
+        //     tracing::info!(
+        //         "read within bounds at {} blk {} at {}, size is {}",
+        //         tag,
+        //         blknum,
+        //         lsn,
+        //         nblocks
+        //     );
+        // }

        let key = rel_block_to_key(tag, blknum);
        self.get(key, lsn, ctx).await
@@ -235,6 +246,7 @@ impl Timeline {
        }

        let key = rel_size_to_key(tag);
+        tracing::info!("rel size cache miss {tag} {lsn} {latest}");
        let mut buf = self.get(key, lsn, ctx).await?;
        let nblocks = buf.get_u32_le();

@@ -1776,6 +1788,7 @@ pub fn is_inherited_key(key: Key) -> bool {
    key != AUX_FILES_KEY
 }

+/// Guaranteed to return `Ok()` if [[is_rel_block_key]] returns `true` for `key`.
 pub fn key_to_rel_block(key: Key) -> anyhow::Result<(RelTag, BlockNumber)> {
    Ok(match key.field1 {
        0x00 => (
@@ -1790,7 +1803,6 @@ pub fn key_to_rel_block(key: Key) -> anyhow::Result<(RelTag, BlockNumber)> {
        _ => anyhow::bail!("unexpected value kind 0x{:02x}", key.field1),
    })
 }
-
 pub fn is_rel_fsm_block_key(key: Key) -> bool {
    key.field1 == 0x00 && key.field4 != 0 && key.field5 == FSM_FORKNUM && key.field6 != 0xffffffff
 }
--- a/pageserver/src/repository.rs
+++ b/pageserver/src/repository.rs
@@ -2,38 +2,11 @@ use crate::walrecord::NeonWalRecord;
 use anyhow::Result;
 use bytes::Bytes;
 use serde::{Deserialize, Serialize};
-use std::ops::{AddAssign, Range};
+use std::ops::AddAssign;
 use std::time::Duration;

 pub use pageserver_api::key::{Key, KEY_SIZE};

-pub fn key_range_size(key_range: &Range<Key>) -> u32 {
-    let start = key_range.start;
-    let end = key_range.end;
-
-    if end.field1 != start.field1
-        || end.field2 != start.field2
-        || end.field3 != start.field3
-        || end.field4 != start.field4
-    {
-        return u32::MAX;
-    }
-
-    let start = (start.field5 as u64) << 32 | start.field6 as u64;
-    let end = (end.field5 as u64) << 32 | end.field6 as u64;
-
-    let diff = end - start;
-    if diff > u32::MAX as u64 {
-        u32::MAX
-    } else {
-        diff as u32
-    }
-}
-
-pub fn singleton_range(key: Key) -> Range<Key> {
-    key..key.next()
-}
-
 /// A 'value' stored for a one Key.
 #[derive(Debug, Clone, Serialize, Deserialize)]
 #[cfg_attr(test, derive(PartialEq))]
--- a/pageserver/src/tenant.rs
+++ b/pageserver/src/tenant.rs
@@ -36,6 +36,8 @@ use utils::crashsafe::path_with_suffix_extension;
 use utils::fs_ext;
 use utils::sync::gate::Gate;
 use utils::sync::gate::GateGuard;
+use utils::timeout::timeout_cancellable;
+use utils::timeout::TimeoutCancellableError;

 use self::config::AttachedLocationConfig;
 use self::config::AttachmentMode;
@@ -59,7 +61,7 @@ use crate::deletion_queue::DeletionQueueClient;
 use crate::deletion_queue::DeletionQueueError;
 use crate::import_datadir;
 use crate::is_uninit_mark;
-use crate::metrics::TENANT_ACTIVATION;
+use crate::metrics::TENANT;
 use crate::metrics::{remove_tenant_metrics, TENANT_STATE_METRIC, TENANT_SYNTHETIC_SIZE_METRIC};
 use crate::repository::GcResult;
 use crate::task_mgr;
@@ -226,7 +228,7 @@ pub struct Tenant {

    /// The value creation timestamp, used to measure activation delay, see:
    /// <https://github.com/neondatabase/neon/issues/4025>
-    loading_started_at: Instant,
+    constructed_at: Instant,

    state: watch::Sender<TenantState>,

@@ -276,6 +278,11 @@ pub struct Tenant {

    eviction_task_tenant_state: tokio::sync::Mutex<EvictionTaskTenantState>,

+    /// If the tenant is in Activating state, notify this to encourage it
+    /// to proceed to Active as soon as possible, rather than waiting for lazy
+    /// background warmup.
+    pub(crate) activate_now_sem: tokio::sync::Semaphore,
+
    pub(crate) delete_progress: Arc<tokio::sync::Mutex<DeleteTenantFlow>>,

    // Cancellation token fires when we have entered shutdown().  This is a parent of
@@ -622,6 +629,14 @@ impl Tenant {
            "attach tenant",
            false,
            async move {
+                // Is this tenant being spawned as part of process startup?
+                let starting_up = init_order.is_some();
+                scopeguard::defer! {
+                    if starting_up {
+                        TENANT.startup_complete.inc();
+                    }
+                }
+
                // Ideally we should use Tenant::set_broken_no_wait, but it is not supposed to be used when tenant is in loading state.
                let make_broken =
                    |t: &Tenant, err: anyhow::Error| {
@@ -648,8 +663,62 @@ impl Tenant {
                    .as_mut()
                    .and_then(|x| x.initial_tenant_load_remote.take());

+                enum AttachType<'a> {
+                    // During pageserver startup, we are attaching this tenant lazily in the background
+                    Warmup(tokio::sync::SemaphorePermit<'a>),
+                    // During pageserver startup, we are attaching this tenant as soon as we can,
+                    // because a client tried to access it.
+                    OnDemand,
+                    // During normal operations after startup, we are attaching a tenant.
+                    Normal,
+                }
+
+                // Before doing any I/O, wait for either or:
+                // - A client to attempt to access to this tenant (on-demand loading)
+                // - A permit to become available in the warmup semaphore (background warmup)
+                //
+                // Some-ness of init_order is how we know if we're attaching during startup or later
+                // in process lifetime.
+                let attach_type = if init_order.is_some() {
+                    tokio::select!(
+                        _ = tenant_clone.activate_now_sem.acquire() => {
+                            tracing::info!("Activating tenant (on-demand)");
+                            AttachType::OnDemand
+                        },
+                        permit_result = conf.concurrent_tenant_warmup.inner().acquire() => {
+                            match permit_result {
+                                Ok(p) => {
+                                    tracing::info!("Activating tenant (warmup)");
+                                    AttachType::Warmup(p)
+                                }
+                                Err(_) => {
+                                    // This is unexpected: the warmup semaphore should stay alive
+                                    // for the lifetime of init_order.  Log a warning and proceed.
+                                    tracing::warn!("warmup_limit semaphore unexpectedly closed");
+                                    AttachType::Normal
+                                }
+                            }
+
+                        }
+                        _ = tenant_clone.cancel.cancelled() => {
+                            // This is safe, but should be pretty rare: it is interesting if a tenant
+                            // stayed in Activating for such a long time that shutdown found it in
+                            // that state.
+                            tracing::info!(state=%tenant_clone.current_state(), "Tenant shut down before activation");
+                            return Ok(());
+                        },
+                    )
+                } else {
+                    AttachType::Normal
+                };
+
+                let preload_timer = TENANT.preload.start_timer();
                let preload = match mode {
-                    SpawnMode::Create => {None},
+                    SpawnMode::Create => {
+                        // Don't count the skipped preload into the histogram of preload durations
+                        preload_timer.stop_and_discard();
+                        None
+                    },
                    SpawnMode::Normal => {
                        match &remote_storage {
                            Some(remote_storage) => Some(
@@ -659,7 +728,11 @@ impl Tenant {
                                        tracing::info_span!(parent: None, "attach_preload", tenant_id=%tenant_shard_id.tenant_id, shard_id=%tenant_shard_id.shard_slug()),
                                    )
                                    .await {
-                                        Ok(p) => p,
+                                        Ok(p) => {
+                                            preload_timer.observe_duration();
+                                            p
+                                        }
+                                            ,
                                        Err(e) => {
                                            make_broken(&tenant_clone, anyhow::anyhow!(e));
                                                return Ok(());
@@ -721,15 +794,43 @@ impl Tenant {
                    }
                }

+                // We will time the duration of the attach phase unless this is a creation (attach will do no work)
+                let attach_timer = match mode {
+                    SpawnMode::Create => None,
+                    SpawnMode::Normal => {Some(TENANT.attach.start_timer())}
+                };
                match tenant_clone.attach(preload, &ctx).await {
                    Ok(()) => {
                        info!("attach finished, activating");
+                        if let Some(t)=  attach_timer {t.observe_duration();}
                        tenant_clone.activate(broker_client, None, &ctx);
                    }
                    Err(e) => {
+                        if let Some(t)=  attach_timer {t.observe_duration();}
                        make_broken(&tenant_clone, anyhow::anyhow!(e));
                    }
                }
+
+                // If we are doing an opportunistic warmup attachment at startup, initialize
+                // logical size at the same time.  This is better than starting a bunch of idle tenants
+                // with cold caches and then coming back later to initialize their logical sizes.
+                //
+                // It also prevents the warmup proccess competing with the concurrency limit on
+                // logical size calculations: if logical size calculation semaphore is saturated,
+                // then warmup will wait for that before proceeding to the next tenant.
+                if let AttachType::Warmup(_permit) = attach_type {
+                    let mut futs = FuturesUnordered::new();
+                    let timelines: Vec<_> = tenant_clone.timelines.lock().unwrap().values().cloned().collect();
+                    for t in timelines {
+                        futs.push(t.await_initial_logical_size())
+                    }
+                    tracing::info!("Waiting for initial logical sizes while warming up...");
+                    while futs.next().await.is_some() {
+
+                    }
+                    tracing::info!("Warm-up complete");
+                }
+
                Ok(())
            }
            .instrument({
@@ -1451,6 +1552,10 @@ impl Tenant {
            .collect()
    }

+    pub fn list_timeline_ids(&self) -> Vec<TimelineId> {
+        self.timelines.lock().unwrap().keys().cloned().collect()
+    }
+
    /// This is used to create the initial 'main' timeline during bootstrapping,
    /// or when importing a new base backup. The caller is expected to load an
    /// initial image of the datadir to the new timeline after this.
@@ -1696,6 +1801,15 @@ impl Tenant {
        Ok(loaded_timeline)
    }

+    pub(crate) async fn delete_timeline(
+        self: Arc<Self>,
+        timeline_id: TimelineId,
+    ) -> Result<(), DeleteTimelineError> {
+        DeleteTimelineFlow::run(&self, timeline_id, false).await?;
+
+        Ok(())
+    }
+
    /// perform one garbage collection iteration, removing old data files from disk.
    /// this function is periodically called by gc task.
    /// also it can be explicitly requested through page server api 'do_gc' command.
@@ -1857,7 +1971,7 @@ impl Tenant {
                );
                *current_state = TenantState::Active;

-                let elapsed = self.loading_started_at.elapsed();
+                let elapsed = self.constructed_at.elapsed();
                let total_timelines = timelines_accessor.len();

                // log a lot of stuff, because some tenants sometimes suffer from user-visible
@@ -1872,7 +1986,7 @@ impl Tenant {
                    "activation attempt finished"
                );

-                TENANT_ACTIVATION.observe(elapsed.as_secs_f64());
+                TENANT.activation.observe(elapsed.as_secs_f64());
            });
        }
    }
@@ -2127,18 +2241,41 @@ impl Tenant {
        self.state.subscribe()
    }

-    pub(crate) async fn wait_to_become_active(&self) -> Result<(), GetActiveTenantError> {
+    /// The activate_now semaphore is initialized with zero units.  As soon as
+    /// we add a unit, waiters will be able to acquire a unit and proceed.
+    pub(crate) fn activate_now(&self) {
+        self.activate_now_sem.add_permits(1);
+    }
+
+    pub(crate) async fn wait_to_become_active(
+        &self,
+        timeout: Duration,
+    ) -> Result<(), GetActiveTenantError> {
        let mut receiver = self.state.subscribe();
        loop {
            let current_state = receiver.borrow_and_update().clone();
            match current_state {
                TenantState::Loading | TenantState::Attaching | TenantState::Activating(_) => {
                    // in these states, there's a chance that we can reach ::Active
-                    receiver.changed().await.map_err(
-                        |_e: tokio::sync::watch::error::RecvError|
-                            // Tenant existed but was dropped: report it as non-existent
-                            GetActiveTenantError::NotFound(GetTenantError::NotFound(self.tenant_shard_id.tenant_id))
-                    )?;
+                    self.activate_now();
+                    match timeout_cancellable(timeout, &self.cancel, receiver.changed()).await {
+                        Ok(r) => {
+                            r.map_err(
+                            |_e: tokio::sync::watch::error::RecvError|
+                                // Tenant existed but was dropped: report it as non-existent
+                                GetActiveTenantError::NotFound(GetTenantError::NotFound(self.tenant_shard_id.tenant_id))
+                        )?
+                        }
+                        Err(TimeoutCancellableError::Cancelled) => {
+                            return Err(GetActiveTenantError::Cancelled);
+                        }
+                        Err(TimeoutCancellableError::Timeout) => {
+                            return Err(GetActiveTenantError::WaitForActiveTimeout {
+                                latest_state: Some(self.current_state()),
+                                wait_time: timeout,
+                            });
+                        }
+                    }
                }
                TenantState::Active { .. } => {
                    return Ok(());
@@ -2463,7 +2600,7 @@ impl Tenant {
            conf,
            // using now here is good enough approximation to catch tenants with really long
            // activation times.
-            loading_started_at: Instant::now(),
+            constructed_at: Instant::now(),
            tenant_conf: Arc::new(RwLock::new(attached_conf)),
            timelines: Mutex::new(HashMap::new()),
            timelines_creating: Mutex::new(HashSet::new()),
@@ -2475,6 +2612,7 @@ impl Tenant {
            cached_logical_sizes: tokio::sync::Mutex::new(HashMap::new()),
            cached_synthetic_tenant_size: Arc::new(AtomicU64::new(0)),
            eviction_task_tenant_state: tokio::sync::Mutex::new(EvictionTaskTenantState::default()),
+            activate_now_sem: tokio::sync::Semaphore::new(0),
            delete_progress: Arc::new(tokio::sync::Mutex::new(DeleteTenantFlow::default())),
            cancel: CancellationToken::default(),
            gate: Gate::new(format!("Tenant<{tenant_shard_id}>")),
@@ -3059,6 +3197,7 @@ impl Tenant {
                    storage,
                    &self.tenant_shard_id,
                    &existing_initdb_timeline_id,
+                    &self.cancel,
                )
                .await
                .context("download initdb tar")?;
@@ -3099,6 +3238,7 @@ impl Tenant {
                            &timeline_id,
                            pgdata_zstd.try_clone().await?,
                            tar_zst_size,
+                            &self.cancel,
                        )
                        .await
                    },
@@ -3106,9 +3246,7 @@ impl Tenant {
                    3,
                    u32::MAX,
                    "persist_initdb_tar_zst",
-                    backoff::Cancel::new(self.cancel.clone(), || {
-                        anyhow::anyhow!("initdb upload cancelled")
-                    }),
+                    backoff::Cancel::new(self.cancel.clone(), || anyhow::anyhow!("Cancelled")),
                )
                .await?;

--- a/pageserver/src/tenant/block_io.rs
+++ b/pageserver/src/tenant/block_io.rs
@@ -22,6 +22,8 @@ pub trait BlockReader {
    /// A cursor caches the last accessed page, allowing for faster
    /// access if the same block is accessed repeatedly.
    fn block_cursor(&self) -> BlockCursor<'_>;
+
+    fn block_cursor_direct(&self) -> BlockCursor<'_>;
 }

 impl<B> BlockReader for &B
@@ -31,12 +33,17 @@ where
    fn block_cursor(&self) -> BlockCursor<'_> {
        (*self).block_cursor()
    }
+
+    fn block_cursor_direct(&self) -> BlockCursor<'_> {
+        (*self).block_cursor()
+    }
 }

 /// Reference to an in-memory copy of an immutable on-disk block.
 pub enum BlockLease<'a> {
    PageReadGuard(PageReadGuard<'static>),
    EphemeralFileMutableTail(&'a [u8; PAGE_SZ]),
+    Direct(bytes::Bytes),
    #[cfg(test)]
    Arc(std::sync::Arc<[u8; PAGE_SZ]>),
 }
@@ -61,6 +68,7 @@ impl<'a> Deref for BlockLease<'a> {
        match self {
            BlockLease::PageReadGuard(v) => v.deref(),
            BlockLease::EphemeralFileMutableTail(v) => v,
+            BlockLease::Direct(b) => <&[u8; PAGE_SZ]>::try_from(b as &[u8]).unwrap(),
            #[cfg(test)]
            BlockLease::Arc(v) => v.deref(),
        }
@@ -99,6 +107,24 @@ impl<'a> BlockReaderRef<'a> {
            VirtualFile(r) => r.read_blk(blknum).await,
        }
    }
+
+    #[inline(always)]
+    async fn read_blk_direct(
+        &self,
+        blknum: u32,
+        ctx: &RequestContext,
+    ) -> Result<BlockLease, std::io::Error> {
+        use BlockReaderRef::*;
+        match self {
+            FileBlockReader(r) => r.read_blk_direct(blknum, ctx).await,
+            EphemeralFile(r) => r.read_blk(blknum, ctx).await,
+            Adapter(r) => r.read_blk(blknum, ctx).await,
+            #[cfg(test)]
+            TestDisk(r) => r.read_blk(blknum),
+            #[cfg(test)]
+            VirtualFile(r) => r.read_blk(blknum).await,
+        }
+    }
 }

 ///
@@ -121,17 +147,28 @@ impl<'a> BlockReaderRef<'a> {
 /// ```
 ///
 pub struct BlockCursor<'a> {
+    direct: bool,
    reader: BlockReaderRef<'a>,
 }

 impl<'a> BlockCursor<'a> {
    pub(crate) fn new(reader: BlockReaderRef<'a>) -> Self {
-        BlockCursor { reader }
+        BlockCursor {
+            reader,
+            direct: false,
+        }
+    }
+    pub(crate) fn new_direct(reader: BlockReaderRef<'a>) -> Self {
+        BlockCursor {
+            reader,
+            direct: true,
+        }
    }
    // Needed by cli
    pub fn new_fileblockreader(reader: &'a FileBlockReader) -> Self {
        BlockCursor {
            reader: BlockReaderRef::FileBlockReader(reader),
+            direct: false,
        }
    }

@@ -146,7 +183,11 @@ impl<'a> BlockCursor<'a> {
        blknum: u32,
        ctx: &RequestContext,
    ) -> Result<BlockLease, std::io::Error> {
-        self.reader.read_blk(blknum, ctx).await
+        if self.direct {
+            self.reader.read_blk_direct(blknum, ctx).await
+        } else {
+            self.reader.read_blk(blknum, ctx).await
+        }
    }
 }

@@ -203,12 +244,27 @@ impl FileBlockReader {
            }
        }
    }
+
+    pub async fn read_blk_direct(
+        &self,
+        blknum: u32,
+        _ctx: &RequestContext,
+    ) -> Result<BlockLease, std::io::Error> {
+        let mut buf = bytes::BytesMut::zeroed(PAGE_SZ);
+        let buffer = <&mut [u8; PAGE_SZ]>::try_from(&mut buf as &mut [u8]).unwrap();
+        self.fill_buffer(buffer, blknum).await?;
+        Ok(BlockLease::Direct(buf.into()))
+    }
 }

 impl BlockReader for FileBlockReader {
    fn block_cursor(&self) -> BlockCursor<'_> {
        BlockCursor::new(BlockReaderRef::FileBlockReader(self))
    }
+
+    fn block_cursor_direct(&self) -> BlockCursor<'_> {
+        BlockCursor::new_direct(BlockReaderRef::FileBlockReader(self))
+    }
 }

