1870074 - 1.94 - 1.83% compiler_metrics num_static_constructors / compiler_metrics num_static_constructors (Windows) regression on Fri December 8 2023

Status: NEW

(Core :: Audio/Video, defect, P3)

Description

[Alex Finder]

Perfherder has detected a build_metrics performance regression from push dad6d260d8b9c7a98ddeb6546039a6ef2b9fe4b1. 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)
2%	compiler_metrics num_static_constructors	windows2012-64		159.17 -> 162.25
2%	compiler_metrics num_static_constructors	windows2012-32		168.17 -> 171.25

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.

For more information on performance sheriffing please see our FAQ.

Comment 1

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

Set release status flags based on info from the regressing bug 1860899

:chunmin, since you are the author of the regressor, bug 1860899, could you take a look? Also, could you set the severity field?

For more information, please visit BugBot documentation.

Comment 2

[C.M.Chang[:chunmin]]

FFmpegVideoEncoder is only on Linux. Is any additional reports I can see the link between this Windows bug and the FFmpegVideoEncoder?

Comment 3

[Alex Finder]

(In reply to C.M.Chang[:chunmin] from comment #2)

FFmpegVideoEncoder is only on Linux. Is any additional reports I can see the link between this Windows bug and the FFmpegVideoEncoder?

The only page where we can see any kind of reports, from what I know is the following Perfcompare link, where we can see a performance comparison between this push and the previous one. By hiding uncertain results, we can see the performance regression recorded for this test, on Windows, and by viewing only the important changes, we can see other performance changes on Windows for the "fetch_content opt" test (there's also and Android related result as well). Please let me know via a :ni if there are other questions I can help answer.

Comment 4

[Donal Meehan [:dmeehan]]

:jimm could this be triaged for severity?

Comment 5

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

Set release status flags based on info from the regressing bug 1860899