1875447 - 132.93 - 4.09% google-search-restaurants ContentfulSpeedIndex / dailymail LastVisualChange + 9 more (Android) regression on Wed January 10 2024

Status: RESOLVED WONTFIX

(Testing :: Raptor, defect)

Description

[Acasandrei Beatrice (needinfo me)]

Perfherder has detected a browsertime performance regression from push 03be6a45140bf15382b04777d0e3abf02d7af112. 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)	Performance Profiles
133%	google-search-restaurants ContentfulSpeedIndex	android-hw-a51-11-0-aarch64-shippable-qr	cold webrender	428.33 -> 997.73	Before/After
70%	dailymail FirstVisualChange	android-hw-a51-11-0-aarch64-shippable-qr	cold webrender	420.06 -> 714.82	Before/After
67%	google-search-restaurants largestContentfulPaint	android-hw-a51-11-0-aarch64-shippable-qr	cold webrender	346.81 -> 578.90	Before/After
65%	dailymail SpeedIndex	android-hw-a51-11-0-aarch64-shippable-qr	cold webrender	553.32 -> 914.47	Before/After
64%	dailymail PerceptualSpeedIndex	android-hw-a51-11-0-aarch64-shippable-qr	cold webrender	521.11 -> 857.01	Before/After
59%	dailymail ContentfulSpeedIndex	android-hw-a51-11-0-aarch64-shippable-qr	cold webrender	478.96 -> 760.99	Before/After
24%	cnn-ampstories ContentfulSpeedIndex	android-hw-a51-11-0-aarch64-shippable-qr	cold webrender	890.01 -> 1,104.40	Before/After
24%	cnn-ampstories SpeedIndex	android-hw-a51-11-0-aarch64-shippable-qr	cold webrender	1,032.48 -> 1,278.85	Before/After
16%	cnn-ampstories LastVisualChange	android-hw-a51-11-0-aarch64-shippable-qr	cold webrender	1,132.84 -> 1,310.17	Before/After
8%	dailymail loadtime	android-hw-a51-11-0-aarch64-shippable-qr	cold webrender	1,967.78 -> 2,117.88	Before/After
4%	dailymail LastVisualChange	android-hw-a51-11-0-aarch64-shippable-qr	warm webrender	1,354.82 -> 1,410.17	Before/After

Improvements:

Ratio	Test	Platform	Options	Absolute values (old vs new)	Performance Profiles
7%	google-search-restaurants FirstVisualChange	android-hw-a51-11-0-aarch64-shippable-qr	warm webrender	150.47 -> 139.68	Before/After
7%	google-search-restaurants PerceptualSpeedIndex	android-hw-a51-11-0-aarch64-shippable-qr	warm webrender	157.28 -> 147.05	Before/After

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 these tests on try with ./mach try perf --alert 40992

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 1828667

Comment 2

[Andrej (:aglavic)]

I think this regression should be fine as this is a new baseline resultant from removing conditioned profiles.
:sparky are you okay with these performance changes as a result of what we did in 1828667?

Comment 3

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

Set release status flags based on info from the regressing bug 1828667

Comment 4

[Greg Mierzwinski [:sparky]]

Yup, I agree, this is a WONTFIX since it's a baseline change.