1936238 - 20.21 - 19.11% matrix-react-bench / matrix-react-bench (OSX) regression on Wed December 4 2024

Status: RESOLVED DUPLICATE of bug 1936156

(Core :: Layout: Scrolling and Overflow, defect)

Description

[Treeherder Bug Filer]

Perfherder has detected a browsertime performance regression from push 7947178ec5dd3647c6556a01dc21f85bd3092da4. 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)	Performance Profiles
20%	matrix-react-bench	macosx1015-64-shippable-qr	fission webrender	21.49 -> 25.84	Before/After
19%	matrix-react-bench	macosx1015-64-shippable-qr	fission webrender	21.55 -> 25.67	Before/After

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 all of these tests on try with ./mach try perf --alert 43040

The following documentation link provides more information about this command.

For more information on performance sheriffing please see our FAQ.

If you have any questions, please do not hesitate to reach out to [e-mail].

Comment 1

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

Set release status flags based on info from the regressing bug 1931490

Comment 2

[Emilio Cobos Álvarez [:emilio]]

See bug 1936156. Confirmed that patch fixes the regression: https://perf.compare/compare-results?baseRev=32c2dca691ce4de0b123b5cd67bf1f2e46f0e519&baseRepo=try&newRev=f5f0f14e7d8df93726a3fb7eeaa7be4ae626141d&newRepo=try&framework=13