 ///
--- a/pageserver/src/tenant/delete.rs
+++ b/pageserver/src/tenant/delete.rs
@@ -71,6 +71,7 @@ async fn create_remote_delete_mark(
    conf: &PageServerConf,
    remote_storage: &GenericRemoteStorage,
    tenant_shard_id: &TenantShardId,
+    cancel: &CancellationToken,
 ) -> Result<(), DeleteTenantError> {
    let remote_mark_path = remote_tenant_delete_mark_path(conf, tenant_shard_id)?;

@@ -87,8 +88,7 @@ async fn create_remote_delete_mark(
        FAILED_UPLOAD_WARN_THRESHOLD,
        FAILED_REMOTE_OP_RETRIES,
        "mark_upload",
-        // TODO: use a cancellation token (https://github.com/neondatabase/neon/issues/5066)
-        backoff::Cancel::new(CancellationToken::new(), || unreachable!()),
+        backoff::Cancel::new(cancel.clone(), || anyhow::anyhow!("Cancelled")),
    )
    .await
    .context("mark_upload")?;
@@ -170,6 +170,7 @@ async fn remove_tenant_remote_delete_mark(
    conf: &PageServerConf,
    remote_storage: Option<&GenericRemoteStorage>,
    tenant_shard_id: &TenantShardId,
+    cancel: &CancellationToken,
 ) -> Result<(), DeleteTenantError> {
    if let Some(remote_storage) = remote_storage {
        let path = remote_tenant_delete_mark_path(conf, tenant_shard_id)?;
@@ -179,8 +180,7 @@ async fn remove_tenant_remote_delete_mark(
            FAILED_UPLOAD_WARN_THRESHOLD,
            FAILED_REMOTE_OP_RETRIES,
            "remove_tenant_remote_delete_mark",
-            // TODO: use a cancellation token (https://github.com/neondatabase/neon/issues/5066)
-            backoff::Cancel::new(CancellationToken::new(), || unreachable!()),
+            backoff::Cancel::new(cancel.clone(), || anyhow::anyhow!("Cancelled")),
        )
        .await
        .context("remove_tenant_remote_delete_mark")?;
@@ -322,9 +322,15 @@ impl DeleteTenantFlow {
        // Though sounds scary, different mark name?
        // Detach currently uses remove_dir_all so in case of a crash we can end up in a weird state.
        if let Some(remote_storage) = &remote_storage {
-            create_remote_delete_mark(conf, remote_storage, &tenant.tenant_shard_id)
-                .await
-                .context("remote_mark")?
+            create_remote_delete_mark(
+                conf,
+                remote_storage,
+                &tenant.tenant_shard_id,
+                // Can't use tenant.cancel, it's already shut down.  TODO: wire in an appropriate token
+                &CancellationToken::new(),
+            )
+            .await
+            .context("remote_mark")?
        }

        fail::fail_point!("tenant-delete-before-create-local-mark", |_| {
@@ -524,8 +530,14 @@ impl DeleteTenantFlow {
                .context("timelines dir not empty")?;
        }

-        remove_tenant_remote_delete_mark(conf, remote_storage.as_ref(), &tenant.tenant_shard_id)
-            .await?;
+        remove_tenant_remote_delete_mark(
+            conf,
+            remote_storage.as_ref(),
+            &tenant.tenant_shard_id,
+            // Can't use tenant.cancel, it's already shut down.  TODO: wire in an appropriate token
+            &CancellationToken::new(),
+        )
+        .await?;

        fail::fail_point!("tenant-delete-before-cleanup-remaining-fs-traces", |_| {
            Err(anyhow::anyhow!(
--- a/pageserver/src/tenant/ephemeral_file.rs
+++ b/pageserver/src/tenant/ephemeral_file.rs
@@ -266,6 +266,10 @@ impl BlockReader for EphemeralFile {
    fn block_cursor(&self) -> super::block_io::BlockCursor<'_> {
        BlockCursor::new(super::block_io::BlockReaderRef::EphemeralFile(self))
    }
+
+    fn block_cursor_direct(&self) -> super::block_io::BlockCursor<'_> {
+        BlockCursor::new(super::block_io::BlockReaderRef::EphemeralFile(self))
+    }
 }

 #[cfg(test)]
--- a/pageserver/src/tenant/mgr.rs
+++ b/pageserver/src/tenant/mgr.rs
@@ -28,7 +28,7 @@ use crate::control_plane_client::{
    ControlPlaneClient, ControlPlaneGenerationsApi, RetryForeverError,
 };
 use crate::deletion_queue::DeletionQueueClient;
-use crate::metrics::TENANT_MANAGER as METRICS;
+use crate::metrics::{TENANT, TENANT_MANAGER as METRICS};
 use crate::task_mgr::{self, TaskKind};
 use crate::tenant::config::{
    AttachedLocationConfig, AttachmentMode, LocationConf, LocationMode, TenantConfOpt,
@@ -44,7 +44,6 @@ use utils::generation::Generation;
 use utils::id::{TenantId, TimelineId};

 use super::delete::DeleteTenantError;
-use super::timeline::delete::DeleteTimelineFlow;
 use super::TenantSharedResources;

 /// For a tenant that appears in TenantsMap, it may either be
@@ -430,6 +429,13 @@ pub async fn init_tenant_mgr(
    let tenant_generations =
        init_load_generations(conf, &tenant_configs, &resources, &cancel).await?;

+    tracing::info!(
+        "Attaching {} tenants at startup, warming up {} at a time",
+        tenant_configs.len(),
+        conf.concurrent_tenant_warmup.initial_permits()
+    );
+    TENANT.startup_scheduled.inc_by(tenant_configs.len() as u64);
+
    // Construct `Tenant` objects and start them running
    for (tenant_shard_id, location_conf) in tenant_configs {
        let tenant_dir_path = conf.tenant_path(&tenant_shard_id);
@@ -848,17 +854,6 @@ impl TenantManager {
        }
    }

-    pub(crate) async fn delete_timeline(
-        &self,
-        tenant_shard_id: TenantShardId,
-        timeline_id: TimelineId,
-        _ctx: &RequestContext,
-    ) -> Result<(), DeleteTimelineError> {
-        let tenant = self.get_attached_tenant_shard(tenant_shard_id, true)?;
-        DeleteTimelineFlow::run(&tenant, timeline_id, false).await?;
-        Ok(())
-    }
-
    #[instrument(skip_all, fields(tenant_id=%tenant_shard_id.tenant_id, shard_id=%tenant_shard_id.shard_slug()))]
    pub(crate) async fn upsert_location(
        &self,
@@ -1221,7 +1216,10 @@ pub(crate) async fn get_active_tenant_with_timeout(
                        // Fast path: we don't need to do any async waiting.
                        return Ok(tenant.clone());
                    }
-                    _ => (WaitFor::Tenant(tenant.clone()), tenant_shard_id),
+                    _ => {
+                        tenant.activate_now();
+                        (WaitFor::Tenant(tenant.clone()), tenant_shard_id)
+                    }
                }
            }
            Some(TenantSlot::Secondary) => {
@@ -1275,28 +1273,10 @@ pub(crate) async fn get_active_tenant_with_timeout(
    };

    tracing::debug!("Waiting for tenant to enter active state...");
-    match timeout_cancellable(
-        deadline.duration_since(Instant::now()),
-        cancel,
-        tenant.wait_to_become_active(),
-    )
-    .await
-    {
-        Ok(Ok(())) => Ok(tenant),
-        Ok(Err(e)) => Err(e),
-        Err(TimeoutCancellableError::Timeout) => {
-            let latest_state = tenant.current_state();
-            if latest_state == TenantState::Active {
-                Ok(tenant)
-            } else {
-                Err(GetActiveTenantError::WaitForActiveTimeout {
-                    latest_state: Some(latest_state),
-                    wait_time: timeout,
-                })
-            }
-        }
-        Err(TimeoutCancellableError::Cancelled) => Err(GetActiveTenantError::Cancelled),
-    }
+    tenant
+        .wait_to_become_active(deadline.duration_since(Instant::now()))
+        .await?;
+    Ok(tenant)
 }

 pub(crate) async fn delete_tenant(
--- a/pageserver/src/tenant/remote_timeline_client.rs
+++ b/pageserver/src/tenant/remote_timeline_client.rs
@@ -196,10 +196,12 @@ pub(crate) use upload::upload_initdb_dir;
 use utils::backoff::{
    self, exponential_backoff, DEFAULT_BASE_BACKOFF_SECONDS, DEFAULT_MAX_BACKOFF_SECONDS,
 };
+use utils::timeout::{timeout_cancellable, TimeoutCancellableError};

 use std::collections::{HashMap, VecDeque};
 use std::sync::atomic::{AtomicU32, Ordering};
 use std::sync::{Arc, Mutex};
+use std::time::Duration;

 use remote_storage::{DownloadError, GenericRemoteStorage, RemotePath};
 use std::ops::DerefMut;
@@ -316,6 +318,47 @@ pub struct RemoteTimelineClient {
    storage_impl: GenericRemoteStorage,

    deletion_queue_client: DeletionQueueClient,
+
+    cancel: CancellationToken,
+}
+
+/// This timeout is intended to deal with hangs in lower layers, e.g. stuck TCP flows.  It is not
+/// intended to be snappy enough for prompt shutdown, as we have a CancellationToken for that.
+const UPLOAD_TIMEOUT: Duration = Duration::from_secs(120);
+const DOWNLOAD_TIMEOUT: Duration = Duration::from_secs(120);
+
+/// Wrapper for timeout_cancellable that flattens result and converts TimeoutCancellableError to anyhow.
+///
+/// This is a convenience for the various upload functions.  In future
+/// the anyhow::Error result should be replaced with a more structured type that
+/// enables callers to avoid handling shutdown as an error.
+async fn upload_cancellable<F>(cancel: &CancellationToken, future: F) -> anyhow::Result<()>
+where
+    F: std::future::Future<Output = anyhow::Result<()>>,
+{
+    match timeout_cancellable(UPLOAD_TIMEOUT, cancel, future).await {
+        Ok(Ok(())) => Ok(()),
+        Ok(Err(e)) => Err(e),
+        Err(TimeoutCancellableError::Timeout) => Err(anyhow::anyhow!("Timeout")),
+        Err(TimeoutCancellableError::Cancelled) => Err(anyhow::anyhow!("Shutting down")),
+    }
+}
+/// Wrapper for timeout_cancellable that flattens result and converts TimeoutCancellableError to DownloaDError.
+async fn download_cancellable<F, R>(
+    cancel: &CancellationToken,
+    future: F,
+) -> Result<R, DownloadError>
+where
+    F: std::future::Future<Output = Result<R, DownloadError>>,
+{
+    match timeout_cancellable(DOWNLOAD_TIMEOUT, cancel, future).await {
+        Ok(Ok(r)) => Ok(r),
+        Ok(Err(e)) => Err(e),
+        Err(TimeoutCancellableError::Timeout) => {
+            Err(DownloadError::Other(anyhow::anyhow!("Timed out")))
+        }
+        Err(TimeoutCancellableError::Cancelled) => Err(DownloadError::Cancelled),
+    }
 }

 impl RemoteTimelineClient {
@@ -351,6 +394,7 @@ impl RemoteTimelineClient {
                &tenant_shard_id,
                &timeline_id,
            )),
+            cancel: CancellationToken::new(),
        }
    }

@@ -501,6 +545,7 @@ impl RemoteTimelineClient {
        &self,
        layer_file_name: &LayerFileName,
        layer_metadata: &LayerFileMetadata,
+        cancel: &CancellationToken,
    ) -> anyhow::Result<u64> {
        let downloaded_size = {
            let _unfinished_gauge_guard = self.metrics.call_begin(
@@ -517,6 +562,7 @@ impl RemoteTimelineClient {
                self.timeline_id,
                layer_file_name,
                layer_metadata,
+                cancel,
            )
            .measure_remote_op(
                self.tenant_shard_id.tenant_id,
@@ -971,6 +1017,7 @@ impl RemoteTimelineClient {
                    &self.timeline_id,
                    self.generation,
                    &index_part_with_deleted_at,
+                    &self.cancel,
                )
            },
            |_e| false,
@@ -980,8 +1027,7 @@ impl RemoteTimelineClient {
            // when executed as part of tenant deletion this happens in the background
            2,
            "persist_index_part_with_deleted_flag",
-            // TODO: use a cancellation token (https://github.com/neondatabase/neon/issues/5066)
-            backoff::Cancel::new(CancellationToken::new(), || unreachable!()),
+            backoff::Cancel::new(self.cancel.clone(), || anyhow::anyhow!("Cancelled")),
        )
        .await?;

@@ -1281,6 +1327,7 @@ impl RemoteTimelineClient {
                        path,
                        layer_metadata,
                        self.generation,
+                        &self.cancel,
                    )
                    .measure_remote_op(
                        self.tenant_shard_id.tenant_id,
@@ -1307,6 +1354,7 @@ impl RemoteTimelineClient {
                        &self.timeline_id,
                        self.generation,
                        index_part,
+                        &self.cancel,
                    )
                    .measure_remote_op(
                        self.tenant_shard_id.tenant_id,
@@ -1828,6 +1876,7 @@ mod tests {
                    &self.harness.tenant_shard_id,
                    &TIMELINE_ID,
                )),
+                cancel: CancellationToken::new(),
            })
        }

--- a/pageserver/src/tenant/remote_timeline_client/download.rs
+++ b/pageserver/src/tenant/remote_timeline_client/download.rs
@@ -5,7 +5,6 @@

 use std::collections::HashSet;
 use std::future::Future;
-use std::time::Duration;

 use anyhow::{anyhow, Context};
 use camino::{Utf8Path, Utf8PathBuf};
@@ -14,13 +13,17 @@ use tokio::fs::{self, File, OpenOptions};
 use tokio::io::{AsyncSeekExt, AsyncWriteExt};
 use tokio_util::sync::CancellationToken;
 use tracing::warn;
+use utils::timeout::timeout_cancellable;
 use utils::{backoff, crashsafe};

 use crate::config::PageServerConf;
-use crate::tenant::remote_timeline_client::{remote_layer_path, remote_timelines_path};
+use crate::tenant::remote_timeline_client::{
+    download_cancellable, remote_layer_path, remote_timelines_path, DOWNLOAD_TIMEOUT,
+};
 use crate::tenant::storage_layer::LayerFileName;
 use crate::tenant::timeline::span::debug_assert_current_span_has_tenant_and_timeline_id;
 use crate::tenant::Generation;
+use crate::virtual_file::on_fatal_io_error;
 use crate::TEMP_FILE_SUFFIX;
 use remote_storage::{DownloadError, GenericRemoteStorage, ListingMode};
 use utils::crashsafe::path_with_suffix_extension;
@@ -32,8 +35,6 @@ use super::{
    FAILED_DOWNLOAD_WARN_THRESHOLD, FAILED_REMOTE_OP_RETRIES, INITDB_PATH,
 };

-static MAX_DOWNLOAD_DURATION: Duration = Duration::from_secs(120);
-
 ///
 /// If 'metadata' is given, we will validate that the downloaded file's size matches that
 /// in the metadata. (In the future, we might do more cross-checks, like CRC validation)
@@ -46,6 +47,7 @@ pub async fn download_layer_file<'a>(
    timeline_id: TimelineId,
    layer_file_name: &'a LayerFileName,
    layer_metadata: &'a LayerFileMetadata,
+    cancel: &CancellationToken,
 ) -> Result<u64, DownloadError> {
    debug_assert_current_span_has_tenant_and_timeline_id();

@@ -73,14 +75,18 @@ pub async fn download_layer_file<'a>(
    // If pageserver crashes the temp file will be deleted on startup and re-downloaded.
    let temp_file_path = path_with_suffix_extension(&local_path, TEMP_DOWNLOAD_EXTENSION);

+    let cancel_inner = cancel.clone();
    let (mut destination_file, bytes_amount) = download_retry(
        || async {
            let destination_file = tokio::fs::File::create(&temp_file_path)
                .await
                .with_context(|| format!("create a destination file for layer '{temp_file_path}'"))
                .map_err(DownloadError::Other)?;
-            let download = storage
-                .download(&remote_path)
+
+            // Cancellation safety: it is safe to cancel this future, because it isn't writing to a local
+            // file: the write to local file doesn't start until after the request header is returned
+            // and we start draining the body stream below
+            let download = download_cancellable(&cancel_inner, storage.download(&remote_path))
                .await
                .with_context(|| {
                    format!(
@@ -94,12 +100,33 @@ pub async fn download_layer_file<'a>(

            let mut reader = tokio_util::io::StreamReader::new(download.download_stream);

-            let bytes_amount = tokio::time::timeout(
-                MAX_DOWNLOAD_DURATION,
+            // Cancellation safety: it is safe to cancel this future because it is writing into a temporary file,
+            // and we will unlink the temporary file if there is an error.  This unlink is important because we
+            // are in a retry loop, and we wouldn't want to leave behind a rogue write I/O to a file that
+            // we will imminiently try and write to again.
+            let bytes_amount: u64 = match timeout_cancellable(
+                DOWNLOAD_TIMEOUT,
+                &cancel_inner,
                tokio::io::copy_buf(&mut reader, &mut destination_file),
            )
            .await
-            .map_err(|e| DownloadError::Other(anyhow::anyhow!("Timed out  {:?}", e)))?
+            .with_context(|| {
+                format!(
+                    "download layer at remote path '{remote_path:?}' into file {temp_file_path:?}"
+                )
+            })
+            .map_err(DownloadError::Other)?
+            {
+                Ok(b) => Ok(b),
+                Err(e) => {
+                    // Remove incomplete files: on restart Timeline would do this anyway, but we must
+                    // do it here for the retry case.
+                    if let Err(e) = tokio::fs::remove_file(&temp_file_path).await {
+                        on_fatal_io_error(&e, &format!("Removing temporary file {temp_file_path}"));
+                    }
+                    Err(e)
+                }
+            }
            .with_context(|| {
                format!(
                    "download layer at remote path '{remote_path:?}' into file {temp_file_path:?}"
@@ -112,6 +139,7 @@ pub async fn download_layer_file<'a>(
            Ok((destination_file, bytes_amount))
        },
        &format!("download {remote_path:?}"),
+        cancel,
    )
    .await?;

@@ -188,8 +216,14 @@ pub async fn list_remote_timelines(
        anyhow::bail!("storage-sync-list-remote-timelines");
    });

+    let cancel_inner = cancel.clone();
    let listing = download_retry_forever(
-        || storage.list(Some(&remote_path), ListingMode::WithDelimiter),
+        || {
+            download_cancellable(
+                &cancel_inner,
+                storage.list(Some(&remote_path), ListingMode::WithDelimiter),
+            )
+        },
        &format!("list timelines for {tenant_shard_id}"),
        cancel,
    )
@@ -230,9 +264,13 @@ async fn do_download_index_part(

    let remote_path = remote_index_path(tenant_shard_id, timeline_id, index_generation);

+    let cancel_inner = cancel.clone();
    let index_part_bytes = download_retry_forever(
        || async {
-            let index_part_download = storage.download(&remote_path).await?;
+            // Cancellation: if is safe to cancel this future because we're just downloading into
+            // a memory buffer, not touching local disk.
+            let index_part_download =
+                download_cancellable(&cancel_inner, storage.download(&remote_path)).await?;

            let mut index_part_bytes = Vec::new();
            let mut stream = std::pin::pin!(index_part_download.download_stream);
@@ -347,10 +385,7 @@ pub(super) async fn download_index_part(
        FAILED_DOWNLOAD_WARN_THRESHOLD,
        FAILED_REMOTE_OP_RETRIES,
        "listing index_part files",
-        // TODO: use a cancellation token (https://github.com/neondatabase/neon/issues/5066)
-        backoff::Cancel::new(CancellationToken::new(), || -> anyhow::Error {
-            unreachable!()
-        }),
+        backoff::Cancel::new(cancel.clone(), || anyhow::anyhow!("Cancelled")),
    )
    .await
    .map_err(DownloadError::Other)?;
@@ -389,6 +424,7 @@ pub(crate) async fn download_initdb_tar_zst(
    storage: &GenericRemoteStorage,
    tenant_shard_id: &TenantShardId,
    timeline_id: &TimelineId,
+    cancel: &CancellationToken,
 ) -> Result<(Utf8PathBuf, File), DownloadError> {
    debug_assert_current_span_has_tenant_and_timeline_id();

