diff --git a/pageserver/src/lib.rs b/pageserver/src/lib.rs
index 2a0f0b50e8..eff9b54897 100644
--- a/pageserver/src/lib.rs
+++ b/pageserver/src/lib.rs
@@ -32,7 +32,7 @@ pub mod defaults {
     // FIXME: This current value is very low. I would imagine something like 1 GB or 10 GB
     // would be more appropriate. But a low value forces the code to be exercised more,
     // which is good for now to trigger bugs.
-    pub const DEFAULT_CHECKPOINT_DISTANCE: u64 = 64 * 1024 * 1024;
+    pub const DEFAULT_CHECKPOINT_DISTANCE: u64 = 256 * 1024 * 1024;
     pub const DEFAULT_CHECKPOINT_PERIOD: Duration = Duration::from_secs(1);
 
     pub const DEFAULT_GC_HORIZON: u64 = 64 * 1024 * 1024;
diff --git a/vendor/postgres b/vendor/postgres
index 09a69d5e73..53abd9296e 160000
--- a/vendor/postgres
+++ b/vendor/postgres
@@ -1 +1 @@
-Subproject commit 09a69d5e731ffb712de5e3d60ff78c9907183409
+Subproject commit 53abd9296e62cc894618bdcf46f55dc044708d9c