1929533 - 5.63 - 3.8% Base Content Explicit / Base Content Resident Unique Memory + 2 more (Linux, OSX, Windows) regression on Thu October 31 2024

Status: RESOLVED WONTFIX

(Core :: Internationalization, defect)

Description

[Treeherder Bug Filer]

Perfherder has detected a awsy performance regression from push 6d6ee1c2471701a7ecc056d807cbbff12bd7fb8e. 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 Explicit	linux1804-64-shippable-qr	fission	6,877,525.33 -> 7,264,923.33
5%	Base Content Explicit	windows11-64-2009-shippable-qr	fission	7,682,146.67 -> 8,104,270.00
5%	Base Content Explicit	macosx1015-64-shippable-qr	fission	7,415,300.33 -> 7,801,522.67
4%	Base Content Resident Unique Memory	windows11-64-2009-shippable-qr	fission	10,706,261.33 -> 11,113,130.67

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 42413

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 1927706

Comment 2

[André Bargull [:anba]]

This is a known issue in more recent ICU versions, see bug 1927706, comment #0, bug 1864158, and https://unicode-org.atlassian.net/jira/software/c/projects/ICU/issues/ICU-22647.