1951923 - 6.02 - 2.2% Base Content Heap Unclassified / Base Content Resident Unique Memory + 1 more (Windows) regression on Mon March 3 2025

Status: RESOLVED DUPLICATE of bug 1951925

(Core :: IPC, defect)

Description

[Treeherder Bug Filer]

Perfherder has detected a awsy performance regression from push 8d9053f1c203432fa6e1944fd1315eee47ef0bc8. 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)
6%	Base Content Heap Unclassified	windows11-64-24h2-shippable	fission	1,934,662.00 -> 2,051,093.33
4%	Base Content Explicit	windows11-64-24h2-shippable	fission	8,168,515.33 -> 8,504,342.00
2%	Base Content Resident Unique Memory	windows11-64-24h2-shippable	fission	11,531,861.33 -> 11,785,728.00

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 44195

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 1942129

Comment 2

[Alex Franchuk [:afranchuk]]

This particular push was backed out. See bug 1951925 for the subsequent push which wasn't backed out.