Open Bug 1747075 Opened 3 years ago Updated 2 years ago

16.89 - 6.03% perf_reftest coalesce-2.html / perf_reftest coalesce-1.html + 6 more (OSX, Windows) regression on Sat December 18 2021

Categories

(Core :: CSS Parsing and Computation, defect)

Product:
Core
Component:
CSS Parsing and Computation
Type:
defect

Tracking

()

Tracking Flags:
Tracking Status
firefox-esr91 --- unaffected
firefox95 --- unaffected
firefox96 --- unaffected
firefox97 --- wontfix

People

(Reporter: aesanu, Assigned: emilio)

References

(Regression)

Details

(4 keywords)

Perfherder has detected a talos performance regression from push b050582bc984b158bc89a62f41466d46475c8450. 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)
17% perf_reftest coalesce-2.html windows10-64-shippable-qr e10s fission stylo webrender 23.23 -> 27.15
15% perf_reftest coalesce-2.html macosx1015-64-shippable-qr e10s fission stylo webrender 24.52 -> 28.13
14% perf_reftest coalesce-2.html macosx1015-64-shippable-qr e10s stylo webrender-sw 25.44 -> 28.97
11% perf_reftest coalesce-2.html macosx1014-64-shippable-qr e10s stylo webrender 37.09 -> 41.29
11% perf_reftest coalesce-2.html macosx1014-64-shippable-qr e10s stylo webrender-sw 37.16 -> 41.24
11% perf_reftest coalesce-2.html macosx1014-64-shippable-qr e10s fission stylo webrender 39.00 -> 43.10
6% perf_reftest coalesce-1.html macosx1015-64-shippable-qr e10s stylo webrender 62.36 -> 66.23
6% perf_reftest coalesce-1.html macosx1015-64-shippable-qr e10s stylo webrender-sw 62.51 -> 66.28

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?(emilio)

Set release status flags based on info from the regressing bug 1744102

status-firefox95: --- → unaffected
status-firefox96: --- → unaffected
status-firefox-esr91: --- → unaffected
Assignee: nobody → emilio

Let's see if bug 1747037 fixes this.

Depends on: 1747037

Not seeing any obvious improvements in the graphs after that landed.

Per discussion with Emilio, wontfix for 97 but leaving the bug open for now for future investigation.

status-firefox97: affected → wontfix
Has Regression Range: --- → yes
Flags: needinfo?(emilio)
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