Closed Bug 1750951 Opened 3 years ago Closed 3 years ago

147.2 - 5.95% linkedin FirstVisualChange / expedia FirstVisualChange + 8 more (Linux, Windows) regression on Mon January 17 2022

Categories

(Core :: Layout, defect)

Product:
Core
Component:
Layout
Version:
Firefox 98
Type:
defect

Tracking

()

Status:
RESOLVED FIXED
Milestone:
98 Branch
Tracking Flags:
Tracking Status
firefox-esr91 --- unaffected
firefox96 --- unaffected
firefox97 --- unaffected
firefox98 --- fixed

People

(Reporter: alexandrui, Unassigned)

References

(Regression)

Details

(Keywords: perf, perf-alert, regression)

Perfherder has detected a browsertime performance regression from push 8739b71b8bd98f09e3d715e7df42511b2972707e. 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)
147% linkedin FirstVisualChange linux1804-64-shippable-qr cold fission webrender 713.33 -> 1,763.33
49% linkedin SpeedIndex linux1804-64-shippable-qr cold fission webrender 1,349.25 -> 2,006.33
43% linkedin PerceptualSpeedIndex linux1804-64-shippable-qr cold fission webrender 1,463.00 -> 2,097.33
23% linkedin ContentfulSpeedIndex linux1804-64-shippable-qr cold fission webrender 1,849.88 -> 2,266.25
10% twitch PerceptualSpeedIndex linux1804-64-shippable-qr fission warm webrender 277.54 -> 304.33
8% google-search ContentfulSpeedIndex windows10-64-shippable-qr cold fission webrender 309.83 -> 333.83
8% google-search FirstVisualChange windows10-64-shippable-qr cold fission webrender 309.83 -> 333.83
7% google-search PerceptualSpeedIndex windows10-64-shippable-qr cold fission webrender 310.88 -> 333.92
7% google-search SpeedIndex windows10-64-shippable-qr cold fission webrender 312.79 -> 334.08
6% expedia FirstVisualChange linux1804-64-shippable-qr cold fission webrender 560.00 -> 593.33

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 offending patch(es) will be backed out in accordance with our regression policy.

For more information on performance sheriffing please see our FAQ.

Flags: needinfo?(bugs)

Set release status flags based on info from the regressing bug 1740499

status-firefox96: --- → unaffected
status-firefox97: --- → unaffected
status-firefox-esr91: --- → unaffected

The fix for this is being tracked in bug 1750732.
I have some try runs ongoing, but if I can't figure out the issue soon, I'll back out.

Flags: needinfo?(bugs)
Has Regression Range: --- → yes

This was fixed by backing out bug 1740499.

Status: NEW → RESOLVED
Closed: 3 years ago
Resolution: --- → FIXED
status-firefox98: affected → fixed
Target Milestone: --- → 98 Branch
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