Investigate Ruby 2.7 GC compaction
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⏫ ROOT GitLab 1.8GB/2GB Focus https://gitlab.com/groups/gitlab-org/memory-team/-/epics/2 -
◀ PARENT Ruby 2.7 https://gitlab.com/groups/gitlab-org/memory-team/-/epics/2#note_446593060 - Aaron Patterson's talk on compaction https://gitlab.com/gitlab-org/memory-team/memory-team-2gb-week/-/issues/1#note_448192606
- How large is the Ruby heap vs OS heap? https://gitlab.com/gitlab-org/memory-team/memory-team-2gb-week/-/issues/1#note_448213147
- What is our heap layout before and after the Puma
masterstarts https://gitlab.com/gitlab-org/memory-team/memory-team-2gb-week/-/issues/1#note_448344648 - Manually triggering GC https://gitlab.com/gitlab-org/memory-team/memory-team-2gb-week/-/issues/1#note_448374279
- What impact does compaction have on Puma procs https://gitlab.com/gitlab-org/memory-team/memory-team-2gb-week/-/issues/1#note_448768588
- What happens to shared memory after compaction? https://gitlab.com/gitlab-org/memory-team/memory-team-2gb-week/-/issues/1#note_451497380
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