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0ed5f2858b
This patch adds basic access statistics for historic layers
and exposes them in the management API's `LayerMapInfo`.
We record the accesses in the `{Delta,Image}Layer::load()` function
because it's the common path of
* page_service (`Timline::get_reconstruct_data()`)
* Compaction (`PersistentLayer::iter()` and `PersistentLayer::key_iter()`)
There is a killswitch in pageserver.toml to disable statistics gathering
to support before/after benchmarks. With the killswitch enabled, the
overhead of this feature is the function call and the atomic load.
Preceding PRs:
- #3504 add RequestContext plumbing for layer access stats
This is PR https://github.com/neondatabase/neon/pull/3496
19 lines
378 B
TOML
19 lines
378 B
TOML
[package]
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name = "pageserver_api"
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version = "0.1.0"
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edition.workspace = true
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license.workspace = true
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[dependencies]
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serde.workspace = true
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serde_with.workspace = true
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const_format.workspace = true
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anyhow.workspace = true
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bytes.workspace = true
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byteorder.workspace = true
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utils.workspace = true
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postgres_ffi.workspace = true
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workspace_hack.workspace = true
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enum-map = "2.4.2"
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