John Spray 4dc644612b pageserver: expose prometheus metrics for startup time (#4893) ...

## Problem

Currently to know how long pageserver startup took requires inspecting
logs.

## Summary of changes

`pageserver_startup_duration_ms` metric is added, with label `phase` for
different phases of startup.

These are broken down by phase, where the phases correspond to the
existing wait points in the code:
- Start of doing I/O
- When tenant load is done
- When initial size calculation is done
- When background jobs start
- Then "complete" when everything is done.

`pageserver_startup_is_loading` is a 0/1 gauge that indicates whether we are in the initial load of tenants.

`pageserver_tenant_activation_seconds` is a histogram of time in seconds taken to activate a tenant.

Co-authored-by: Joonas Koivunen <joonas@neon.tech>

2023-08-08 12:41:37 +03:00

..

benches

remove LayerDescriptor and use LayerObject for tests (#4637)

2023-07-10 19:40:37 +03:00

ctl

pagectl: skip metadata file in pagectl draw-timeline (#4872)

2023-08-07 08:24:50 +01:00

fixtures

walredo: simple tests and bench updates (#3045)

2023-01-16 18:24:45 +02:00

src

pageserver: expose prometheus metrics for startup time (#4893)

2023-08-08 12:41:37 +03:00

Cargo.toml

Limit concurrent compactions (#4777)

2023-07-25 10:19:04 +03:00