@@ -406,6 +442,8 @@ pub(crate) async fn download_initdb_tar_zst(
        "{INITDB_PATH}.download-{timeline_id}.{TEMP_FILE_SUFFIX}"
    ));

+    let cancel_inner = cancel.clone();
+
    let file = download_retry(
        || async {
            let file = OpenOptions::new()
@@ -418,10 +456,14 @@ pub(crate) async fn download_initdb_tar_zst(
                .with_context(|| format!("tempfile creation {temp_path}"))
                .map_err(DownloadError::Other)?;

-            let download = storage.download(&remote_path).await?;
+            let download =
+                download_cancellable(&cancel_inner, storage.download(&remote_path)).await?;
            let mut download = tokio_util::io::StreamReader::new(download.download_stream);
            let mut writer = tokio::io::BufWriter::with_capacity(8 * 1024, file);

+            // TODO: this consumption of the response body should be subject to timeout + cancellation, but
+            // not without thinking carefully about how to recover safely from cancelling a write to
+            // local storage (e.g. by writing into a temp file as we do in download_layer)
            tokio::io::copy_buf(&mut download, &mut writer)
                .await
                .with_context(|| format!("download initdb.tar.zst at {remote_path:?}"))
@@ -437,6 +479,7 @@ pub(crate) async fn download_initdb_tar_zst(
            Ok(file)
        },
        &format!("download {remote_path}"),
+        cancel,
    )
    .await
    .map_err(|e| {
@@ -460,7 +503,11 @@ pub(crate) async fn download_initdb_tar_zst(
 /// with backoff.
 ///
 /// (See similar logic for uploads in `perform_upload_task`)
-async fn download_retry<T, O, F>(op: O, description: &str) -> Result<T, DownloadError>
+async fn download_retry<T, O, F>(
+    op: O,
+    description: &str,
+    cancel: &CancellationToken,
+) -> Result<T, DownloadError>
 where
    O: FnMut() -> F,
    F: Future<Output = Result<T, DownloadError>>,
@@ -471,10 +518,7 @@ where
        FAILED_DOWNLOAD_WARN_THRESHOLD,
        FAILED_REMOTE_OP_RETRIES,
        description,
-        // TODO: use a cancellation token (https://github.com/neondatabase/neon/issues/5066)
-        backoff::Cancel::new(CancellationToken::new(), || -> DownloadError {
-            unreachable!()
-        }),
+        backoff::Cancel::new(cancel.clone(), || DownloadError::Cancelled),
    )
    .await
 }
--- a/pageserver/src/tenant/remote_timeline_client/upload.rs
+++ b/pageserver/src/tenant/remote_timeline_client/upload.rs
@@ -7,12 +7,14 @@ use pageserver_api::shard::TenantShardId;
 use std::io::{ErrorKind, SeekFrom};
 use tokio::fs::{self, File};
 use tokio::io::AsyncSeekExt;
+use tokio_util::sync::CancellationToken;

 use super::Generation;
 use crate::{
    config::PageServerConf,
    tenant::remote_timeline_client::{
        index::IndexPart, remote_index_path, remote_initdb_archive_path, remote_path,
+        upload_cancellable,
    },
 };
 use remote_storage::GenericRemoteStorage;
@@ -29,6 +31,7 @@ pub(super) async fn upload_index_part<'a>(
    timeline_id: &TimelineId,
    generation: Generation,
    index_part: &'a IndexPart,
+    cancel: &CancellationToken,
 ) -> anyhow::Result<()> {
    tracing::trace!("uploading new index part");

@@ -44,14 +47,16 @@ pub(super) async fn upload_index_part<'a>(
    let index_part_bytes = bytes::Bytes::from(index_part_bytes);

    let remote_path = remote_index_path(tenant_shard_id, timeline_id, generation);
-    storage
-        .upload_storage_object(
+    upload_cancellable(
+        cancel,
+        storage.upload_storage_object(
            futures::stream::once(futures::future::ready(Ok(index_part_bytes))),
            index_part_size,
            &remote_path,
-        )
-        .await
-        .with_context(|| format!("upload index part for '{tenant_shard_id} / {timeline_id}'"))
+        ),
+    )
+    .await
+    .with_context(|| format!("upload index part for '{tenant_shard_id} / {timeline_id}'"))
 }

 /// Attempts to upload given layer files.
@@ -64,6 +69,7 @@ pub(super) async fn upload_timeline_layer<'a>(
    source_path: &'a Utf8Path,
    known_metadata: &'a LayerFileMetadata,
    generation: Generation,
+    cancel: &CancellationToken,
 ) -> anyhow::Result<()> {
    fail_point!("before-upload-layer", |_| {
        bail!("failpoint before-upload-layer")
@@ -107,8 +113,7 @@ pub(super) async fn upload_timeline_layer<'a>(

    let reader = tokio_util::io::ReaderStream::with_capacity(source_file, super::BUFFER_SIZE);

-    storage
-        .upload(reader, fs_size, &storage_path, None)
+    upload_cancellable(cancel, storage.upload(reader, fs_size, &storage_path, None))
        .await
        .with_context(|| format!("upload layer from local path '{source_path}'"))?;

@@ -122,6 +127,7 @@ pub(crate) async fn upload_initdb_dir(
    timeline_id: &TimelineId,
    mut initdb_tar_zst: File,
    size: u64,
+    cancel: &CancellationToken,
 ) -> anyhow::Result<()> {
    tracing::trace!("uploading initdb dir");

@@ -131,8 +137,10 @@ pub(crate) async fn upload_initdb_dir(
    let file = tokio_util::io::ReaderStream::with_capacity(initdb_tar_zst, super::BUFFER_SIZE);

    let remote_path = remote_initdb_archive_path(tenant_id, timeline_id);
-    storage
-        .upload_storage_object(file, size as usize, &remote_path)
-        .await
-        .with_context(|| format!("upload initdb dir for '{tenant_id} / {timeline_id}'"))
+    upload_cancellable(
+        cancel,
+        storage.upload_storage_object(file, size as usize, &remote_path),
+    )
+    .await
+    .with_context(|| format!("upload initdb dir for '{tenant_id} / {timeline_id}'"))
 }
--- a/pageserver/src/tenant/storage_layer/delta_layer.rs
+++ b/pageserver/src/tenant/storage_layer/delta_layer.rs
@@ -770,7 +770,7 @@ impl DeltaLayerInner {
            .build();

        // Ok, 'offsets' now contains the offsets of all the entries we need to read
-        let cursor = file.block_cursor();
+        let cursor = file.block_cursor_direct();
        let mut buf = Vec::new();
        for (entry_lsn, pos) in offsets {
            cursor
--- a/pageserver/src/tenant/storage_layer/image_layer.rs
+++ b/pageserver/src/tenant/storage_layer/image_layer.rs
@@ -427,7 +427,7 @@ impl ImageLayerInner {
            .await?
        {
            let blob = file
-                .block_cursor()
+                .block_cursor_direct()
                .read_blob(
                    offset,
                    &RequestContextBuilder::extend(ctx)
--- a/pageserver/src/tenant/storage_layer/layer.rs
+++ b/pageserver/src/tenant/storage_layer/layer.rs
@@ -259,8 +259,9 @@ impl Layer {

        layer
            .get_value_reconstruct_data(key, lsn_range, reconstruct_data, &self.0, ctx)
-            .instrument(tracing::info_span!("get_value_reconstruct_data", layer=%self))
+            .instrument(tracing::debug_span!("get_value_reconstruct_data", layer=%self))
            .await
+            .with_context(|| format!("get_value_reconstruct_data for layer {self}"))
    }

    /// Download the layer if evicted.
@@ -654,7 +655,6 @@ impl LayerInner {
    }

    /// Cancellation safe.
-    #[tracing::instrument(skip_all, fields(layer=%self))]
    async fn get_or_maybe_download(
        self: &Arc<Self>,
        allow_download: bool,
@@ -663,95 +663,101 @@ impl LayerInner {
        let mut init_permit = None;

        loop {
-            let download = move |permit| async move {
-                // disable any scheduled but not yet running eviction deletions for this
-                let next_version = 1 + self.version.fetch_add(1, Ordering::Relaxed);
+            let download = move |permit| {
+                async move {
+                    // disable any scheduled but not yet running eviction deletions for this
+                    let next_version = 1 + self.version.fetch_add(1, Ordering::Relaxed);

-                // count cancellations, which currently remain largely unexpected
-                let init_cancelled =
-                    scopeguard::guard((), |_| LAYER_IMPL_METRICS.inc_init_cancelled());
+                    // count cancellations, which currently remain largely unexpected
+                    let init_cancelled =
+                        scopeguard::guard((), |_| LAYER_IMPL_METRICS.inc_init_cancelled());

-                // no need to make the evict_and_wait wait for the actual download to complete
-                drop(self.status.send(Status::Downloaded));
+                    // no need to make the evict_and_wait wait for the actual download to complete
+                    drop(self.status.send(Status::Downloaded));

-                let timeline = self
-                    .timeline
-                    .upgrade()
-                    .ok_or_else(|| DownloadError::TimelineShutdown)?;
+                    let timeline = self
+                        .timeline
+                        .upgrade()
+                        .ok_or_else(|| DownloadError::TimelineShutdown)?;

-                // FIXME: grab a gate
+                    // FIXME: grab a gate

-                let can_ever_evict = timeline.remote_client.as_ref().is_some();
+                    let can_ever_evict = timeline.remote_client.as_ref().is_some();

-                // check if we really need to be downloaded; could have been already downloaded by a
-                // cancelled previous attempt.
-                let needs_download = self
-                    .needs_download()
-                    .await
-                    .map_err(DownloadError::PreStatFailed)?;
+                    // check if we really need to be downloaded; could have been already downloaded by a
+                    // cancelled previous attempt.
+                    let needs_download = self
+                        .needs_download()
+                        .await
+                        .map_err(DownloadError::PreStatFailed)?;

-                let permit = if let Some(reason) = needs_download {
-                    if let NeedsDownload::NotFile(ft) = reason {
-                        return Err(DownloadError::NotFile(ft));
+                    let permit = if let Some(reason) = needs_download {
+                        if let NeedsDownload::NotFile(ft) = reason {
+                            return Err(DownloadError::NotFile(ft));
+                        }
+
+                        // only reset this after we've decided we really need to download. otherwise it'd
+                        // be impossible to mark cancelled downloads for eviction, like one could imagine
+                        // we would like to do for prefetching which was not needed.
+                        self.wanted_evicted.store(false, Ordering::Release);
+
+                        if !can_ever_evict {
+                            return Err(DownloadError::NoRemoteStorage);
+                        }
+
+                        if let Some(ctx) = ctx {
+                            self.check_expected_download(ctx)?;
+                        }
+
+                        if !allow_download {
+                            // this does look weird, but for LayerInner the "downloading" means also changing
+                            // internal once related state ...
+                            return Err(DownloadError::DownloadRequired);
+                        }
+
+                        tracing::info!(%reason, "downloading on-demand");
+
+                        self.spawn_download_and_wait(timeline, permit).await?
+                    } else {
+                        // the file is present locally, probably by a previous but cancelled call to
+                        // get_or_maybe_download. alternatively we might be running without remote storage.
+                        LAYER_IMPL_METRICS.inc_init_needed_no_download();
+
+                        permit
+                    };
+
+                    let since_last_eviction =
+                        self.last_evicted_at.lock().unwrap().map(|ts| ts.elapsed());
+                    if let Some(since_last_eviction) = since_last_eviction {
+                        // FIXME: this will not always be recorded correctly until #6028 (the no
+                        // download needed branch above)
+                        LAYER_IMPL_METRICS.record_redownloaded_after(since_last_eviction);
                    }

-                    // only reset this after we've decided we really need to download. otherwise it'd
-                    // be impossible to mark cancelled downloads for eviction, like one could imagine
-                    // we would like to do for prefetching which was not needed.
-                    self.wanted_evicted.store(false, Ordering::Release);
+                    let res = Arc::new(DownloadedLayer {
+                        owner: Arc::downgrade(self),
+                        kind: tokio::sync::OnceCell::default(),
+                        version: next_version,
+                    });

-                    if !can_ever_evict {
-                        return Err(DownloadError::NoRemoteStorage);
+                    self.access_stats.record_residence_event(
+                        LayerResidenceStatus::Resident,
+                        LayerResidenceEventReason::ResidenceChange,
+                    );
+
+                    let waiters = self.inner.initializer_count();
+                    if waiters > 0 {
+                        tracing::info!(
+                            waiters,
+                            "completing the on-demand download for other tasks"
+                        );
                    }

-                    if let Some(ctx) = ctx {
-                        self.check_expected_download(ctx)?;
-                    }
+                    scopeguard::ScopeGuard::into_inner(init_cancelled);

-                    if !allow_download {
-                        // this does look weird, but for LayerInner the "downloading" means also changing
-                        // internal once related state ...
-                        return Err(DownloadError::DownloadRequired);
-                    }
-
-                    tracing::info!(%reason, "downloading on-demand");
-
-                    self.spawn_download_and_wait(timeline, permit).await?
-                } else {
-                    // the file is present locally, probably by a previous but cancelled call to
-                    // get_or_maybe_download. alternatively we might be running without remote storage.
-                    LAYER_IMPL_METRICS.inc_init_needed_no_download();
-
-                    permit
-                };
-
-                let since_last_eviction =
-                    self.last_evicted_at.lock().unwrap().map(|ts| ts.elapsed());
-                if let Some(since_last_eviction) = since_last_eviction {
-                    // FIXME: this will not always be recorded correctly until #6028 (the no
-                    // download needed branch above)
-                    LAYER_IMPL_METRICS.record_redownloaded_after(since_last_eviction);
+                    Ok((ResidentOrWantedEvicted::Resident(res), permit))
                }
-
-                let res = Arc::new(DownloadedLayer {
-                    owner: Arc::downgrade(self),
-                    kind: tokio::sync::OnceCell::default(),
-                    version: next_version,
-                });
-
-                self.access_stats.record_residence_event(
-                    LayerResidenceStatus::Resident,
-                    LayerResidenceEventReason::ResidenceChange,
-                );
-
-                let waiters = self.inner.initializer_count();
-                if waiters > 0 {
-                    tracing::info!(waiters, "completing the on-demand download for other tasks");
-                }
-
-                scopeguard::ScopeGuard::into_inner(init_cancelled);
-
-                Ok((ResidentOrWantedEvicted::Resident(res), permit))
+                .instrument(tracing::info_span!("get_or_maybe_download", layer=%self))
            };

            if let Some(init_permit) = init_permit.take() {
@@ -862,6 +868,7 @@ impl LayerInner {
                let result = client.download_layer_file(
                    &this.desc.filename(),
                    &this.metadata(),
+                    &crate::task_mgr::shutdown_token()
                )
                .await;

--- a/pageserver/src/tenant/timeline.rs
+++ b/pageserver/src/tenant/timeline.rs
@@ -14,6 +14,7 @@ use enumset::EnumSet;
 use fail::fail_point;
 use itertools::Itertools;
 use pageserver_api::{
+    key::is_rel_block_key,
    models::{
        DownloadRemoteLayersTaskInfo, DownloadRemoteLayersTaskSpawnRequest, LayerMapInfo,
        TimelineState,
@@ -508,21 +509,25 @@ impl Timeline {
        // The cached image can be returned directly if there is no WAL between the cached image
        // and requested LSN. The cached image can also be used to reduce the amount of WAL needed
        // for redo.
-        let cached_page_img = match self.lookup_cached_page(&key, lsn, ctx).await {
-            Some((cached_lsn, cached_img)) => {
-                match cached_lsn.cmp(&lsn) {
-                    Ordering::Less => {} // there might be WAL between cached_lsn and lsn, we need to check
-                    Ordering::Equal => {
-                        MATERIALIZED_PAGE_CACHE_HIT_DIRECT.inc();
-                        return Ok(cached_img); // exact LSN match, return the image
-                    }
-                    Ordering::Greater => {
-                        unreachable!("the returned lsn should never be after the requested lsn")
+        let cached_page_img = if is_rel_block_key(&key) && key.field6 != 0xffffffff {
+            None
+        } else {
+            match self.lookup_cached_page(&key, lsn, ctx).await {
+                Some((cached_lsn, cached_img)) => {
+                    match cached_lsn.cmp(&lsn) {
+                        Ordering::Less => {} // there might be WAL between cached_lsn and lsn, we need to check
+                        Ordering::Equal => {
+                            MATERIALIZED_PAGE_CACHE_HIT_DIRECT.inc();
+                            return Ok(cached_img); // exact LSN match, return the image
+                        }
+                        Ordering::Greater => {
+                            unreachable!("the returned lsn should never be after the requested lsn")
+                        }
                    }
+                    Some((cached_lsn, cached_img))
                }
-                Some((cached_lsn, cached_img))
+                None => None,
            }
-            None => None,
        };

        let mut reconstruct_state = ValueReconstructState {
@@ -1734,6 +1739,7 @@ impl Timeline {
                self.current_logical_size.current_size().accuracy(),
                logical_size::Accuracy::Exact,
            );
+            self.current_logical_size.initialized.add_permits(1);
            return;
        };

@@ -1779,6 +1785,11 @@ impl Timeline {
        cancel: CancellationToken,
        background_ctx: RequestContext,
    ) {
+        scopeguard::defer! {
+            // Irrespective of the outcome of this operation, we should unblock anyone waiting for it.
+            self.current_logical_size.initialized.add_permits(1);
+        }
+
        enum BackgroundCalculationError {
            Cancelled,
            Other(anyhow::Error),
@@ -3104,6 +3115,32 @@ impl Timeline {

        Ok(image_layers)
    }
+
+    /// Wait until the background initial logical size calculation is complete, or
+    /// this Timeline is shut down.  Calling this function will cause the initial
+    /// logical size calculation to skip waiting for the background jobs barrier.
+    pub(crate) async fn await_initial_logical_size(self: Arc<Self>) {
+        if let Some(await_bg_cancel) = self
+            .current_logical_size
+            .cancel_wait_for_background_loop_concurrency_limit_semaphore
+            .get()
+        {
+            await_bg_cancel.cancel();
+        } else {
+            // We should not wait if we were not able to explicitly instruct
+            // the logical size cancellation to skip the concurrency limit semaphore.
+            // TODO: this is an unexpected case.  We should restructure so that it
+            // can't happen.
+            tracing::info!(
+                "await_initial_logical_size: can't get semaphore cancel token, skipping"
+            );
+        }
+
+        tokio::select!(
+            _ = self.current_logical_size.initialized.acquire() => {},
+            _ = self.cancel.cancelled() => {}
+        )
+    }
 }

 #[derive(Default)]
@@ -4157,7 +4194,9 @@ impl Timeline {
                    Err(e) => return Err(PageReconstructError::from(e)),
                };

-                if img.len() == page_cache::PAGE_SZ {
+                if img.len() == page_cache::PAGE_SZ
+                    && !(is_rel_block_key(&key) && key.field6 != 0xffffffff)
+                {
                    let cache = page_cache::get();
                    if let Err(e) = cache
                        .memorize_materialized_page(
--- a/pageserver/src/tenant/timeline/logical_size.rs
+++ b/pageserver/src/tenant/timeline/logical_size.rs
@@ -34,6 +34,9 @@ pub(super) struct LogicalSize {
    pub(crate) cancel_wait_for_background_loop_concurrency_limit_semaphore:
        OnceCell<CancellationToken>,

+    /// Once the initial logical size is initialized, this is notified.
+    pub(crate) initialized: tokio::sync::Semaphore,
+
    /// Latest Lsn that has its size uncalculated, could be absent for freshly created timelines.
    pub initial_part_end: Option<Lsn>,

@@ -125,6 +128,7 @@ impl LogicalSize {
            initial_part_end: None,
            size_added_after_initial: AtomicI64::new(0),
            did_return_approximate_to_walreceiver: AtomicBool::new(false),
+            initialized: tokio::sync::Semaphore::new(0),
        }
    }

@@ -135,6 +139,7 @@ impl LogicalSize {
            initial_part_end: Some(compute_to),
            size_added_after_initial: AtomicI64::new(0),
            did_return_approximate_to_walreceiver: AtomicBool::new(false),
+            initialized: tokio::sync::Semaphore::new(0),
        }
    }

