Christian Schwarz a0c82969a2 page cache: per-task-kind access stats (#5339) ...

This PR adds a `task_kind` label to page cache access metrics.

These are to validate our hypothesis that the high hit page cache rate
we observe in prod is due to internal tasks, not getpage requests from
compute.
We believe the latter should near-always be a pageserver-page-cache
_miss_ because compute has it's own page cache, and hence there is no
locality of reference for its accesses to pageserver page cache.

Before this PR, we didn't have `RequestContext` propagation to any code
below the on-demand downloader.
The vast majority of changes in this PR is concerned with adding that
propagation.

2023-09-25 18:30:10 +02:00

..

src

page cache: per-task-kind access stats (#5339)

2023-09-25 18:30:10 +02:00

Cargo.toml

Preparatory pageserver async conversions (#4773)

2023-07-24 14:01:54 +02:00