1972981 - 9.46 - 8.84% background-resource pss-crashhelper-start / background-resource pss-crashhelper-end + 2 more (Android) regression on Wed June 11 2025

Status: NEW

(Firefox for Android :: Performance, defect)

Description

[Treeherder Bug Filer]

Perfherder has detected a mozperftest performance regression from push 5627a783623f9dc1c1e4345195ddc018d548bdd0. As author of one of the patches included in that push, we need your help to address this regression.

Please acknowledge, and begin investigating this alert within 3 business days, or the patch(es) may be backed out in accordance with our regression policy. Our guide to handling regression bugs has information about how you can proceed with this investigation.

If you have any questions or need any help with the investigation, please reach out to [e-mail]. Alternatively, you can find help on Slack by joining #perf-help, and on Matrix you can find help by joining #perftest.

Regressions:

Ratio	Test	Platform	Options	Absolute values (old vs new)
9%	background-resource pss-crashhelper-start	android-hw-a55-14-0-aarch64-shippable		20,011.58 -> 21,904.25
9%	background-resource pss-crashhelper-50%	android-hw-a55-14-0-aarch64-shippable		20,214.08 -> 22,117.42
9%	background-resource pss-crashhelper-10%	android-hw-a55-14-0-aarch64-shippable		20,123.92 -> 21,977.50
9%	background-resource pss-crashhelper-end	android-hw-a55-14-0-aarch64-shippable		20,337.67 -> 22,136.00

Improvements:

Ratio	Test	Platform	Options	Absolute values (old vs new)
10%	baseline-profile:fenix cold_startup.baseline.median	fenix-android-all		559.35 -> 502.63

Details of the alert can be found in the alert summary, including links to graphs and comparisons for each of the affected tests.

If you need the profiling jobs you can trigger them yourself from treeherder job view or ask [e-mail] to do that for you.

You can run all of these tests on try with ./mach try perf --alert 45537

The following documentation link provides more information about this command.

Comment 1

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

Set release status flags based on info from the regressing bug 1966496