--- a/pgxn/neon/neon_utils.c
+++ b/pgxn/neon/neon_utils.c
@@ -1,3 +1,6 @@
+
+#include <sys/resource.h>
+
 #include "postgres.h"

 #include "access/timeline.h"
@@ -114,3 +117,25 @@ pq_sendint64_le(StringInfo buf, uint64 i)
 	memcpy(buf->data + buf->len, &i, sizeof(uint64));
 	buf->len += sizeof(uint64);
 }
+
+/*
+ * Disables core dump for the current process.
+ */
+void
+disable_core_dump()
+{
+	struct rlimit rlim;
+
+#ifdef WALPROPOSER_LIB			/* skip in simulation mode */
+	return;
+#endif
+
+	rlim.rlim_cur = 0;
+	rlim.rlim_max = 0;
+	if (setrlimit(RLIMIT_CORE, &rlim))
+	{
+		int			save_errno = errno;
+
+		fprintf(stderr, "WARNING: disable cores setrlimit failed: %s", strerror(save_errno));
+	}
+}
--- a/pgxn/neon/neon_utils.h
+++ b/pgxn/neon/neon_utils.h
@@ -8,5 +8,6 @@ uint32		pq_getmsgint32_le(StringInfo msg);
 uint64		pq_getmsgint64_le(StringInfo msg);
 void		pq_sendint32_le(StringInfo buf, uint32 i);
 void		pq_sendint64_le(StringInfo buf, uint64 i);
+extern void disable_core_dump();

 #endif							/* __NEON_UTILS_H__ */
--- a/pgxn/neon/walproposer.c
+++ b/pgxn/neon/walproposer.c
@@ -35,6 +35,8 @@
 *
 *-------------------------------------------------------------------------
 */
+#include <sys/resource.h>
+
 #include "postgres.h"
 #include "libpq/pqformat.h"
 #include "neon.h"
@@ -1069,6 +1071,12 @@ DetermineEpochStartLsn(WalProposer *wp)
 			if (!((dth->n_entries >= 1) && (dth->entries[dth->n_entries - 1].term ==
 											walprop_shared->mineLastElectedTerm)))
 			{
+				/*
+				 * Panic to restart PG as we need to retake basebackup.
+				 * However, don't dump core as this is kinda expected
+				 * scenario.
+				 */
+				disable_core_dump();
 				walprop_log(PANIC,
 							"collected propEpochStartLsn %X/%X, but basebackup LSN %X/%X",
 							LSN_FORMAT_ARGS(wp->propEpochStartLsn),
@@ -1445,7 +1453,12 @@ RecvAppendResponses(Safekeeper *sk)

 		if (sk->appendResponse.term > wp->propTerm)
 		{
-			/* Another compute with higher term is running. */
+			/*
+			 * Another compute with higher term is running. Panic to restart
+			 * PG as we likely need to retake basebackup. However, don't dump
+			 * core as this is kinda expected scenario.
+			 */
+			disable_core_dump();
 			walprop_log(PANIC, "WAL acceptor %s:%s with term " INT64_FORMAT " rejected our request, our term " INT64_FORMAT "",
 						sk->host, sk->port,
 						sk->appendResponse.term, wp->propTerm);
--- a/poetry.lock
+++ b/poetry.lock
@@ -2092,51 +2092,61 @@ files = [

 [[package]]
 name = "pyyaml"
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+version = "6.0.1"
 description = "YAML parser and emitter for Python"
 optional = false
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 ]

 [package.dependencies]
--- a/proxy/src/auth/backend.rs
+++ b/proxy/src/auth/backend.rs
@@ -9,9 +9,9 @@ use tokio_postgres::config::AuthKeys;
 use crate::auth::credentials::check_peer_addr_is_in_list;
 use crate::auth::validate_password_and_exchange;
 use crate::console::errors::GetAuthInfoError;
-use crate::console::provider::AuthInfo;
 use crate::console::AuthSecret;
-use crate::proxy::{handle_try_wake, retry_after, LatencyTimer};
+use crate::proxy::connect_compute::handle_try_wake;
+use crate::proxy::retry::retry_after;
 use crate::scram;
 use crate::stream::Stream;
 use crate::{
@@ -22,6 +22,7 @@ use crate::{
        provider::{CachedNodeInfo, ConsoleReqExtra},
        Api,
    },
+    metrics::LatencyTimer,
    stream, url,
 };
 use futures::TryFutureExt;
@@ -185,17 +186,13 @@ async fn auth_quirks(
    };

    info!("fetching user's authentication info");
-    // TODO(anna): this will slow down both "hacks" below; we probably need a cache.
-    let AuthInfo {
-        secret,
-        allowed_ips,
-    } = api.get_auth_info(extra, &info).await?;
+    let allowed_ips = api.get_allowed_ips(extra, &info).await?;

    // check allowed list
    if !check_peer_addr_is_in_list(&info.inner.peer_addr, &allowed_ips) {
        return Err(auth::AuthError::ip_address_not_allowed());
    }
-    let secret = secret.unwrap_or_else(|| {
+    let secret = api.get_role_secret(extra, &info).await?.unwrap_or_else(|| {
        // If we don't have an authentication secret, we mock one to
        // prevent malicious probing (possible due to missing protocol steps).
        // This mocked secret will never lead to successful authentication.
--- a/proxy/src/auth/backend/classic.rs
+++ b/proxy/src/auth/backend/classic.rs
@@ -4,7 +4,7 @@ use crate::{
    compute,
    config::AuthenticationConfig,
    console::AuthSecret,
-    proxy::LatencyTimer,
+    metrics::LatencyTimer,
    sasl,
    stream::{PqStream, Stream},
 };
--- a/proxy/src/auth/backend/hacks.rs
+++ b/proxy/src/auth/backend/hacks.rs
@@ -4,7 +4,7 @@ use super::{
 use crate::{
    auth::{self, AuthFlow},
    console::AuthSecret,
-    proxy::LatencyTimer,
+    metrics::LatencyTimer,
    sasl,
    stream::{self, Stream},
 };
--- a/proxy/src/auth/credentials.rs
+++ b/proxy/src/auth/credentials.rs
@@ -1,9 +1,8 @@
 //! User credentials used in authentication.

 use crate::{
-    auth::password_hack::parse_endpoint_param,
-    error::UserFacingError,
-    proxy::{neon_options_str, NUM_CONNECTION_ACCEPTED_BY_SNI},
+    auth::password_hack::parse_endpoint_param, error::UserFacingError,
+    metrics::NUM_CONNECTION_ACCEPTED_BY_SNI, proxy::neon_options_str,
 };
 use itertools::Itertools;
 use pq_proto::StartupMessageParams;
--- a/proxy/src/bin/proxy.rs
+++ b/proxy/src/bin/proxy.rs
@@ -6,6 +6,7 @@ use proxy::config::HttpConfig;
 use proxy::console;
 use proxy::console::provider::AllowedIpsCache;
 use proxy::console::provider::NodeInfoCache;
+use proxy::console::provider::RoleSecretCache;
 use proxy::http;
 use proxy::rate_limiter::EndpointRateLimiter;
 use proxy::rate_limiter::RateBucketInfo;
@@ -86,7 +87,7 @@ struct ProxyCliArgs {
    #[clap(long)]
    metric_collection_interval: Option<String>,
    /// cache for `wake_compute` api method (use `size=0` to disable)
-    #[clap(long, default_value = config::CacheOptions::DEFAULT_OPTIONS_NODE_INFO)]
+    #[clap(long, default_value = config::CacheOptions::CACHE_DEFAULT_OPTIONS)]
    wake_compute_cache: String,
    /// lock for `wake_compute` api method. example: "shards=32,permits=4,epoch=10m,timeout=1s". (use `permits=0` to disable).
    #[clap(long, default_value = config::WakeComputeLockOptions::DEFAULT_OPTIONS_WAKE_COMPUTE_LOCK)]
@@ -127,8 +128,11 @@ struct ProxyCliArgs {
    #[clap(flatten)]
    aimd_config: proxy::rate_limiter::AimdConfig,
    /// cache for `allowed_ips` (use `size=0` to disable)
-    #[clap(long, default_value = config::CacheOptions::DEFAULT_OPTIONS_NODE_INFO)]
+    #[clap(long, default_value = config::CacheOptions::CACHE_DEFAULT_OPTIONS)]
    allowed_ips_cache: String,
+    /// cache for `role_secret` (use `size=0` to disable)
+    #[clap(long, default_value = config::CacheOptions::CACHE_DEFAULT_OPTIONS)]
+    role_secret_cache: String,
    /// disable ip check for http requests. If it is too time consuming, it could be turned off.
    #[clap(long, default_value_t = false, value_parser = clap::builder::BoolishValueParser::new(), action = clap::ArgAction::Set)]
    disable_ip_check_for_http: bool,
@@ -266,9 +270,11 @@ fn build_config(args: &ProxyCliArgs) -> anyhow::Result<&'static ProxyConfig> {
        AuthBackend::Console => {
            let wake_compute_cache_config: CacheOptions = args.wake_compute_cache.parse()?;
            let allowed_ips_cache_config: CacheOptions = args.allowed_ips_cache.parse()?;
+            let role_secret_cache_config: CacheOptions = args.role_secret_cache.parse()?;

            info!("Using NodeInfoCache (wake_compute) with options={wake_compute_cache_config:?}");
            info!("Using AllowedIpsCache (wake_compute) with options={allowed_ips_cache_config:?}");
+            info!("Using RoleSecretCache (wake_compute) with options={role_secret_cache_config:?}");
            let caches = Box::leak(Box::new(console::caches::ApiCaches {
                node_info: NodeInfoCache::new(
                    "node_info_cache",
@@ -282,6 +288,12 @@ fn build_config(args: &ProxyCliArgs) -> anyhow::Result<&'static ProxyConfig> {
                    allowed_ips_cache_config.ttl,
                    false,
                ),
+                role_secret: RoleSecretCache::new(
+                    "role_secret_cache",
+                    role_secret_cache_config.size,
+                    role_secret_cache_config.ttl,
+                    false,
+                ),
            }));

            let config::WakeComputeLockOptions {
--- a/proxy/src/compute.rs
+++ b/proxy/src/compute.rs
@@ -1,9 +1,6 @@
 use crate::{
-    auth::parse_endpoint_param,
-    cancellation::CancelClosure,
-    console::errors::WakeComputeError,
-    error::UserFacingError,
-    proxy::{neon_option, NUM_DB_CONNECTIONS_GAUGE},
+    auth::parse_endpoint_param, cancellation::CancelClosure, console::errors::WakeComputeError,
+    error::UserFacingError, metrics::NUM_DB_CONNECTIONS_GAUGE, proxy::neon_option,
 };
 use futures::{FutureExt, TryFutureExt};
 use itertools::Itertools;
--- a/proxy/src/config.rs
+++ b/proxy/src/config.rs
@@ -33,8 +33,6 @@ pub struct TlsConfig {
    pub config: Arc<rustls::ServerConfig>,
    pub common_names: Option<HashSet<String>>,
    pub cert_resolver: Arc<CertResolver>,
-    pub handshake_timeout: Duration,
-    pub max_handshaking: usize,
 }

 pub struct HttpConfig {
@@ -100,8 +98,6 @@ pub fn configure_tls(
        config,
        common_names: Some(common_names),
        cert_resolver,
-        handshake_timeout: tls_listener::DEFAULT_HANDSHAKE_TIMEOUT,
-        max_handshaking: tls_listener::DEFAULT_MAX_HANDSHAKES,
    })
 }

@@ -314,10 +310,10 @@ pub struct CacheOptions {

 impl CacheOptions {
    /// Default options for [`crate::console::provider::NodeInfoCache`].
-    pub const DEFAULT_OPTIONS_NODE_INFO: &'static str = "size=4000,ttl=4m";
+    pub const CACHE_DEFAULT_OPTIONS: &'static str = "size=4000,ttl=4m";

    /// Parse cache options passed via cmdline.
-    /// Example: [`Self::DEFAULT_OPTIONS_NODE_INFO`].
+    /// Example: [`Self::CACHE_DEFAULT_OPTIONS`].
    fn parse(options: &str) -> anyhow::Result<Self> {
        let mut size = None;
        let mut ttl = None;
--- a/proxy/src/console/provider.rs
+++ b/proxy/src/console/provider.rs
@@ -10,6 +10,7 @@ use crate::{
 };
 use async_trait::async_trait;
 use dashmap::DashMap;
+use smol_str::SmolStr;
 use std::{sync::Arc, time::Duration};
 use tokio::{
    sync::{OwnedSemaphorePermit, Semaphore},
@@ -21,7 +22,7 @@ pub mod errors {
    use crate::{
        error::{io_error, UserFacingError},
        http,
-        proxy::ShouldRetry,
+        proxy::retry::ShouldRetry,
    };
    use thiserror::Error;

@@ -216,6 +217,7 @@ impl ConsoleReqExtra {
 }

 /// Auth secret which is managed by the cloud.
+#[derive(Clone)]
 pub enum AuthSecret {
    #[cfg(feature = "testing")]
    /// Md5 hash of user's password.
@@ -250,18 +252,19 @@ pub struct NodeInfo {

 pub type NodeInfoCache = TimedLru<Arc<str>, NodeInfo>;
 pub type CachedNodeInfo = timed_lru::Cached<&'static NodeInfoCache>;
-pub type AllowedIpsCache = TimedLru<Arc<str>, Arc<Vec<String>>>;
+pub type AllowedIpsCache = TimedLru<SmolStr, Arc<Vec<String>>>;
+pub type RoleSecretCache = TimedLru<(SmolStr, SmolStr), Option<AuthSecret>>;

 /// This will allocate per each call, but the http requests alone
 /// already require a few allocations, so it should be fine.
 #[async_trait]
 pub trait Api {
    /// Get the client's auth secret for authentication.
-    async fn get_auth_info(
+    async fn get_role_secret(
        &self,
        extra: &ConsoleReqExtra,
        creds: &ComputeUserInfo,
-    ) -> Result<AuthInfo, errors::GetAuthInfoError>;
+    ) -> Result<Option<AuthSecret>, errors::GetAuthInfoError>;

    async fn get_allowed_ips(
        &self,
@@ -282,7 +285,9 @@ pub struct ApiCaches {
    /// Cache for the `wake_compute` API method.
    pub node_info: NodeInfoCache,
    /// Cache for the `get_allowed_ips`. TODO(anna): use notifications listener instead.
-    pub allowed_ips: TimedLru<Arc<str>, Arc<Vec<String>>>,
+    pub allowed_ips: AllowedIpsCache,
+    /// Cache for the `get_role_secret`. TODO(anna): use notifications listener instead.
+    pub role_secret: RoleSecretCache,
 }

 /// Various caches for [`console`](super).
--- a/proxy/src/console/provider/mock.rs
+++ b/proxy/src/console/provider/mock.rs
@@ -142,12 +142,12 @@ async fn get_execute_postgres_query(
 #[async_trait]
 impl super::Api for Api {
    #[tracing::instrument(skip_all)]
-    async fn get_auth_info(
+    async fn get_role_secret(
        &self,
        _extra: &ConsoleReqExtra,
        creds: &ComputeUserInfo,
-    ) -> Result<AuthInfo, GetAuthInfoError> {
-        self.do_get_auth_info(creds).await
+    ) -> Result<Option<AuthSecret>, GetAuthInfoError> {
+        Ok(self.do_get_auth_info(creds).await?.secret)
    }

    async fn get_allowed_ips(
--- a/proxy/src/console/provider/neon.rs
+++ b/proxy/src/console/provider/neon.rs
@@ -5,7 +5,7 @@ use super::{
    errors::{ApiError, GetAuthInfoError, WakeComputeError},
    ApiCaches, ApiLocks, AuthInfo, AuthSecret, CachedNodeInfo, ConsoleReqExtra, NodeInfo,
 };
-use crate::proxy::{ALLOWED_IPS_BY_CACHE_OUTCOME, ALLOWED_IPS_NUMBER};
+use crate::metrics::{ALLOWED_IPS_BY_CACHE_OUTCOME, ALLOWED_IPS_NUMBER};
 use crate::{auth::backend::ComputeUserInfo, compute, http, scram};
 use async_trait::async_trait;
 use futures::TryFutureExt;
@@ -159,12 +159,24 @@ impl Api {
 #[async_trait]
 impl super::Api for Api {
    #[tracing::instrument(skip_all)]
-    async fn get_auth_info(
+    async fn get_role_secret(
        &self,
        extra: &ConsoleReqExtra,
        creds: &ComputeUserInfo,
-    ) -> Result<AuthInfo, GetAuthInfoError> {
-        self.do_get_auth_info(extra, creds).await
+    ) -> Result<Option<AuthSecret>, GetAuthInfoError> {
+        let ep = creds.endpoint.clone();
+        let user = creds.inner.user.clone();
+        if let Some(role_secret) = self.caches.role_secret.get(&(ep.clone(), user.clone())) {
+            return Ok(role_secret.clone());
+        }
+        let auth_info = self.do_get_auth_info(extra, creds).await?;
+        self.caches
+            .role_secret
+            .insert((ep.clone(), user), auth_info.secret.clone());
+        self.caches
+            .allowed_ips
+            .insert(ep, Arc::new(auth_info.allowed_ips));
+        Ok(auth_info.secret)
    }

    async fn get_allowed_ips(
@@ -172,8 +184,7 @@ impl super::Api for Api {
        extra: &ConsoleReqExtra,
        creds: &ComputeUserInfo,
    ) -> Result<Arc<Vec<String>>, GetAuthInfoError> {
-        let key: &str = &creds.endpoint;
-        if let Some(allowed_ips) = self.caches.allowed_ips.get(key) {
+        if let Some(allowed_ips) = self.caches.allowed_ips.get(&creds.endpoint) {
            ALLOWED_IPS_BY_CACHE_OUTCOME
                .with_label_values(&["hit"])
                .inc();
@@ -182,10 +193,14 @@ impl super::Api for Api {
        ALLOWED_IPS_BY_CACHE_OUTCOME
            .with_label_values(&["miss"])
            .inc();
-        let allowed_ips = Arc::new(self.do_get_auth_info(extra, creds).await?.allowed_ips);
+        let auth_info = self.do_get_auth_info(extra, creds).await?;
+        let allowed_ips = Arc::new(auth_info.allowed_ips);
+        let ep = creds.endpoint.clone();
+        let user = creds.inner.user.clone();
        self.caches
-            .allowed_ips
-            .insert(key.into(), allowed_ips.clone());
+            .role_secret
+            .insert((ep.clone(), user), auth_info.secret);
+        self.caches.allowed_ips.insert(ep, allowed_ips.clone());
        Ok(allowed_ips)
    }

--- a/proxy/src/http.rs
+++ b/proxy/src/http.rs
@@ -13,7 +13,7 @@ pub use reqwest_retry::{policies::ExponentialBackoff, RetryTransientMiddleware};
 use tokio::time::Instant;
 use tracing::trace;

-use crate::{proxy::CONSOLE_REQUEST_LATENCY, rate_limiter, url::ApiUrl};
+use crate::{metrics::CONSOLE_REQUEST_LATENCY, rate_limiter, url::ApiUrl};
 use reqwest_middleware::RequestBuilder;

