1832529 - 3.6% google-maps LastVisualChange (Android) regression on Wed May 3 2023

Status: RESOLVED WONTFIX

(Core :: XPCOM, defect)

Description

[Alex Finder]

Perfherder has detected a browsertime performance regression from push 8543ea21ab87762a088727a23114c712501b9dec. 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)
4%	google-maps LastVisualChange	android-hw-a51-11-0-aarch64-shippable-qr	warm webrender	723.79 -> 749.83

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

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Comment 1

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

Set release status flags based on info from the regressing bug 1830139

Comment 2

[Pascal Chevrel:pascalc]

Marking as disabled for 114 as the preference change in bug 1830139 was nightly only.

Comment 3

[Justin Link]

I think this is situation analogous to what we saw in https://bugzilla.mozilla.org/show_bug.cgi?id=1828871. There is a change in the LastVisualChange metric but the more important metrics (https://treeherder.mozilla.org/perfherder/graphs?highlightAlerts=1&highlightChangelogData=1&highlightCommonAlerts=0&series=autoland,4375286,1,13&series=autoland,4375287,1,13&series=autoland,4375276,1,13&series=autoland,4375280,1,13&series=autoland,4375284,1,13&series=autoland,4375282,1,13&timerange=5184000&zoom=1682945017975,1683914344601,16.999969482421946,1246.9999694824219) seem to be unchanged during that period.