1814808 - Move chunk releasing out of the arena lock's critical section

Status: RESOLVED FIXED

(Core :: Memory Allocator, enhancement, P1)

Comment 1

[Paul Bone [:pbone]]

Attachment: Bug 1814808 - Move chunk releasing out of the arena lock's critical section r=glandium

The system calls of releasing a chunk of memory can be costly and should be
done outside the arena lock's critical section so that other threads aren't
blocked waiting for the lock.

Comment 2

[Paul Bone [:pbone]]

Performance results show some improvments on browser time tests on most pages, regressions on some pages, both mostly on Windows. No change on AWSY or Speedometer. There are some outlier results for speedometer on MacOS but they're too "lucky".

https://treeherder.mozilla.org/perfherder/compare?originalProject=try&originalRevision=997050d52fd95aaf533fbc4d3983c37511f8ca3f&newProject=try&newRevision=2d554cb42a561ea166f1f08540304a6c5ee85173&framework=13&page=1&filter=speedometer

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/850b602e5051
Move chunk releasing out of the arena lock's critical section r=glandium

Comment 4

[Cristian Tuns]

https://hg.mozilla.org/mozilla-central/rev/850b602e5051