1670272 - perf regression on Oct 7 on Gl Video and Tp6 Godot, seen at arewefastyet.com

Status: RESOLVED DUPLICATE of bug 1670542

(Core :: Graphics: CanvasWebGL, defect)

Description

[Steve Fink [:sfink] [:s:]]

Gl Video is the more noticeable of the two: https://treeherder.mozilla.org/perf.html#/graphs?series=mozilla-central,1934057,1,1&timerange=5184000

It went from 5ms -> 33ms on Windows. (Linux64 is steady at 14ms.)

Godot: https://treeherder.mozilla.org/perf.html#/graphs?highlightAlerts=1&selected=1931779,1234829652&series=mozilla-central,1931779,1,10&series=mozilla-central,1982142,1,10&series=mozilla-central,1931785,1,10&timerange=5184000

This also does not appear to affect Linux64.

Comment 1

[Nicolas B. Pierron [:nbp]]

Regression range: https://hg.mozilla.org/mozilla-central/pushloghtml?changeset=a42aa95147941ca7983eaf4846b644e207de24f8

Tooru, Jan and Jon, any idea which of the patches in this regression range might be the offender?

Comment 2

[Tooru Fujisawa [:arai]]

if this is windows-specific and also webgl-specific, bug 1669530 sounds related
https://hg.mozilla.org/mozilla-central/rev/97aed0b14f2488ca281df591892754946a447e1b
and also there's a bug for the regression there as well, bug 1670542.

is it possible to run the benchmark on the specific revision?

Comment 3

[Nicolas B. Pierron [:nbp]]

(In reply to Tooru Fujisawa [:arai] from comment #2)

is it possible to run the benchmark on the specific revision?

You should be able to trigger these benchmarks via the treeherder ui.

Comment 4

[Tooru Fujisawa [:arai]]

thanks
triggered T(webgl) job for
https://treeherder.mozilla.org/#/jobs?repo=autoland&group_state=expanded&revision=97aed0b14f2488ca281df591892754946a447e1b
(after)
and
https://treeherder.mozilla.org/#/jobs?repo=autoland&group_state=expanded&revision=e2438dd9b47fce310c3ca7f8de5c9f886ce8cdb7
(before)

Comment 5

[Nicolas B. Pierron [:nbp]]

Thanks.

https://treeherder.mozilla.org/perf.html#/compare?originalProject=autoland&originalRevision=e2438dd9b47fce310c3ca7f8de5c9f886ce8cdb7&newProject=autoland&newRevision=97aed0b14f2488ca281df591892754946a447e1b&framework=1

This is likely to be a duplicate of bug 1670542, but I will let Jeff decide whether this bug should be handled differently.