1905408 - 147.25 - 92.81% canvas2dvideo Mean tick time across 100 ticks: / canvas2dvideo Mean tick time across 100 ticks: (Linux) regression on Mon June 10 2024

Status: RESOLVED WONTFIX

(Core :: Graphics: Canvas2D, defect)

Description

[Andrej (:aglavic)]

Perfherder has detected a talos performance regression from push b4d3452deb40904ce0600f0dcb86a1d65a4110c9. As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

Ratio	Test	Platform	Options	Absolute values (old vs new)
147%	canvas2dvideo Mean tick time across 100 ticks:	linux1804-64-shippable-qr	e10s fission stylo webgl-ipc webrender	4.05 -> 10.00
93%	canvas2dvideo Mean tick time across 100 ticks:	linux1804-64-shippable-qr	e10s fission stylo webgl-ipc webrender	4.05 -> 7.81

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 patch(es) may be backed out in accordance with our regression policy.

If you need the profiling jobs you can trigger them yourself from treeherder job view or ask a sheriff to do that for you.

You can run these tests on try with ./mach try perf --alert 843

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 1901192

Comment 2

[Sotaro Ikeda [:sotaro OOO until July/21]]

Before Bug 1901192 fix, canvas2dvideo did not work correctly because of too much cpu usage on CanvasRenderThread like Bug 1901192 comment 2. Bug 1901192 fix, reduced the cpu usage significantly and it made canvas2dvideo work correctly. Then the regression is acceptable.