1916233 - 48.14 - 4.89% wikia largestContentfulPaint / wikia FirstVisualChange + 2 more (Windows) regression on Thu August 22 2024

Status: RESOLVED FIXED

(Core :: Networking: DNS, defect)

Description

[Treeherder Bug Filer]

Perfherder has detected a browsertime performance regression from push 5daa91615f4c9bb66298818b41525c714ff4bd4d. 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
48%	wikia largestContentfulPaint	windows11-64-shippable-qr	cold fission webrender	2,140.86 -> 3,171.52	Before/After
8%	expedia SpeedIndex	windows11-64-shippable-qr	cold fission webrender	800.13 -> 864.40	Before/After
6%	expedia ContentfulSpeedIndex	windows11-64-shippable-qr	cold fission webrender	558.36 -> 592.62	Before/After
5%	wikia FirstVisualChange	windows11-64-shippable-qr	cold fission webrender	162.82 -> 170.78	Before/After

Improvements:

Ratio	Test	Platform	Options	Absolute values (old vs new)	Performance Profiles
15%	pinterest fcp	linux1804-64-shippable-qr	cold fission webrender	767.39 -> 654.16	Before/After
14%	pinterest FirstVisualChange	linux1804-64-shippable-qr	cold fission webrender	812.68 -> 699.06	Before/After
12%	pinterest ContentfulSpeedIndex	linux1804-64-shippable-qr	cold fission webrender	1,191.60 -> 1,050.28	Before/After
7%	tumblr fcp	linux1804-64-shippable-qr	cold fission webrender	393.96 -> 366.46	Before/After
6%	tumblr FirstVisualChange	linux1804-64-shippable-qr	cold fission webrender	434.82 -> 407.00	Before/After
...	...	...	...	...	...
3%	pinterest largestContentfulPaint	linux1804-64-shippable-qr	cold fission webrender	1,238.34 -> 1,201.48	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 1797

For more information on performance sheriffing please see our FAQ.

Comment 1

[Kershaw Chang [:kershaw]]

bug 1910593 has been reverted, so this should be fixed.