Vlad Lazar de03742ca3 pageserver: drop layer map lock in Timeline::get (#7217) ...

## Problem
We currently hold the layer map read lock while doing IO on the read
path. This is not required for correctness.

## Summary of changes
Drop the layer map lock after figuring out which layer we wish to read
from.
Why is this correct:
* `Layer` models the lifecycle of an on disk layer. In the event the
layer is removed from local disk, it will be on demand downloaded
* `InMemoryLayer` holds the `EphemeralFile` which wraps the on disk
file. As long as the `InMemoryLayer` is in scope, it's safe to read from it.

Related https://github.com/neondatabase/neon/issues/6833

2024-03-26 14:35:36 +00:00

..

benches

walredo benchmark: throughput-oriented rewrite (#7190)

2024-03-21 15:24:56 +01:00

client

pageserver, controller: improve secondary download APIs for large shards (#7131)

2024-03-15 19:45:58 +00:00

compaction

Minor improvements to tiered compaction (#7020)

2024-03-05 16:26:51 +01:00

ctl

pageserver: optimise disk io for vectored get (#6780)

2024-02-28 12:06:00 +00:00

pagebench

tokio-epoll-uring: use it for on-demand downloads (#6992)

2024-03-15 18:57:05 +00:00

src

pageserver: drop layer map lock in Timeline::get (#7217)

2024-03-26 14:35:36 +00:00

test_data

Add walingest test (#5892)

2023-11-28 12:50:53 -05:00

Cargo.toml

build: make procfs linux only dependency (#7156)

2024-03-18 09:28:45 +00:00