1959968 - 17.69 - 4.16% damp console.log-in-loop-content-process-node / damp console.log-in-loop-content-process-infinity + 2 more (Windows) regression on Wed April 2 2025

Status: RESOLVED DUPLICATE of bug 1958241

(Core :: Privacy: Anti-Tracking, defect)

Description

[Treeherder Bug Filer]

Perfherder has detected a devtools performance regression from push 1dcb66eab4412818d5d0bbf36e8501d1b75b850d. 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)
18%	damp console.log-in-loop-content-process-node	windows11-64-24h2-shippable	e10s fission stylo webrender	86.68 -> 102.01
6%	damp console.log-in-loop-content-process-nan	windows11-64-24h2-shippable	e10s fission stylo webrender	22.87 -> 24.27
4%	damp console.log-in-loop-content-process-infinity	windows11-64-24h2-shippable	e10s fission stylo webrender	22.51 -> 23.49
4%	damp console.log-in-loop-content-process-infinity	windows11-64-24h2-shippable	e10s fission stylo webrender	22.65 -> 23.59

Improvements:

Ratio	Test	Platform	Options	Absolute values (old vs new)
6%	damp console.log-in-loop-content-process-undefined	windows11-64-24h2-shippable	e10s fission stylo webrender	23.45 -> 22.06
2%	damp source-map.allGeneratedPositionsFor.DAMP	windows11-64-24h2-shippable	e10s fission stylo webrender	73.69 -> 71.96

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 44653

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 1948288

Comment 2

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

:arai, since you are the author of the regressor, bug 1948288, could you take a look? Also, could you set the severity field?

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