 /// This is the preferred way to create new http clients,
--- a/proxy/src/lib.rs
+++ b/proxy/src/lib.rs
@@ -16,6 +16,7 @@ pub mod console;
 pub mod error;
 pub mod http;
 pub mod logging;
+pub mod metrics;
 pub mod parse;
 pub mod protocol2;
 pub mod proxy;
--- a/proxy/src/metrics.rs
+++ b/proxy/src/metrics.rs
@@ -0,0 +1,232 @@
+use ::metrics::{
+    exponential_buckets, register_int_counter_pair_vec, register_int_counter_vec,
+    IntCounterPairVec, IntCounterVec,
+};
+use prometheus::{
+    register_histogram, register_histogram_vec, register_int_gauge_vec, Histogram, HistogramVec,
+    IntGaugeVec,
+};
+
+use once_cell::sync::Lazy;
+use tokio::time;
+
+pub static NUM_DB_CONNECTIONS_GAUGE: Lazy<IntCounterPairVec> = Lazy::new(|| {
+    register_int_counter_pair_vec!(
+        "proxy_opened_db_connections_total",
+        "Number of opened connections to a database.",
+        "proxy_closed_db_connections_total",
+        "Number of closed connections to a database.",
+        &["protocol"],
+    )
+    .unwrap()
+});
+
+pub static NUM_CLIENT_CONNECTION_GAUGE: Lazy<IntCounterPairVec> = Lazy::new(|| {
+    register_int_counter_pair_vec!(
+        "proxy_opened_client_connections_total",
+        "Number of opened connections from a client.",
+        "proxy_closed_client_connections_total",
+        "Number of closed connections from a client.",
+        &["protocol"],
+    )
+    .unwrap()
+});
+
+pub static NUM_CONNECTION_REQUESTS_GAUGE: Lazy<IntCounterPairVec> = Lazy::new(|| {
+    register_int_counter_pair_vec!(
+        "proxy_accepted_connections_total",
+        "Number of client connections accepted.",
+        "proxy_closed_connections_total",
+        "Number of client connections closed.",
+        &["protocol"],
+    )
+    .unwrap()
+});
+
+pub static COMPUTE_CONNECTION_LATENCY: Lazy<HistogramVec> = Lazy::new(|| {
+    register_histogram_vec!(
+        "proxy_compute_connection_latency_seconds",
+        "Time it took for proxy to establish a connection to the compute endpoint",
+        // http/ws/tcp, true/false, true/false, success/failure
+        // 3 * 2 * 2 * 2 = 24 counters
+        &["protocol", "cache_miss", "pool_miss", "outcome"],
+        // largest bucket = 2^16 * 0.5ms = 32s
+        exponential_buckets(0.0005, 2.0, 16).unwrap(),
+    )
+    .unwrap()
+});
+
+pub static CONSOLE_REQUEST_LATENCY: Lazy<HistogramVec> = Lazy::new(|| {
+    register_histogram_vec!(
+        "proxy_console_request_latency",
+        "Time it took for proxy to establish a connection to the compute endpoint",
+        // proxy_wake_compute/proxy_get_role_info
+        &["request"],
+        // largest bucket = 2^16 * 0.2ms = 13s
+        exponential_buckets(0.0002, 2.0, 16).unwrap(),
+    )
+    .unwrap()
+});
+
+pub static ALLOWED_IPS_BY_CACHE_OUTCOME: Lazy<IntCounterVec> = Lazy::new(|| {
+    register_int_counter_vec!(
+        "proxy_allowed_ips_cache_misses",
+        "Number of cache hits/misses for allowed ips",
+        // hit/miss
+        &["outcome"],
+    )
+    .unwrap()
+});
+
+pub static RATE_LIMITER_ACQUIRE_LATENCY: Lazy<Histogram> = Lazy::new(|| {
+    register_histogram!(
+        "proxy_control_plane_token_acquire_seconds",
+        "Time it took for proxy to establish a connection to the compute endpoint",
+        // largest bucket = 3^16 * 0.05ms = 2.15s
+        exponential_buckets(0.00005, 3.0, 16).unwrap(),
+    )
+    .unwrap()
+});
+
+pub static RATE_LIMITER_LIMIT: Lazy<IntGaugeVec> = Lazy::new(|| {
+    register_int_gauge_vec!(
+        "semaphore_control_plane_limit",
+        "Current limit of the semaphore control plane",
+        &["limit"], // 2 counters
+    )
+    .unwrap()
+});
+
+pub static NUM_CONNECTION_ACCEPTED_BY_SNI: Lazy<IntCounterVec> = Lazy::new(|| {
+    register_int_counter_vec!(
+        "proxy_accepted_connections_by_sni",
+        "Number of connections (per sni).",
+        &["kind"],
+    )
+    .unwrap()
+});
+
+pub static ALLOWED_IPS_NUMBER: Lazy<Histogram> = Lazy::new(|| {
+    register_histogram!(
+        "proxy_allowed_ips_number",
+        "Number of allowed ips",
+        vec![0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 10.0, 20.0, 50.0, 100.0],
+    )
+    .unwrap()
+});
+
+pub struct LatencyTimer {
+    // time since the stopwatch was started
+    start: Option<time::Instant>,
+    // accumulated time on the stopwatch
+    accumulated: std::time::Duration,
+    // label data
+    protocol: &'static str,
+    cache_miss: bool,
+    pool_miss: bool,
+    outcome: &'static str,
+}
+
+pub struct LatencyTimerPause<'a> {
+    timer: &'a mut LatencyTimer,
+}
+
+impl LatencyTimer {
+    pub fn new(protocol: &'static str) -> Self {
+        Self {
+            start: Some(time::Instant::now()),
+            accumulated: std::time::Duration::ZERO,
+            protocol,
+            cache_miss: false,
+            // by default we don't do pooling
+            pool_miss: true,
+            // assume failed unless otherwise specified
+            outcome: "failed",
+        }
+    }
+
+    pub fn pause(&mut self) -> LatencyTimerPause<'_> {
+        // stop the stopwatch and record the time that we have accumulated
+        let start = self.start.take().expect("latency timer should be started");
+        self.accumulated += start.elapsed();
+        LatencyTimerPause { timer: self }
+    }
+
+    pub fn cache_miss(&mut self) {
+        self.cache_miss = true;
+    }
+
+    pub fn pool_hit(&mut self) {
+        self.pool_miss = false;
+    }
+
+    pub fn success(mut self) {
+        self.outcome = "success";
+    }
+}
+
+impl Drop for LatencyTimerPause<'_> {
+    fn drop(&mut self) {
+        // start the stopwatch again
+        self.timer.start = Some(time::Instant::now());
+    }
+}
+
+impl Drop for LatencyTimer {
+    fn drop(&mut self) {
+        let duration =
+            self.start.map(|start| start.elapsed()).unwrap_or_default() + self.accumulated;
+        COMPUTE_CONNECTION_LATENCY
+            .with_label_values(&[
+                self.protocol,
+                bool_to_str(self.cache_miss),
+                bool_to_str(self.pool_miss),
+                self.outcome,
+            ])
+            .observe(duration.as_secs_f64())
+    }
+}
+
+pub static NUM_CONNECTION_FAILURES: Lazy<IntCounterVec> = Lazy::new(|| {
+    register_int_counter_vec!(
+        "proxy_connection_failures_total",
+        "Number of connection failures (per kind).",
+        &["kind"],
+    )
+    .unwrap()
+});
+
+pub static NUM_WAKEUP_FAILURES: Lazy<IntCounterVec> = Lazy::new(|| {
+    register_int_counter_vec!(
+        "proxy_connection_failures_breakdown",
+        "Number of wake-up failures (per kind).",
+        &["retry", "kind"],
+    )
+    .unwrap()
+});
+
+pub static NUM_BYTES_PROXIED_PER_CLIENT_COUNTER: Lazy<IntCounterVec> = Lazy::new(|| {
+    register_int_counter_vec!(
+        "proxy_io_bytes_per_client",
+        "Number of bytes sent/received between client and backend.",
+        crate::console::messages::MetricsAuxInfo::TRAFFIC_LABELS,
+    )
+    .unwrap()
+});
+
+pub static NUM_BYTES_PROXIED_COUNTER: Lazy<IntCounterVec> = Lazy::new(|| {
+    register_int_counter_vec!(
+        "proxy_io_bytes",
+        "Number of bytes sent/received between all clients and backends.",
+        &["direction"],
+    )
+    .unwrap()
+});
+
+pub const fn bool_to_str(x: bool) -> &'static str {
+    if x {
+        "true"
+    } else {
+        "false"
+    }
+}
--- a/proxy/src/proxy.rs
+++ b/proxy/src/proxy.rs
@@ -1,265 +1,41 @@
 #[cfg(test)]
 mod tests;

+pub mod connect_compute;
+pub mod retry;
+
 use crate::{
    auth,
    cancellation::{self, CancelMap},
-    compute::{self, PostgresConnection},
+    compute,
    config::{AuthenticationConfig, ProxyConfig, TlsConfig},
-    console::{self, errors::WakeComputeError, messages::MetricsAuxInfo, Api},
-    http::StatusCode,
+    console::{self, messages::MetricsAuxInfo},
+    metrics::{
+        LatencyTimer, NUM_BYTES_PROXIED_COUNTER, NUM_BYTES_PROXIED_PER_CLIENT_COUNTER,
+        NUM_CLIENT_CONNECTION_GAUGE, NUM_CONNECTION_REQUESTS_GAUGE,
+    },
    protocol2::WithClientIp,
    rate_limiter::EndpointRateLimiter,
    stream::{PqStream, Stream},
    usage_metrics::{Ids, USAGE_METRICS},
 };
 use anyhow::{bail, Context};
-use async_trait::async_trait;
 use futures::TryFutureExt;
 use itertools::Itertools;
-use metrics::{
-    exponential_buckets, register_int_counter_pair_vec, register_int_counter_vec,
-    IntCounterPairVec, IntCounterVec,
-};
-use once_cell::sync::{Lazy, OnceCell};
+use once_cell::sync::OnceCell;
 use pq_proto::{BeMessage as Be, FeStartupPacket, StartupMessageParams};
-use prometheus::{
-    register_histogram, register_histogram_vec, register_int_gauge_vec, Histogram, HistogramVec,
-    IntGaugeVec,
-};
 use regex::Regex;
-use std::{error::Error, io, net::IpAddr, ops::ControlFlow, sync::Arc};
-use tokio::{
-    io::{AsyncRead, AsyncWrite, AsyncWriteExt},
-    time,
-};
+use std::{net::IpAddr, sync::Arc};
+use tokio::io::{AsyncRead, AsyncWrite, AsyncWriteExt};
 use tokio_util::sync::CancellationToken;
-use tracing::{error, info, info_span, warn, Instrument};
+use tracing::{error, info, info_span, Instrument};
 use utils::measured_stream::MeasuredStream;

-/// Number of times we should retry the `/proxy_wake_compute` http request.
-/// Retry duration is BASE_RETRY_WAIT_DURATION * RETRY_WAIT_EXPONENT_BASE ^ n, where n starts at 0
-pub const NUM_RETRIES_CONNECT: u32 = 16;
-const CONNECT_TIMEOUT: time::Duration = time::Duration::from_secs(2);
-const BASE_RETRY_WAIT_DURATION: time::Duration = time::Duration::from_millis(25);
-const RETRY_WAIT_EXPONENT_BASE: f64 = std::f64::consts::SQRT_2;
+use self::connect_compute::{connect_to_compute, TcpMechanism};

 const ERR_INSECURE_CONNECTION: &str = "connection is insecure (try using `sslmode=require`)";
 const ERR_PROTO_VIOLATION: &str = "protocol violation";

-pub static NUM_DB_CONNECTIONS_GAUGE: Lazy<IntCounterPairVec> = Lazy::new(|| {
-    register_int_counter_pair_vec!(
-        "proxy_opened_db_connections_total",
-        "Number of opened connections to a database.",
-        "proxy_closed_db_connections_total",
-        "Number of closed connections to a database.",
-        &["protocol"],
-    )
-    .unwrap()
-});
-
-pub static NUM_CLIENT_CONNECTION_GAUGE: Lazy<IntCounterPairVec> = Lazy::new(|| {
-    register_int_counter_pair_vec!(
-        "proxy_opened_client_connections_total",
-        "Number of opened connections from a client.",
-        "proxy_closed_client_connections_total",
-        "Number of closed connections from a client.",
-        &["protocol"],
-    )
-    .unwrap()
-});
-
-pub static NUM_CONNECTION_REQUESTS_GAUGE: Lazy<IntCounterPairVec> = Lazy::new(|| {
-    register_int_counter_pair_vec!(
-        "proxy_accepted_connections_total",
-        "Number of client connections accepted.",
-        "proxy_closed_connections_total",
-        "Number of client connections closed.",
-        &["protocol"],
-    )
-    .unwrap()
-});
-
-static COMPUTE_CONNECTION_LATENCY: Lazy<HistogramVec> = Lazy::new(|| {
-    register_histogram_vec!(
-        "proxy_compute_connection_latency_seconds",
-        "Time it took for proxy to establish a connection to the compute endpoint",
-        // http/ws/tcp, true/false, true/false, success/failure
-        // 3 * 2 * 2 * 2 = 24 counters
-        &["protocol", "cache_miss", "pool_miss", "outcome"],
-        // largest bucket = 2^16 * 0.5ms = 32s
-        exponential_buckets(0.0005, 2.0, 16).unwrap(),
-    )
-    .unwrap()
-});
-
-pub static CONSOLE_REQUEST_LATENCY: Lazy<HistogramVec> = Lazy::new(|| {
-    register_histogram_vec!(
-        "proxy_console_request_latency",
-        "Time it took for proxy to establish a connection to the compute endpoint",
-        // proxy_wake_compute/proxy_get_role_info
-        &["request"],
-        // largest bucket = 2^16 * 0.2ms = 13s
-        exponential_buckets(0.0002, 2.0, 16).unwrap(),
-    )
-    .unwrap()
-});
-
-pub static ALLOWED_IPS_BY_CACHE_OUTCOME: Lazy<IntCounterVec> = Lazy::new(|| {
-    register_int_counter_vec!(
-        "proxy_allowed_ips_cache_misses",
-        "Number of cache hits/misses for allowed ips",
-        // hit/miss
-        &["outcome"],
-    )
-    .unwrap()
-});
-
-pub static RATE_LIMITER_ACQUIRE_LATENCY: Lazy<Histogram> = Lazy::new(|| {
-    register_histogram!(
-        "proxy_control_plane_token_acquire_seconds",
-        "Time it took for proxy to establish a connection to the compute endpoint",
-        // largest bucket = 3^16 * 0.05ms = 2.15s
-        exponential_buckets(0.00005, 3.0, 16).unwrap(),
-    )
-    .unwrap()
-});
-
-pub static RATE_LIMITER_LIMIT: Lazy<IntGaugeVec> = Lazy::new(|| {
-    register_int_gauge_vec!(
-        "semaphore_control_plane_limit",
-        "Current limit of the semaphore control plane",
-        &["limit"], // 2 counters
-    )
-    .unwrap()
-});
-
-pub static NUM_CONNECTION_ACCEPTED_BY_SNI: Lazy<IntCounterVec> = Lazy::new(|| {
-    register_int_counter_vec!(
-        "proxy_accepted_connections_by_sni",
-        "Number of connections (per sni).",
-        &["kind"],
-    )
-    .unwrap()
-});
-
-pub static ALLOWED_IPS_NUMBER: Lazy<Histogram> = Lazy::new(|| {
-    register_histogram!(
-        "proxy_allowed_ips_number",
-        "Number of allowed ips",
-        vec![0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 10.0, 20.0, 50.0, 100.0],
-    )
-    .unwrap()
-});
-
-pub struct LatencyTimer {
-    // time since the stopwatch was started
-    start: Option<time::Instant>,
-    // accumulated time on the stopwatch
-    accumulated: std::time::Duration,
-    // label data
-    protocol: &'static str,
-    cache_miss: bool,
-    pool_miss: bool,
-    outcome: &'static str,
-}
-
-pub struct LatencyTimerPause<'a> {
-    timer: &'a mut LatencyTimer,
-}
-
-impl LatencyTimer {
-    pub fn new(protocol: &'static str) -> Self {
-        Self {
-            start: Some(time::Instant::now()),
-            accumulated: std::time::Duration::ZERO,
-            protocol,
-            cache_miss: false,
-            // by default we don't do pooling
-            pool_miss: true,
-            // assume failed unless otherwise specified
-            outcome: "failed",
-        }
-    }
-
-    pub fn pause(&mut self) -> LatencyTimerPause<'_> {
-        // stop the stopwatch and record the time that we have accumulated
-        let start = self.start.take().expect("latency timer should be started");
-        self.accumulated += start.elapsed();
-        LatencyTimerPause { timer: self }
-    }
-
-    pub fn cache_miss(&mut self) {
-        self.cache_miss = true;
-    }
-
-    pub fn pool_hit(&mut self) {
-        self.pool_miss = false;
-    }
-
-    pub fn success(mut self) {
-        self.outcome = "success";
-    }
-}
-
-impl Drop for LatencyTimerPause<'_> {
-    fn drop(&mut self) {
-        // start the stopwatch again
-        self.timer.start = Some(time::Instant::now());
-    }
-}
-
-impl Drop for LatencyTimer {
-    fn drop(&mut self) {
-        let duration =
-            self.start.map(|start| start.elapsed()).unwrap_or_default() + self.accumulated;
-        COMPUTE_CONNECTION_LATENCY
-            .with_label_values(&[
-                self.protocol,
-                bool_to_str(self.cache_miss),
-                bool_to_str(self.pool_miss),
-                self.outcome,
-            ])
-            .observe(duration.as_secs_f64())
-    }
-}
-
-static NUM_CONNECTION_FAILURES: Lazy<IntCounterVec> = Lazy::new(|| {
-    register_int_counter_vec!(
-        "proxy_connection_failures_total",
-        "Number of connection failures (per kind).",
-        &["kind"],
-    )
-    .unwrap()
-});
-
-static NUM_WAKEUP_FAILURES: Lazy<IntCounterVec> = Lazy::new(|| {
-    register_int_counter_vec!(
-        "proxy_connection_failures_breakdown",
-        "Number of wake-up failures (per kind).",
-        &["retry", "kind"],
-    )
-    .unwrap()
-});
-
-static NUM_BYTES_PROXIED_PER_CLIENT_COUNTER: Lazy<IntCounterVec> = Lazy::new(|| {
-    register_int_counter_vec!(
-        "proxy_io_bytes_per_client",
-        "Number of bytes sent/received between client and backend.",
-        crate::console::messages::MetricsAuxInfo::TRAFFIC_LABELS,
-    )
-    .unwrap()
-});
-
-static NUM_BYTES_PROXIED_COUNTER: Lazy<IntCounterVec> = Lazy::new(|| {
-    register_int_counter_vec!(
-        "proxy_io_bytes",
-        "Number of bytes sent/received between all clients and backends.",
-        &["direction"],
-    )
-    .unwrap()
-});
-
 pub async fn run_until_cancelled<F: std::future::Future>(
    f: F,
    cancellation_token: &CancellationToken,
@@ -467,14 +243,9 @@ async fn handshake<S: AsyncRead + AsyncWrite + Unpin>(
    // Client may try upgrading to each protocol only once
    let (mut tried_ssl, mut tried_gss) = (false, false);

-    let handshake_timeout = tls
-        .map(|tls| tls.handshake_timeout)
-        .unwrap_or(tls_listener::DEFAULT_HANDSHAKE_TIMEOUT);
-    let deadline = time::Instant::now() + handshake_timeout;
-
    let mut stream = PqStream::new(Stream::from_raw(stream));
    loop {
-        let msg = tokio::time::timeout_at(deadline, stream.read_startup_packet()).await??;
+        let msg = stream.read_startup_packet().await?;
        info!("received {msg:?}");

        use FeStartupPacket::*;
@@ -500,9 +271,7 @@ async fn handshake<S: AsyncRead + AsyncWrite + Unpin>(
                        if !read_buf.is_empty() {
                            bail!("data is sent before server replied with EncryptionResponse");
                        }
-                        let tls_stream =
-                            tokio::time::timeout_at(deadline, raw.upgrade(tls.to_server_config()))
-                                .await??;
+                        let tls_stream = raw.upgrade(tls.to_server_config()).await?;

                        let (_, tls_server_end_point) = tls
                            .cert_resolver
@@ -546,296 +315,6 @@ async fn handshake<S: AsyncRead + AsyncWrite + Unpin>(
    }
 }

