gitlab-org--gitlab-foss/changelogs/unreleased/63571-fix-gc-profiler-data-being-wiped.yml
Aleksei Lipniagov 1f9edb7c4a Call GC::Profiler.clear only in one place
Previously, both InfluxSampler and RubySampler were relying on the
`GC::Profiler.total_time` data which is the sum over the list
of captured GC events. Also, both samplers asynchronously called
`GC::Profiler.clear` which led to incorrect metric data because
each sampler has the wrong assumption it is the only object who calls
`GC::Profiler.clear` and thus could rely on the gathered results between
such calls.

We should ensure that `GC::Profiler.total_time` is called only in one
place making it possible to rely on accumulated data between such wipes.

Also, we need to track the amount of profiler reports we lost.
2019-08-02 09:04:32 +00:00

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---
title: Fix GC::Profiler metrics fetching
merge_request: 31331
author:
type: fixed