Vlad Lazar c12861cccd pageserver: finish vectored get early (#7490) ...

## Problem
If the previous step of the vectored left no further keyspace to
investigate (i.e. keyspace remains empty after removing keys completed in the previous step),
then we'd still grab the layers lock, potentially add an in-mem layer to the fringe
and at some further point read its index without reading any values from it.

## Summary of changes
If there's nothing left in the current keyspace, then skip the search
and just select the next item from the fringe as usual.

When running `test_pg_regress[release-pg16]` with the vectored read path
for singular gets this improved perf drastically (see PR cover letter).

## Correctness
Since no keys remained from the previous range (i.e. we are on a leaf
node) there's nothing that search can find in deeper nodes.

2024-04-24 15:36:23 +01:00

..

src

pageserver: finish vectored get early (#7490)

2024-04-24 15:36:23 +01:00

Cargo.toml

feat: bare-bones /v1/utilization (#6831)

2024-02-22 13:58:59 +02:00