-/// If we couldn't connect, a cached connection info might be to blame
-/// (e.g. the compute node's address might've changed at the wrong time).
-/// Invalidate the cache entry (if any) to prevent subsequent errors.
-#[tracing::instrument(name = "invalidate_cache", skip_all)]
-pub fn invalidate_cache(node_info: console::CachedNodeInfo) -> compute::ConnCfg {
-    let is_cached = node_info.cached();
-    if is_cached {
-        warn!("invalidating stalled compute node info cache entry");
-    }
-    let label = match is_cached {
-        true => "compute_cached",
-        false => "compute_uncached",
-    };
-    NUM_CONNECTION_FAILURES.with_label_values(&[label]).inc();
-
-    node_info.invalidate().config
-}
-
-/// Try to connect to the compute node once.
-#[tracing::instrument(name = "connect_once", fields(pid = tracing::field::Empty), skip_all)]
-async fn connect_to_compute_once(
-    node_info: &console::CachedNodeInfo,
-    timeout: time::Duration,
-    proto: &'static str,
-) -> Result<PostgresConnection, compute::ConnectionError> {
-    let allow_self_signed_compute = node_info.allow_self_signed_compute;
-
-    node_info
-        .config
-        .connect(allow_self_signed_compute, timeout, proto)
-        .await
-}
-
-#[async_trait]
-pub trait ConnectMechanism {
-    type Connection;
-    type ConnectError;
-    type Error: From<Self::ConnectError>;
-    async fn connect_once(
-        &self,
-        node_info: &console::CachedNodeInfo,
-        timeout: time::Duration,
-    ) -> Result<Self::Connection, Self::ConnectError>;
-
-    fn update_connect_config(&self, conf: &mut compute::ConnCfg);
-}
-
-pub struct TcpMechanism<'a> {
-    /// KV-dictionary with PostgreSQL connection params.
-    pub params: &'a StartupMessageParams,
-    pub proto: &'static str,
-}
-
-#[async_trait]
-impl ConnectMechanism for TcpMechanism<'_> {
-    type Connection = PostgresConnection;
-    type ConnectError = compute::ConnectionError;
-    type Error = compute::ConnectionError;
-
-    async fn connect_once(
-        &self,
-        node_info: &console::CachedNodeInfo,
-        timeout: time::Duration,
-    ) -> Result<PostgresConnection, Self::Error> {
-        connect_to_compute_once(node_info, timeout, self.proto).await
-    }
-
-    fn update_connect_config(&self, config: &mut compute::ConnCfg) {
-        config.set_startup_params(self.params);
-    }
-}
-
-const fn bool_to_str(x: bool) -> &'static str {
-    if x {
-        "true"
-    } else {
-        "false"
-    }
-}
-
-fn report_error(e: &WakeComputeError, retry: bool) {
-    use crate::console::errors::ApiError;
-    let retry = bool_to_str(retry);
-    let kind = match e {
-        WakeComputeError::BadComputeAddress(_) => "bad_compute_address",
-        WakeComputeError::ApiError(ApiError::Transport(_)) => "api_transport_error",
-        WakeComputeError::ApiError(ApiError::Console {
-            status: StatusCode::LOCKED,
-            ref text,
-        }) if text.contains("written data quota exceeded")
-            || text.contains("the limit for current plan reached") =>
-        {
-            "quota_exceeded"
-        }
-        WakeComputeError::ApiError(ApiError::Console {
-            status: StatusCode::LOCKED,
-            ..
-        }) => "api_console_locked",
-        WakeComputeError::ApiError(ApiError::Console {
-            status: StatusCode::BAD_REQUEST,
-            ..
-        }) => "api_console_bad_request",
-        WakeComputeError::ApiError(ApiError::Console { status, .. })
-            if status.is_server_error() =>
-        {
-            "api_console_other_server_error"
-        }
-        WakeComputeError::ApiError(ApiError::Console { .. }) => "api_console_other_error",
-        WakeComputeError::TimeoutError => "timeout_error",
-    };
-    NUM_WAKEUP_FAILURES.with_label_values(&[retry, kind]).inc();
-}
-
-/// Try to connect to the compute node, retrying if necessary.
-/// This function might update `node_info`, so we take it by `&mut`.
-#[tracing::instrument(skip_all)]
-pub async fn connect_to_compute<M: ConnectMechanism>(
-    mechanism: &M,
-    mut node_info: console::CachedNodeInfo,
-    extra: &console::ConsoleReqExtra,
-    creds: &auth::BackendType<'_, auth::backend::ComputeUserInfo>,
-    mut latency_timer: LatencyTimer,
-) -> Result<M::Connection, M::Error>
-where
-    M::ConnectError: ShouldRetry + std::fmt::Debug,
-    M::Error: From<WakeComputeError>,
-{
-    mechanism.update_connect_config(&mut node_info.config);
-
-    // try once
-    let (config, err) = match mechanism.connect_once(&node_info, CONNECT_TIMEOUT).await {
-        Ok(res) => {
-            latency_timer.success();
-            return Ok(res);
-        }
-        Err(e) => {
-            error!(error = ?e, "could not connect to compute node");
-            (invalidate_cache(node_info), e)
-        }
-    };
-
-    latency_timer.cache_miss();
-
-    let mut num_retries = 1;
-
-    // if we failed to connect, it's likely that the compute node was suspended, wake a new compute node
-    info!("compute node's state has likely changed; requesting a wake-up");
-    let node_info = loop {
-        let wake_res = match creds {
-            auth::BackendType::Console(api, creds) => api.wake_compute(extra, creds).await,
-            #[cfg(feature = "testing")]
-            auth::BackendType::Postgres(api, creds) => api.wake_compute(extra, creds).await,
-            // nothing to do?
-            auth::BackendType::Link(_) => return Err(err.into()),
-            // test backend
-            #[cfg(test)]
-            auth::BackendType::Test(x) => x.wake_compute(),
-        };
-
-        match handle_try_wake(wake_res, num_retries) {
-            Err(e) => {
-                error!(error = ?e, num_retries, retriable = false, "couldn't wake compute node");
-                report_error(&e, false);
-                return Err(e.into());
-            }
-            // failed to wake up but we can continue to retry
-            Ok(ControlFlow::Continue(e)) => {
-                report_error(&e, true);
-                warn!(error = ?e, num_retries, retriable = true, "couldn't wake compute node");
-            }
-            // successfully woke up a compute node and can break the wakeup loop
-            Ok(ControlFlow::Break(mut node_info)) => {
-                node_info.config.reuse_password(&config);
-                mechanism.update_connect_config(&mut node_info.config);
-                break node_info;
-            }
-        }
-
-        let wait_duration = retry_after(num_retries);
-        num_retries += 1;
-
-        time::sleep(wait_duration).await;
-    };
-
-    // now that we have a new node, try connect to it repeatedly.
-    // this can error for a few reasons, for instance:
-    // * DNS connection settings haven't quite propagated yet
-    info!("wake_compute success. attempting to connect");
-    loop {
-        match mechanism.connect_once(&node_info, CONNECT_TIMEOUT).await {
-            Ok(res) => {
-                latency_timer.success();
-                return Ok(res);
-            }
-            Err(e) => {
-                let retriable = e.should_retry(num_retries);
-                if !retriable {
-                    error!(error = ?e, num_retries, retriable, "couldn't connect to compute node");
-                    return Err(e.into());
-                }
-                warn!(error = ?e, num_retries, retriable, "couldn't connect to compute node");
-            }
-        }
-
-        let wait_duration = retry_after(num_retries);
-        num_retries += 1;
-
-        time::sleep(wait_duration).await;
-    }
-}
-
-/// Attempts to wake up the compute node.
-/// * Returns Ok(Continue(e)) if there was an error waking but retries are acceptable
-/// * Returns Ok(Break(node)) if the wakeup succeeded
-/// * Returns Err(e) if there was an error
-pub fn handle_try_wake(
-    result: Result<console::CachedNodeInfo, WakeComputeError>,
-    num_retries: u32,
-) -> Result<ControlFlow<console::CachedNodeInfo, WakeComputeError>, WakeComputeError> {
-    match result {
-        Err(err) => match &err {
-            WakeComputeError::ApiError(api) if api.should_retry(num_retries) => {
-                Ok(ControlFlow::Continue(err))
-            }
-            _ => Err(err),
-        },
-        // Ready to try again.
-        Ok(new) => Ok(ControlFlow::Break(new)),
-    }
-}
-
-pub trait ShouldRetry {
-    fn could_retry(&self) -> bool;
-    fn should_retry(&self, num_retries: u32) -> bool {
-        match self {
-            _ if num_retries >= NUM_RETRIES_CONNECT => false,
-            err => err.could_retry(),
-        }
-    }
-}
-
-impl ShouldRetry for io::Error {
-    fn could_retry(&self) -> bool {
-        use std::io::ErrorKind;
-        matches!(
-            self.kind(),
-            ErrorKind::ConnectionRefused | ErrorKind::AddrNotAvailable | ErrorKind::TimedOut
-        )
-    }
-}
-
-impl ShouldRetry for tokio_postgres::error::DbError {
-    fn could_retry(&self) -> bool {
-        use tokio_postgres::error::SqlState;
-        matches!(
-            self.code(),
-            &SqlState::CONNECTION_FAILURE
-                | &SqlState::CONNECTION_EXCEPTION
-                | &SqlState::CONNECTION_DOES_NOT_EXIST
-                | &SqlState::SQLCLIENT_UNABLE_TO_ESTABLISH_SQLCONNECTION,
-        )
-    }
-}
-
-impl ShouldRetry for tokio_postgres::Error {
-    fn could_retry(&self) -> bool {
-        if let Some(io_err) = self.source().and_then(|x| x.downcast_ref()) {
-            io::Error::could_retry(io_err)
-        } else if let Some(db_err) = self.source().and_then(|x| x.downcast_ref()) {
-            tokio_postgres::error::DbError::could_retry(db_err)
-        } else {
-            false
-        }
-    }
-}
-
-impl ShouldRetry for compute::ConnectionError {
-    fn could_retry(&self) -> bool {
-        match self {
-            compute::ConnectionError::Postgres(err) => err.could_retry(),
-            compute::ConnectionError::CouldNotConnect(err) => err.could_retry(),
-            _ => false,
-        }
-    }
-}
-
-pub fn retry_after(num_retries: u32) -> time::Duration {
-    BASE_RETRY_WAIT_DURATION.mul_f64(RETRY_WAIT_EXPONENT_BASE.powi((num_retries as i32) - 1))
-}
-
 /// Finish client connection initialization: confirm auth success, send params, etc.
 #[tracing::instrument(skip_all)]
 async fn prepare_client_connection(
--- a/proxy/src/proxy/connect_compute.rs
+++ b/proxy/src/proxy/connect_compute.rs
@@ -0,0 +1,238 @@
+use crate::{
+    auth,
+    compute::{self, PostgresConnection},
+    console::{self, errors::WakeComputeError, Api},
+    metrics::{bool_to_str, LatencyTimer, NUM_CONNECTION_FAILURES, NUM_WAKEUP_FAILURES},
+    proxy::retry::{retry_after, ShouldRetry},
+};
+use async_trait::async_trait;
+use hyper::StatusCode;
+use pq_proto::StartupMessageParams;
+use std::ops::ControlFlow;
+use tokio::time;
+use tracing::{error, info, warn};
+
+const CONNECT_TIMEOUT: time::Duration = time::Duration::from_secs(2);
+
+/// If we couldn't connect, a cached connection info might be to blame
+/// (e.g. the compute node's address might've changed at the wrong time).
+/// Invalidate the cache entry (if any) to prevent subsequent errors.
+#[tracing::instrument(name = "invalidate_cache", skip_all)]
+pub fn invalidate_cache(node_info: console::CachedNodeInfo) -> compute::ConnCfg {
+    let is_cached = node_info.cached();
+    if is_cached {
+        warn!("invalidating stalled compute node info cache entry");
+    }
+    let label = match is_cached {
+        true => "compute_cached",
+        false => "compute_uncached",
+    };
+    NUM_CONNECTION_FAILURES.with_label_values(&[label]).inc();
+
+    node_info.invalidate().config
+}
+
+/// Try to connect to the compute node once.
+#[tracing::instrument(name = "connect_once", fields(pid = tracing::field::Empty), skip_all)]
+async fn connect_to_compute_once(
+    node_info: &console::CachedNodeInfo,
+    timeout: time::Duration,
+    proto: &'static str,
+) -> Result<PostgresConnection, compute::ConnectionError> {
+    let allow_self_signed_compute = node_info.allow_self_signed_compute;
+
+    node_info
+        .config
+        .connect(allow_self_signed_compute, timeout, proto)
+        .await
+}
+
+#[async_trait]
+pub trait ConnectMechanism {
+    type Connection;
+    type ConnectError;
+    type Error: From<Self::ConnectError>;
+    async fn connect_once(
+        &self,
+        node_info: &console::CachedNodeInfo,
+        timeout: time::Duration,
+    ) -> Result<Self::Connection, Self::ConnectError>;
+
+    fn update_connect_config(&self, conf: &mut compute::ConnCfg);
+}
+
+pub struct TcpMechanism<'a> {
+    /// KV-dictionary with PostgreSQL connection params.
+    pub params: &'a StartupMessageParams,
+    pub proto: &'static str,
+}
+
+#[async_trait]
+impl ConnectMechanism for TcpMechanism<'_> {
+    type Connection = PostgresConnection;
+    type ConnectError = compute::ConnectionError;
+    type Error = compute::ConnectionError;
+
+    async fn connect_once(
+        &self,
+        node_info: &console::CachedNodeInfo,
+        timeout: time::Duration,
+    ) -> Result<PostgresConnection, Self::Error> {
+        connect_to_compute_once(node_info, timeout, self.proto).await
+    }
+
+    fn update_connect_config(&self, config: &mut compute::ConnCfg) {
+        config.set_startup_params(self.params);
+    }
+}
+
+fn report_error(e: &WakeComputeError, retry: bool) {
+    use crate::console::errors::ApiError;
+    let retry = bool_to_str(retry);
+    let kind = match e {
+        WakeComputeError::BadComputeAddress(_) => "bad_compute_address",
+        WakeComputeError::ApiError(ApiError::Transport(_)) => "api_transport_error",
+        WakeComputeError::ApiError(ApiError::Console {
+            status: StatusCode::LOCKED,
+            ref text,
+        }) if text.contains("written data quota exceeded")
+            || text.contains("the limit for current plan reached") =>
+        {
+            "quota_exceeded"
+        }
+        WakeComputeError::ApiError(ApiError::Console {
+            status: StatusCode::LOCKED,
+            ..
+        }) => "api_console_locked",
+        WakeComputeError::ApiError(ApiError::Console {
+            status: StatusCode::BAD_REQUEST,
+            ..
+        }) => "api_console_bad_request",
+        WakeComputeError::ApiError(ApiError::Console { status, .. })
+            if status.is_server_error() =>
+        {
+            "api_console_other_server_error"
+        }
+        WakeComputeError::ApiError(ApiError::Console { .. }) => "api_console_other_error",
+        WakeComputeError::TimeoutError => "timeout_error",
+    };
+    NUM_WAKEUP_FAILURES.with_label_values(&[retry, kind]).inc();
+}
+
+/// Try to connect to the compute node, retrying if necessary.
+/// This function might update `node_info`, so we take it by `&mut`.
+#[tracing::instrument(skip_all)]
+pub async fn connect_to_compute<M: ConnectMechanism>(
+    mechanism: &M,
+    mut node_info: console::CachedNodeInfo,
+    extra: &console::ConsoleReqExtra,
+    creds: &auth::BackendType<'_, auth::backend::ComputeUserInfo>,
+    mut latency_timer: LatencyTimer,
+) -> Result<M::Connection, M::Error>
+where
+    M::ConnectError: ShouldRetry + std::fmt::Debug,
+    M::Error: From<WakeComputeError>,
+{
+    mechanism.update_connect_config(&mut node_info.config);
+
+    // try once
+    let (config, err) = match mechanism.connect_once(&node_info, CONNECT_TIMEOUT).await {
+        Ok(res) => {
+            latency_timer.success();
+            return Ok(res);
+        }
+        Err(e) => {
+            error!(error = ?e, "could not connect to compute node");
+            (invalidate_cache(node_info), e)
+        }
+    };
+
+    latency_timer.cache_miss();
+
+    let mut num_retries = 1;
+
+    // if we failed to connect, it's likely that the compute node was suspended, wake a new compute node
+    info!("compute node's state has likely changed; requesting a wake-up");
+    let node_info = loop {
+        let wake_res = match creds {
+            auth::BackendType::Console(api, creds) => api.wake_compute(extra, creds).await,
+            #[cfg(feature = "testing")]
+            auth::BackendType::Postgres(api, creds) => api.wake_compute(extra, creds).await,
+            // nothing to do?
+            auth::BackendType::Link(_) => return Err(err.into()),
+            // test backend
+            #[cfg(test)]
+            auth::BackendType::Test(x) => x.wake_compute(),
+        };
+
+        match handle_try_wake(wake_res, num_retries) {
+            Err(e) => {
+                error!(error = ?e, num_retries, retriable = false, "couldn't wake compute node");
+                report_error(&e, false);
+                return Err(e.into());
+            }
+            // failed to wake up but we can continue to retry
+            Ok(ControlFlow::Continue(e)) => {
+                report_error(&e, true);
+                warn!(error = ?e, num_retries, retriable = true, "couldn't wake compute node");
+            }
+            // successfully woke up a compute node and can break the wakeup loop
+            Ok(ControlFlow::Break(mut node_info)) => {
+                node_info.config.reuse_password(&config);
+                mechanism.update_connect_config(&mut node_info.config);
+                break node_info;
+            }
+        }
+
+        let wait_duration = retry_after(num_retries);
+        num_retries += 1;
+
+        time::sleep(wait_duration).await;
+    };
+
+    // now that we have a new node, try connect to it repeatedly.
+    // this can error for a few reasons, for instance:
+    // * DNS connection settings haven't quite propagated yet
+    info!("wake_compute success. attempting to connect");
+    loop {
+        match mechanism.connect_once(&node_info, CONNECT_TIMEOUT).await {
+            Ok(res) => {
+                latency_timer.success();
+                return Ok(res);
+            }
+            Err(e) => {
+                let retriable = e.should_retry(num_retries);
+                if !retriable {
+                    error!(error = ?e, num_retries, retriable, "couldn't connect to compute node");
+                    return Err(e.into());
+                }
+                warn!(error = ?e, num_retries, retriable, "couldn't connect to compute node");
+            }
+        }
+
+        let wait_duration = retry_after(num_retries);
+        num_retries += 1;
+
+        time::sleep(wait_duration).await;
+    }
+}
+
+/// Attempts to wake up the compute node.
+/// * Returns Ok(Continue(e)) if there was an error waking but retries are acceptable
+/// * Returns Ok(Break(node)) if the wakeup succeeded
+/// * Returns Err(e) if there was an error
+pub fn handle_try_wake(
+    result: Result<console::CachedNodeInfo, WakeComputeError>,
+    num_retries: u32,
+) -> Result<ControlFlow<console::CachedNodeInfo, WakeComputeError>, WakeComputeError> {
+    match result {
+        Err(err) => match &err {
+            WakeComputeError::ApiError(api) if api.should_retry(num_retries) => {
+                Ok(ControlFlow::Continue(err))
+            }
+            _ => Err(err),
+        },
+        // Ready to try again.
+        Ok(new) => Ok(ControlFlow::Break(new)),
+    }
+}
--- a/proxy/src/proxy/retry.rs
+++ b/proxy/src/proxy/retry.rs
@@ -0,0 +1,68 @@
+use crate::compute;
+use std::{error::Error, io};
+use tokio::time;
+
+/// Number of times we should retry the `/proxy_wake_compute` http request.
+/// Retry duration is BASE_RETRY_WAIT_DURATION * RETRY_WAIT_EXPONENT_BASE ^ n, where n starts at 0
+pub const NUM_RETRIES_CONNECT: u32 = 16;
+const BASE_RETRY_WAIT_DURATION: time::Duration = time::Duration::from_millis(25);
+const RETRY_WAIT_EXPONENT_BASE: f64 = std::f64::consts::SQRT_2;
+
+pub trait ShouldRetry {
+    fn could_retry(&self) -> bool;
+    fn should_retry(&self, num_retries: u32) -> bool {
+        match self {
+            _ if num_retries >= NUM_RETRIES_CONNECT => false,
+            err => err.could_retry(),
+        }
+    }
+}
+
+impl ShouldRetry for io::Error {
+    fn could_retry(&self) -> bool {
+        use std::io::ErrorKind;
+        matches!(
+            self.kind(),
+            ErrorKind::ConnectionRefused | ErrorKind::AddrNotAvailable | ErrorKind::TimedOut
+        )
+    }
+}
+
+impl ShouldRetry for tokio_postgres::error::DbError {
+    fn could_retry(&self) -> bool {
+        use tokio_postgres::error::SqlState;
+        matches!(
+            self.code(),
+            &SqlState::CONNECTION_FAILURE
+                | &SqlState::CONNECTION_EXCEPTION
+                | &SqlState::CONNECTION_DOES_NOT_EXIST
+                | &SqlState::SQLCLIENT_UNABLE_TO_ESTABLISH_SQLCONNECTION,
+        )
+    }
+}
+
+impl ShouldRetry for tokio_postgres::Error {
+    fn could_retry(&self) -> bool {
+        if let Some(io_err) = self.source().and_then(|x| x.downcast_ref()) {
+            io::Error::could_retry(io_err)
+        } else if let Some(db_err) = self.source().and_then(|x| x.downcast_ref()) {
+            tokio_postgres::error::DbError::could_retry(db_err)
+        } else {
+            false
+        }
+    }
+}
+
+impl ShouldRetry for compute::ConnectionError {
+    fn could_retry(&self) -> bool {
+        match self {
+            compute::ConnectionError::Postgres(err) => err.could_retry(),
+            compute::ConnectionError::CouldNotConnect(err) => err.could_retry(),
+            _ => false,
+        }
+    }
+}
+
+pub fn retry_after(num_retries: u32) -> time::Duration {
+    BASE_RETRY_WAIT_DURATION.mul_f64(RETRY_WAIT_EXPONENT_BASE.powi((num_retries as i32) - 1))
+}
--- a/proxy/src/proxy/tests.rs
+++ b/proxy/src/proxy/tests.rs
@@ -2,10 +2,13 @@

 mod mitm;

