1646400 - 30.63% glterrain (macosx1014-64-shippable) regression on push 567a8768593eb06a86deb263f94d9de2d3d3e8fa (Mon June 15 2020)

Status: RESOLVED WONTFIX

(Core :: Graphics: CanvasWebGL, defect, P2)

Description

[Alexandru Ionescu (needinfo me) [:alexandrui]]

Perfherder has detected a talos performance regression from push 567a8768593eb06a86deb263f94d9de2d3d3e8fa. As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

31% glterrain macosx1014-64-shippable opt e10s stylo 2.96 -> 3.86

Improvements:

35% glterrain macosx1014-64-shippable opt e10s stylo 4.58 -> 2.96
6% glterrain linux64-shippable opt e10s stylo 9.78 -> 9.16
4% glterrain linux64-shippable-qr opt e10s stylo 9.95 -> 9.57

Details of the alert can be found in the alert summary, including links to graphs and comparisons for each of the affected tests. Please follow our guide to handling regression bugs and let us know your plans within 3 business days, or the offending patch(es) will be backed out in accordance with our regression policy.

For more information on performance sheriffing please see our FAQ.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

Set release status flags based on info from the regressing bug 1632249

Comment 2

[Ryan VanderMeulen [:RyanVM]]

Confirmed that this regression rode to Beta with the 79 uplift yesterday.