1916701 - 63.12% facebook-nav.friends ContentfulSpeedIndex (Windows) regression on Tue August 27 2024

Status: RESOLVED FIXED

(Firefox :: Sidebar, defect)

Description

[Treeherder Bug Filer]

Perfherder has detected a browsertime performance regression from push 95109305b579922c59ef5966e60c9397e48847ac. 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)
63%	facebook-nav.friends ContentfulSpeedIndex	windows11-64-shippable-qr	cold fission webrender	138.48 -> 225.90

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 1948

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Comment 1

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

Set release status flags based on info from the regressing bug 1910733

Comment 2

[Nikki Sharpley (:nikkis) (she/her)]

Looks like this was resolved in https://bugzilla.mozilla.org/show_bug.cgi?id=1915306 and included in 131.

Here's a graph to show its no longer an issue:
https://treeherder.mozilla.org/perfherder/graphs?highlightAlerts=1&highlightChangelogData=1&highlightCommonAlerts=0&replicates=0&series=autoland,84701,1,13&timerange=1209600