+use super::connect_compute::ConnectMechanism;
+use super::retry::ShouldRetry;
 use super::*;
 use crate::auth::backend::{ComputeUserInfo, TestBackend};
 use crate::config::CertResolver;
 use crate::console::{CachedNodeInfo, NodeInfo};
+use crate::proxy::retry::{retry_after, NUM_RETRIES_CONNECT};
 use crate::{auth, http, sasl, scram};
 use async_trait::async_trait;
 use rstest::rstest;
@@ -85,8 +88,6 @@ fn generate_tls_config<'a>(
            config,
            common_names,
            cert_resolver: Arc::new(cert_resolver),
-            handshake_timeout: tls_listener::DEFAULT_HANDSHAKE_TIMEOUT,
-            max_handshaking: tls_listener::DEFAULT_MAX_HANDSHAKES,
        }
    };

@@ -425,7 +426,7 @@ impl ConnectMechanism for TestConnectMechanism {
    async fn connect_once(
        &self,
        _node_info: &console::CachedNodeInfo,
-        _timeout: time::Duration,
+        _timeout: std::time::Duration,
    ) -> Result<Self::Connection, Self::ConnectError> {
        let mut counter = self.counter.lock().unwrap();
        let action = self.sequence[*counter];
--- a/proxy/src/proxy/tests/mitm.rs
+++ b/proxy/src/proxy/tests/mitm.rs
@@ -120,7 +120,7 @@ where
 struct PgFrame;
 impl Decoder for PgFrame {
    type Item = Bytes;
-    type Error = io::Error;
+    type Error = std::io::Error;

    fn decode(&mut self, src: &mut BytesMut) -> Result<Option<Self::Item>, Self::Error> {
        if src.len() < 5 {
@@ -136,7 +136,7 @@ impl Decoder for PgFrame {
    }
 }
 impl Encoder<Bytes> for PgFrame {
-    type Error = io::Error;
+    type Error = std::io::Error;

    fn encode(&mut self, item: Bytes, dst: &mut BytesMut) -> Result<(), Self::Error> {
        dst.extend_from_slice(&item);
--- a/proxy/src/rate_limiter/limiter.rs
+++ b/proxy/src/rate_limiter/limiter.rs
@@ -393,10 +393,10 @@ impl Limiter {
            }
            new_limit
        };
-        crate::proxy::RATE_LIMITER_LIMIT
+        crate::metrics::RATE_LIMITER_LIMIT
            .with_label_values(&["expected"])
            .set(new_limit as i64);
-        crate::proxy::RATE_LIMITER_LIMIT
+        crate::metrics::RATE_LIMITER_LIMIT
            .with_label_values(&["actual"])
            .set(actual_limit as i64);
        self.limits.store(new_limit, Ordering::Release);
@@ -470,7 +470,7 @@ impl reqwest_middleware::Middleware for Limiter {
                )
            })?;
        info!(duration = ?start.elapsed(), "waiting for token to connect to the control plane");
-        crate::proxy::RATE_LIMITER_ACQUIRE_LATENCY.observe(start.elapsed().as_secs_f64());
+        crate::metrics::RATE_LIMITER_ACQUIRE_LATENCY.observe(start.elapsed().as_secs_f64());
        match next.run(req, extensions).await {
            Ok(response) => {
                self.release(token, Some(Outcome::from_reqwest_response(&response)))
--- a/proxy/src/scram/key.rs
+++ b/proxy/src/scram/key.rs
@@ -6,7 +6,7 @@ pub const SCRAM_KEY_LEN: usize = 32;
 /// One of the keys derived from the [password](super::password::SaltedPassword).
 /// We use the same structure for all keys, i.e.
 /// `ClientKey`, `StoredKey`, and `ServerKey`.
-#[derive(Default, PartialEq, Eq)]
+#[derive(Clone, Default, PartialEq, Eq)]
 #[repr(transparent)]
 pub struct ScramKey {
    bytes: [u8; SCRAM_KEY_LEN],
--- a/proxy/src/scram/secret.rs
+++ b/proxy/src/scram/secret.rs
@@ -5,6 +5,7 @@ use super::key::ScramKey;

 /// Server secret is produced from [password](super::password::SaltedPassword)
 /// and is used throughout the authentication process.
+#[derive(Clone)]
 pub struct ServerSecret {
    /// Number of iterations for `PBKDF2` function.
    pub iterations: u32,
--- a/proxy/src/serverless.rs
+++ b/proxy/src/serverless.rs
@@ -13,8 +13,8 @@ pub use reqwest_middleware::{ClientWithMiddleware, Error};
 pub use reqwest_retry::{policies::ExponentialBackoff, RetryTransientMiddleware};
 use tokio_util::task::TaskTracker;

+use crate::metrics::NUM_CLIENT_CONNECTION_GAUGE;
 use crate::protocol2::{ProxyProtocolAccept, WithClientIp};
-use crate::proxy::NUM_CLIENT_CONNECTION_GAUGE;
 use crate::rate_limiter::EndpointRateLimiter;
 use crate::{cancellation::CancelMap, config::ProxyConfig};
 use futures::StreamExt;
@@ -29,6 +29,7 @@ use hyper::{
 use std::net::IpAddr;
 use std::task::Poll;
 use std::{future::ready, sync::Arc};
+use tls_listener::TlsListener;
 use tokio::net::TcpListener;
 use tokio_util::sync::CancellationToken;
 use tracing::{error, info, info_span, warn, Instrument};
@@ -58,15 +59,14 @@ pub async fn task_main(
        }
    });

-    // let tls_config = config.tls_config.as_ref().map(|cfg| cfg.to_server_config());
-    let tls_config = match config.tls_config.as_ref() {
-        Some(config) => config,
+    let tls_config = config.tls_config.as_ref().map(|cfg| cfg.to_server_config());
+    let tls_acceptor: tokio_rustls::TlsAcceptor = match tls_config {
+        Some(config) => config.into(),
        None => {
            warn!("TLS config is missing, WebSocket Secure server will not be started");
            return Ok(());
        }
    };
-    let tls_acceptor: tokio_rustls::TlsAcceptor = tls_config.to_server_config().into();

    let mut addr_incoming = AddrIncoming::from_listener(ws_listener)?;
    let _ = addr_incoming.set_nodelay(true);
@@ -77,17 +77,14 @@ pub async fn task_main(
    let ws_connections = tokio_util::task::task_tracker::TaskTracker::new();
    ws_connections.close(); // allows `ws_connections.wait to complete`

-    let tls_listener = tls_listener::builder(tls_acceptor)
-        .handshake_timeout(tls_config.handshake_timeout)
-        .listen(addr_incoming)
-        .filter(|conn| {
-            if let Err(err) = conn {
-                error!("failed to accept TLS connection for websockets: {err:?}");
-                ready(false)
-            } else {
-                ready(true)
-            }
-        });
+    let tls_listener = TlsListener::new(tls_acceptor, addr_incoming).filter(|conn| {
+        if let Err(err) = conn {
+            error!("failed to accept TLS connection for websockets: {err:?}");
+            ready(false)
+        } else {
+            ready(true)
+        }
+    });

    let make_svc = hyper::service::make_service_fn(
        |stream: &tokio_rustls::server::TlsStream<WithClientIp<AddrStream>>| {
--- a/proxy/src/serverless/conn_pool.rs
+++ b/proxy/src/serverless/conn_pool.rs
@@ -24,13 +24,12 @@ use tokio_postgres::{AsyncMessage, ReadyForQueryStatus};
 use crate::{
    auth::{self, backend::ComputeUserInfo, check_peer_addr_is_in_list},
    console,
-    proxy::{neon_options, LatencyTimer, NUM_DB_CONNECTIONS_GAUGE},
+    metrics::{LatencyTimer, NUM_DB_CONNECTIONS_GAUGE},
+    proxy::{connect_compute::ConnectMechanism, neon_options},
    usage_metrics::{Ids, MetricCounter, USAGE_METRICS},
 };
 use crate::{compute, config};

-use crate::proxy::ConnectMechanism;
-
 use tracing::{error, warn, Span};
 use tracing::{info, info_span, Instrument};

@@ -432,7 +431,6 @@ async fn connect_to_compute(
        application_name: APP_NAME.to_string(),
        options: console_options,
    };
-    // TODO(anna): this is a bit hacky way, consider using console notification listener.
    if !config.disable_ip_check_for_http {
        let allowed_ips = backend.get_allowed_ips(&extra).await?;
        if !check_peer_addr_is_in_list(&peer_addr, &allowed_ips) {
@@ -444,7 +442,7 @@ async fn connect_to_compute(
        .await?
        .context("missing cache entry from wake_compute")?;

-    crate::proxy::connect_to_compute(
+    crate::proxy::connect_compute::connect_to_compute(
        &TokioMechanism {
            conn_id,
            conn_info,
--- a/proxy/src/serverless/sql_over_http.rs
+++ b/proxy/src/serverless/sql_over_http.rs
@@ -29,7 +29,7 @@ use utils::http::error::ApiError;
 use utils::http::json::json_response;

 use crate::config::HttpConfig;
-use crate::proxy::NUM_CONNECTION_REQUESTS_GAUGE;
+use crate::metrics::NUM_CONNECTION_REQUESTS_GAUGE;

 use super::conn_pool::ConnInfo;
 use super::conn_pool::GlobalConnPool;
--- a/s3_scrubber/Cargo.toml
+++ b/s3_scrubber/Cargo.toml
@@ -31,6 +31,7 @@ reqwest = { workspace = true, default-features = false, features = ["rustls-tls"
 aws-config = { workspace = true, default-features = false, features = ["rustls", "sso"] }

 pageserver = { path = "../pageserver" }
+pageserver_api = { path = "../libs/pageserver_api" }
 remote_storage = { path = "../libs/remote_storage" }

 tracing.workspace = true
--- a/s3_scrubber/src/checks.rs
+++ b/s3_scrubber/src/checks.rs
@@ -7,13 +7,12 @@ use utils::generation::Generation;

 use crate::cloud_admin_api::BranchData;
 use crate::metadata_stream::stream_listing;
-use crate::{download_object_with_retries, RootTarget};
+use crate::{download_object_with_retries, RootTarget, TenantShardTimelineId};
 use futures_util::{pin_mut, StreamExt};
 use pageserver::tenant::remote_timeline_client::parse_remote_index_path;
 use pageserver::tenant::storage_layer::LayerFileName;
 use pageserver::tenant::IndexPart;
 use remote_storage::RemotePath;
-use utils::id::TenantTimelineId;

 pub(crate) struct TimelineAnalysis {
    /// Anomalies detected
@@ -39,8 +38,8 @@ impl TimelineAnalysis {
    }
 }

-pub(crate) async fn branch_cleanup_and_check_errors(
-    id: &TenantTimelineId,
+pub(crate) fn branch_cleanup_and_check_errors(
+    id: &TenantShardTimelineId,
    s3_root: &RootTarget,
    s3_active_branch: Option<&BranchData>,
    console_branch: Option<BranchData>,
@@ -238,7 +237,7 @@ fn parse_layer_object_name(name: &str) -> Result<(LayerFileName, Generation), St

 pub(crate) async fn list_timeline_blobs(
    s3_client: &Client,
-    id: TenantTimelineId,
+    id: TenantShardTimelineId,
    s3_root: &RootTarget,
 ) -> anyhow::Result<S3TimelineBlobData> {
    let mut s3_layers = HashSet::new();
--- a/s3_scrubber/src/garbage.rs
+++ b/s3_scrubber/src/garbage.rs
@@ -10,15 +10,16 @@ use aws_sdk_s3::{
    Client,
 };
 use futures_util::{pin_mut, TryStreamExt};
+use pageserver_api::shard::TenantShardId;
 use serde::{Deserialize, Serialize};
 use tokio_stream::StreamExt;
-use utils::id::{TenantId, TenantTimelineId};
+use utils::id::TenantId;

 use crate::{
    cloud_admin_api::{CloudAdminApiClient, MaybeDeleted, ProjectData},
    init_remote,
    metadata_stream::{stream_listing, stream_tenant_timelines, stream_tenants},
-    BucketConfig, ConsoleConfig, NodeKind, RootTarget, TraversingDepth,
+    BucketConfig, ConsoleConfig, NodeKind, RootTarget, TenantShardTimelineId, TraversingDepth,
 };

 #[derive(Serialize, Deserialize, Debug)]
@@ -29,8 +30,8 @@ enum GarbageReason {

 #[derive(Serialize, Deserialize, Debug)]
 enum GarbageEntity {
-    Tenant(TenantId),
-    Timeline(TenantTimelineId),
+    Tenant(TenantShardId),
+    Timeline(TenantShardTimelineId),
 }

 #[derive(Serialize, Deserialize, Debug)]
@@ -142,6 +143,9 @@ async fn find_garbage_inner(
        console_projects.len()
    );

+    // TODO(sharding): batch calls into Console so that we only call once for each TenantId,
+    // rather than checking the same TenantId for multiple TenantShardId
+
    // Enumerate Tenants in S3, and check if each one exists in Console
    tracing::info!("Finding all tenants in bucket {}...", bucket_config.bucket);
    let tenants = stream_tenants(&s3_client, &target);
@@ -149,10 +153,10 @@ async fn find_garbage_inner(
        let api_client = cloud_admin_api_client.clone();
        let console_projects = &console_projects;
        async move {
-            match console_projects.get(&t) {
+            match console_projects.get(&t.tenant_id) {
                Some(project_data) => Ok((t, Some(project_data.clone()))),
                None => api_client
-                    .find_tenant_project(t)
+                    .find_tenant_project(t.tenant_id)
                    .await
                    .map_err(|e| anyhow::anyhow!(e))
                    .map(|r| (t, r)),
@@ -166,21 +170,21 @@ async fn find_garbage_inner(
    // checks if they are enabled by the `depth` parameter.
    pin_mut!(tenants_checked);
    let mut garbage = GarbageList::new(node_kind, bucket_config);
-    let mut active_tenants: Vec<TenantId> = vec![];
+    let mut active_tenants: Vec<TenantShardId> = vec![];
    let mut counter = 0;
    while let Some(result) = tenants_checked.next().await {
-        let (tenant_id, console_result) = result?;
+        let (tenant_shard_id, console_result) = result?;

        // Paranoia check
        if let Some(project) = &console_result {
-            assert!(project.tenant == tenant_id);
+            assert!(project.tenant == tenant_shard_id.tenant_id);
        }

-        if garbage.maybe_append(GarbageEntity::Tenant(tenant_id), console_result) {
-            tracing::debug!("Tenant {tenant_id} is garbage");
+        if garbage.maybe_append(GarbageEntity::Tenant(tenant_shard_id), console_result) {
+            tracing::debug!("Tenant {tenant_shard_id} is garbage");
        } else {
-            tracing::debug!("Tenant {tenant_id} is active");
-            active_tenants.push(tenant_id);
+            tracing::debug!("Tenant {tenant_shard_id} is active");
+            active_tenants.push(tenant_shard_id);
        }

        counter += 1;
@@ -266,13 +270,13 @@ impl std::fmt::Display for PurgeMode {
 pub async fn get_tenant_objects(
    s3_client: &Arc<Client>,
    target: RootTarget,
-    tenant_id: TenantId,
+    tenant_shard_id: TenantShardId,
 ) -> anyhow::Result<Vec<ObjectIdentifier>> {
-    tracing::debug!("Listing objects in tenant {tenant_id}");
+    tracing::debug!("Listing objects in tenant {tenant_shard_id}");
    // TODO: apply extra validation based on object modification time.  Don't purge
    // tenants where any timeline's index_part.json has been touched recently.

-    let mut tenant_root = target.tenant_root(&tenant_id);
+    let mut tenant_root = target.tenant_root(&tenant_shard_id);

    // Remove delimiter, so that object listing lists all keys in the prefix and not just
    // common prefixes.
@@ -285,7 +289,7 @@ pub async fn get_tenant_objects(
 pub async fn get_timeline_objects(
    s3_client: &Arc<Client>,
    target: RootTarget,
-    ttid: TenantTimelineId,
+    ttid: TenantShardTimelineId,
 ) -> anyhow::Result<Vec<ObjectIdentifier>> {
    tracing::debug!("Listing objects in timeline {ttid}");
    let mut timeline_root = target.timeline_root(&ttid);
--- a/s3_scrubber/src/lib.rs
+++ b/s3_scrubber/src/lib.rs
@@ -22,6 +22,7 @@ use aws_sdk_s3::{Client, Config};

 use clap::ValueEnum;
 use pageserver::tenant::TENANTS_SEGMENT_NAME;
+use pageserver_api::shard::TenantShardId;
 use reqwest::Url;
 use serde::{Deserialize, Serialize};
 use std::io::IsTerminal;
@@ -29,7 +30,7 @@ use tokio::io::AsyncReadExt;
 use tracing::error;
 use tracing_appender::non_blocking::WorkerGuard;
 use tracing_subscriber::{fmt, prelude::*, EnvFilter};
-use utils::id::{TenantId, TenantTimelineId};
+use utils::id::TimelineId;

 const MAX_RETRIES: usize = 20;
 const CLOUD_ADMIN_API_TOKEN_ENV_VAR: &str = "CLOUD_ADMIN_API_TOKEN";
@@ -44,6 +45,35 @@ pub struct S3Target {
    pub delimiter: String,
 }

+/// Convenience for referring to timelines within a particular shard: more ergonomic
+/// than using a 2-tuple.
+///
+/// This is the shard-aware equivalent of TenantTimelineId.  It's defined here rather
+/// than somewhere more broadly exposed, because this kind of thing is rarely needed
+/// in the pageserver, as all timeline objects existing in the scope of a particular
+/// tenant: the scrubber is different in that it handles collections of data referring to many
+/// TenantShardTimelineIds in on place.
+#[derive(Serialize, Deserialize, Debug, Clone, Copy, Hash, PartialEq, Eq)]
+pub struct TenantShardTimelineId {
+    tenant_shard_id: TenantShardId,
+    timeline_id: TimelineId,
+}
+
+impl TenantShardTimelineId {
+    fn new(tenant_shard_id: TenantShardId, timeline_id: TimelineId) -> Self {
+        Self {
+            tenant_shard_id,
+            timeline_id,
+        }
+    }
+}
+
+impl Display for TenantShardTimelineId {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}/{}", self.tenant_shard_id, self.timeline_id)
+    }
+}
+
 #[derive(clap::ValueEnum, Debug, Clone, Copy, PartialEq, Eq)]
 pub enum TraversingDepth {
    Tenant,
@@ -110,19 +140,19 @@ impl RootTarget {
        }
    }

-    pub fn tenant_root(&self, tenant_id: &TenantId) -> S3Target {
+    pub fn tenant_root(&self, tenant_id: &TenantShardId) -> S3Target {
        self.tenants_root().with_sub_segment(&tenant_id.to_string())
    }

-    pub fn timelines_root(&self, tenant_id: &TenantId) -> S3Target {
+    pub fn timelines_root(&self, tenant_id: &TenantShardId) -> S3Target {
        match self {
            Self::Pageserver(_) => self.tenant_root(tenant_id).with_sub_segment("timelines"),
            Self::Safekeeper(_) => self.tenant_root(tenant_id),
        }
    }

-    pub fn timeline_root(&self, id: &TenantTimelineId) -> S3Target {
-        self.timelines_root(&id.tenant_id)
+    pub fn timeline_root(&self, id: &TenantShardTimelineId) -> S3Target {
+        self.timelines_root(&id.tenant_shard_id)
            .with_sub_segment(&id.timeline_id.to_string())
    }

--- a/s3_scrubber/src/metadata_stream.rs
+++ b/s3_scrubber/src/metadata_stream.rs
@@ -3,14 +3,15 @@ use async_stream::{stream, try_stream};
 use aws_sdk_s3::{types::ObjectIdentifier, Client};
 use tokio_stream::Stream;

-use crate::{list_objects_with_retries, RootTarget, S3Target, TenantId};
-use utils::id::{TenantTimelineId, TimelineId};
+use crate::{list_objects_with_retries, RootTarget, S3Target, TenantShardTimelineId};
+use pageserver_api::shard::TenantShardId;
+use utils::id::TimelineId;

 /// Given an S3 bucket, output a stream of TenantIds discovered via ListObjectsv2
 pub fn stream_tenants<'a>(
    s3_client: &'a Client,
    target: &'a RootTarget,
-) -> impl Stream<Item = anyhow::Result<TenantId>> + 'a {
+) -> impl Stream<Item = anyhow::Result<TenantShardId>> + 'a {
    try_stream! {
        let mut continuation_token = None;
        let tenants_target = target.tenants_root();
@@ -44,14 +45,14 @@ pub fn stream_tenants<'a>(
    }
 }

-/// Given a TenantId, output a stream of the timelines within that tenant, discovered
+/// Given a TenantShardId, output a stream of the timelines within that tenant, discovered
 /// using ListObjectsv2.  The listing is done before the stream is built, so that this
 /// function can be used to generate concurrency on a stream using buffer_unordered.
 pub async fn stream_tenant_timelines<'a>(
    s3_client: &'a Client,
    target: &'a RootTarget,
-    tenant: TenantId,
-) -> anyhow::Result<impl Stream<Item = Result<TenantTimelineId, anyhow::Error>> + 'a> {
+    tenant: TenantShardId,
+) -> anyhow::Result<impl Stream<Item = Result<TenantShardTimelineId, anyhow::Error>> + 'a> {
    let mut timeline_ids: Vec<Result<TimelineId, anyhow::Error>> = Vec::new();
    let mut continuation_token = None;
    let timelines_target = target.timelines_root(&tenant);
@@ -98,7 +99,7 @@ pub async fn stream_tenant_timelines<'a>(
    Ok(stream! {
        for i in timeline_ids {
            let id = i?;
-            yield Ok(TenantTimelineId::new(tenant, id));
+            yield Ok(TenantShardTimelineId::new(tenant, id));
        }
    })
 }
--- a/s3_scrubber/src/scan_metadata.rs
+++ b/s3_scrubber/src/scan_metadata.rs
@@ -5,20 +5,19 @@ use crate::checks::{
    TimelineAnalysis,
 };
 use crate::metadata_stream::{stream_tenant_timelines, stream_tenants};
-use crate::{init_remote, BucketConfig, NodeKind, RootTarget};
+use crate::{init_remote, BucketConfig, NodeKind, RootTarget, TenantShardTimelineId};
 use aws_sdk_s3::Client;
 use futures_util::{pin_mut, StreamExt, TryStreamExt};
 use histogram::Histogram;
 use pageserver::tenant::IndexPart;
 use serde::Serialize;
-use utils::id::TenantTimelineId;

 #[derive(Serialize)]
 pub struct MetadataSummary {
    count: usize,
-    with_errors: HashSet<TenantTimelineId>,
-    with_warnings: HashSet<TenantTimelineId>,
-    with_garbage: HashSet<TenantTimelineId>,
+    with_errors: HashSet<TenantShardTimelineId>,
+    with_warnings: HashSet<TenantShardTimelineId>,
+    with_garbage: HashSet<TenantShardTimelineId>,
    indices_by_version: HashMap<usize, usize>,

    layer_count: MinMaxHisto,
@@ -132,7 +131,7 @@ impl MetadataSummary {
        }
    }

-    fn update_analysis(&mut self, id: &TenantTimelineId, analysis: &TimelineAnalysis) {
+    fn update_analysis(&mut self, id: &TenantShardTimelineId, analysis: &TimelineAnalysis) {
        if !analysis.errors.is_empty() {
            self.with_errors.insert(*id);
        }
@@ -199,8 +198,8 @@ pub async fn scan_metadata(bucket_config: BucketConfig) -> anyhow::Result<Metada
    async fn report_on_timeline(
        s3_client: &Client,
        target: &RootTarget,
-        ttid: TenantTimelineId,
-    ) -> anyhow::Result<(TenantTimelineId, S3TimelineBlobData)> {
+        ttid: TenantShardTimelineId,
+    ) -> anyhow::Result<(TenantShardTimelineId, S3TimelineBlobData)> {
        let data = list_timeline_blobs(s3_client, ttid, target).await?;
        Ok((ttid, data))
    }
@@ -213,8 +212,7 @@ pub async fn scan_metadata(bucket_config: BucketConfig) -> anyhow::Result<Metada
        let (ttid, data) = i?;
        summary.update_data(&data);

-        let analysis =
-            branch_cleanup_and_check_errors(&ttid, &target, None, None, Some(data)).await;
+        let analysis = branch_cleanup_and_check_errors(&ttid, &target, None, None, Some(data));

        summary.update_analysis(&ttid, &analysis);
    }
--- a/test_runner/fixtures/pageserver/allowed_errors.py
+++ b/test_runner/fixtures/pageserver/allowed_errors.py
@@ -79,6 +79,9 @@ DEFAULT_PAGESERVER_ALLOWED_ERRORS = (
    # AWS S3 may emit 500 errors for keys in a DeleteObjects response: we retry these
    # and it is not a failure of our code when it happens.
    ".*DeleteObjects.*We encountered an internal error. Please try again.*",
+    # During shutdown, DownloadError::Cancelled may be logged as an error.  Cleaning this
+    # up is tracked in https://github.com/neondatabase/neon/issues/6096
+    ".*Cancelled, shutting down.*",
 )


--- a/test_runner/regress/test_attach_tenant_config.py
+++ b/test_runner/regress/test_attach_tenant_config.py
@@ -52,7 +52,16 @@ def negative_env(neon_env_builder: NeonEnvBuilder) -> Generator[NegativeTests, N
        TenantId(t["id"]) for t in ps_http.tenant_list()
    ], "tenant should not be attached after negative test"

-    env.pageserver.allowed_errors.append(".*Error processing HTTP request: Bad request")
+    env.pageserver.allowed_errors.extend(
+        [
+            # This fixture detaches the tenant, and tests using it will tend to re-attach it
+            # shortly after. There may be un-processed deletion_queue validations from the
+            # initial attachment
+            ".*Dropped remote consistent LSN updates.*",
+            # This fixture is for tests that will intentionally generate 400 responses
+            ".*Error processing HTTP request: Bad request",
+        ]
+    )

    def log_contains_bad_request():
        env.pageserver.log_contains(".*Error processing HTTP request: Bad request")
--- a/test_runner/regress/test_broken_timeline.py
+++ b/test_runner/regress/test_broken_timeline.py
@@ -20,7 +20,7 @@ def test_local_corruption(neon_env_builder: NeonEnvBuilder):

    env.pageserver.allowed_errors.extend(
        [
-            ".*layer loading failed:.*",
+            ".*get_value_reconstruct_data for layer .*",
            ".*could not find data for key.*",
            ".*is not active. Current state: Broken.*",
            ".*will not become active. Current state: Broken.*",
@@ -83,7 +83,7 @@ def test_local_corruption(neon_env_builder: NeonEnvBuilder):
    # (We don't check layer file contents on startup, when loading the timeline)
    #
    # This will change when we implement checksums for layers
-    with pytest.raises(Exception, match="layer loading failed:") as err:
+    with pytest.raises(Exception, match="get_value_reconstruct_data for layer ") as err:
        pg2.start()
    log.info(
        f"As expected, compute startup failed for timeline {tenant2}/{timeline2} with corrupt layers: {err}"
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
John Spray	6e53637b06	neon_local: pin pageservers and endpoints	2024-01-03 16:14:58 +00:00
John Spray	45bd85c372	pageserver: skip the blk range check: this is slow (reads relsize page) if queries aren't hitting latest=true	2023-12-20 20:06:56 +00:00
John Spray	403aff42d7	timeline: skip materialized page cache for relation blocks	2023-12-20 20:06:46 +00:00
John Spray	fa113f8d40	page_cache: don't use a histogram (too expensive)	2023-12-20 20:05:06 +00:00
John Spray	8ec1b57a2c	pagebench: hack around bug	2023-12-20 20:03:23 +00:00
John Spray	a8ec7d7ad8	pageserver: prototype of skipping page cache for non-index block reads	2023-12-20 19:18:26 +00:00
Christian Schwarz	5f7e821a62	make CI happy	2023-12-20 15:53:21 +00:00
Christian Schwarz	c417a23dd0	pagebench: factor out the concept of thread local stats	2023-12-18 18:32:22 +00:00
Christian Schwarz	20e5e9dd16	pagebench: finish trigger initial logical size calculation benchmark	2023-12-18 18:32:22 +00:00
Christian Schwarz	24c72db5ff	pagebench: centralize target discovery	2023-12-18 18:32:22 +00:00
Christian Schwarz	6aee8511f7	pagebench: getpage: WIP: when auto-discovering timelines, add ability to limit	2023-12-18 18:32:22 +00:00
Christian Schwarz	ad2091bdd0	pagebench: WIP: command to trigger initial logical size calculation	2023-12-18 18:32:21 +00:00
Christian Schwarz	573d4752e6	pagebench: add a 'getpage@lsn' benchmark	2023-12-18 18:32:21 +00:00
Christian Schwarz	136bec6014	pagebench: add a 'basebackup' benchmark	2023-12-18 18:32:21 +00:00
Christian Schwarz	0f8b4faa50	pagebench: scaffold	2023-12-18 18:32:21 +00:00
Christian Schwarz	5b42949531	Merge branch 'main' into problame/benchmarking/pr/timeline-ids-in-tenant-details	2023-12-18 19:22:19 +01:00
Christian Schwarz	1f9a7d1cd0	add a Rust client for Pageserver page_service (#6128 ) Part of getpage@lsn benchmark epic: https://github.com/neondatabase/neon/issues/5771 Stacked atop https://github.com/neondatabase/neon/pull/6145	2023-12-18 18:17:19 +00:00
John Spray	4ea4812ab2	tests: update python dependencies (#6164 ) ## Problem Existing dependencies didn't work on Fedora 39 (python 3.12) ## Summary of changes - Update pyyaml 6.0 -> 6.0.1 - Update yarl 1.8.2->1.9.4 - Update the `dnf install` line in README to include dependencies of python packages (unrelated to upgrades, just noticed absences while doing fresh pysync run)	2023-12-18 15:47:09 +00:00
Christian Schwarz	4a6dfb0ccb	include timeline ids in tenant details response	2023-12-18 15:12:48 +00:00
Anna Khanova	00d90ce76a	Added cache for get role secret (#6165 ) ## Problem Currently if we are getting many consecutive connections to the same user/ep we will send a lot of traffic to the console. ## Summary of changes Cache with ttl=4min proxy_get_role_secret response. Note: this is the temporary hack, notifier listener is WIP.	2023-12-18 16:04:47 +01:00
John Khvatov	33cb9a68f7	pageserver: Reduce tracing overhead in timeline::get (#6115 ) ## Problem Compaction process (specifically the image layer reconstructions part) is lagging behind wal ingest (at speed ~10-15MB/s) for medium-sized tenants (30-50GB). CPU profile shows that significant amount of time (see flamegraph) is being spent in `tracing::span::Span::new`. mainline (commit: `0ba4cae491`): ![reconstruct-mainline-0ba4cae491c2](https://github.com/neondatabase/neon/assets/289788/ebfd262e-5c97-4858-80c7-664a1dbcc59d) ## Summary of changes By lowering the tracing level in get_value_reconstruct_data and get_or_maybe_download from info to debug, we can reduce the overhead of span creation in prod environments. On my system, this sped up the image reconstruction process by 60% (from 14500 to 23160 page reconstruction per sec) pr: ![reconstruct-opt-2](https://github.com/neondatabase/neon/assets/289788/563a159b-8f2f-4300-b0a1-6cd66e7df769) `create_image_layers()` (it's 1 CPU bound here) mainline vs pr: ![image](https://github.com/neondatabase/neon/assets/289788/a981e3cb-6df9-4882-8a94-95e99c35aa83)	2023-12-18 13:33:23 +00:00
Conrad Ludgate	17bde7eda5	proxy refactor large files (#6153 ) ## Problem The `src/proxy.rs` file is far too large ## Summary of changes Creates 3 new files: ``` src/metrics.rs src/proxy/retry.rs src/proxy/connect_compute.rs ```	2023-12-18 10:59:49 +00:00
John Spray	dbdb1d21f2	pageserver: on-demand activation cleanups (#6157 ) ## Problem #6112 added some logs and metrics: clean these up a bit: - Avoid counting startup completions for tenants launched after startup - exclude no-op cases from timing histograms - remove a rogue log messages	2023-12-18 10:29:19 +00:00
Arseny Sher	e1935f42a1	Don't generate core dump when walproposer intentionally panics. Walproposer sometimes intentionally PANICs when its term is defeated as the basebackup is likely spoiled by that time. We don't want core dumped in this case.	2023-12-18 11:03:34 +04:00
Alexander Bayandin	9bdc25f0af	Revert "CI: build build-tools image" (#6156 ) It turns out the issue with skipped jobs is not so trivial (because Github checks jobs transitively), a possible workaround with `if: always() && contains(fromJSON('["success", "skipped"]'), needs.build-buildtools-image.result)` will tangle the workflow really bad. We'll need to come up with a better solution. To unblock the main I'm going to revert https://github.com/neondatabase/neon/pull/6082.	2023-12-16 12:32:00 +00:00
Christian Schwarz	47873470db	pageserver: add method to dump keyspace in mgmt api client (#6145 ) Part of getpage@lsn benchmark epic: https://github.com/neondatabase/neon/issues/5771	2023-12-16 10:52:48 +00:00
Abhijeet Patil	8619e6295a	CI: build build-tools image (#6082 ) ## Currently our build docker file is located in the build repo it makes sense to have it as a part of our neon repo ## Summary of changes We had the docker file that we use to build our binary and other tools resided in the build repo It made sense to bring the docker file to its repo where it has been used So that the contributors can also view it and amend if required It will reduce the maintenance. Docker file changes and code changes can be accommodated in same PR Also, building the image and pushing it to ECR is abstracted in a reusable workflow. Ideal is to use that for any other jobs too ## Checklist before requesting a review - [x] Moved the docker file used to build the binary from the build repo to the neon repo - [x] adding gh workflow to build and push the image - [x] adding gh workflow to tag the pushed image - [x] update readMe file --------- Co-authored-by: Abhijeet Patil <abhijeet@neon.tech> Co-authored-by: Alexander Bayandin <alexander@neon.tech>	2023-12-16 10:33:52 +00:00
Conrad Ludgate	83811491da	update zerocopy (#6148 ) ## Problem https://github.com/neondatabase/neon/security/dependabot/48 ``` $ cargo tree -i zerocopy zerocopy v0.7.3 └── ahash v0.8.5 └── hashbrown v0.13.2 ``` ahash doesn't use the affected APIs we we are not vulnerable but best to update to silence the alert anyway ## Summary of changes ``` $ cargo update -p zerocopy --precise 0.7.31 Updating crates.io index Updating syn v2.0.28 -> v2.0.32 Updating zerocopy v0.7.3 -> v0.7.31 Updating zerocopy-derive v0.7.3 -> v0.7.31 ```	2023-12-16 09:06:00 +00:00
John Spray	d066dad84b	pageserver: prioritize activation of tenants with client requests (#6112 ) ## Problem During startup, a client request might have to wait a long time while the system is busy initializing all the attached tenants, even though most of the attached tenants probably don't have any client requests to service, and could wait a bit. ## Summary of changes - Add a semaphore to limit how many Tenant::spawn()s may concurrently do I/O to attach their tenant (i.e. read indices from remote storage, scan local layer files, etc). - Add Tenant::activate_now, a hook for kicking a tenant in its spawn() method to skip waiting for the warmup semaphore - For tenants that attached via warmup semaphore units, wait for logical size calculation to complete before dropping the warmup units - Set Tenant::activate_now in `get_active_tenant_with_timeout` (the page service's path for getting a reference to a tenant). - Wait for tenant activation in HTTP handlers for timeline creation and deletion: like page service requests, these require an active tenant and should prioritize activation if called.	2023-12-15 20:37:47 +00:00
John Spray	56f7d55ba7	pageserver: basic cancel/timeout for remote storage operations (#6097 ) ## Problem Various places in remote storage were not subject to a timeout (thereby stuck TCP connections could hold things up), and did not respect a cancellation token (so things like timeline deletion or tenant detach would have to wait arbitrarily long). ## Summary of changes - Add download_cancellable and upload_cancellable helpers, and use them in all the places we wait for remote storage operations (with the exception of initdb downloads, where it would not have been safe). - Add a cancellation token arg to `download_retry`. - Use cancellation token args in various places that were missing one per #5066 Closes: #5066 Why is this only "basic" handling? - Doesn't express difference between shutdown and errors in return types, to avoid refactoring all the places that use an anyhow::Error (these should all eventually return a more structured error type) - Implements timeouts on top of remote storage, rather than within it: this means that operations hitting their timeout will lose their semaphore permit and thereby go to the back of the queue for their retry. - Doing a nicer job is tracked in https://github.com/neondatabase/neon/issues/6096	2023-12-15 17:43:02 +00:00
Christian Schwarz	1a9854bfb7	add a Rust client for Pageserver management API (#6127 ) Part of getpage@lsn benchmark epic: https://github.com/neondatabase/neon/issues/5771 This PR moves the control plane's spread-all-over-the-place client for the pageserver management API into a separate module within the pageserver crate. I need that client to be async in my benchmarking work, so, this PR switches to the async version of `reqwest`. That is also the right direction generally IMO. The switch to async in turn mandated converting most of the `control_plane/` code to async. Note that some of the client methods should be taking `TenantShardId` instead of `TenantId`, but, none of the callers seem to be sharding-aware. Leaving that for another time: https://github.com/neondatabase/neon/issues/6154	2023-12-15 18:33:45 +01:00
John Spray	de1a9c6e3b	s3_scrubber: basic support for sharding (#6119 ) This doesn't make the scrubber smart enough to understand that many shards are part of the same tenants, but it makes it understand paths well enough to scrub the individual shards without thinking they're malformed. This is a prerequisite to being able to run tests with sharding enabled. Related: #5929	2023-12-15 15:48:55 +00:00
Arseny Sher	e62569a878	A few comments on rust walproposer build.	2023-12-15 19:31:51 +04:00
John Spray	bd1cb1b217	tests: update allow list for `negative_env` (#6144 ) Tests attaching the tenant immediately after the fixture detaches it could result in LSN updates failing validation e.g. https://neon-github-public-dev.s3.amazonaws.com/reports/pr-6142/7211196140/index.html#suites/7745dadbd815ab87f5798aa881796f47/32b12ccc0b01b122	2023-12-15 15:08:28 +00:00