Open Bug 1736309 Opened 3 months ago Updated 22 hours ago

19.61 - 11.64% damp custom.inspector.reload.DAMP / damp custom.inspector.reload.DAMP + 6 more (Linux, OSX, Windows) regression on Mon October 11 2021

Categories

(DevTools :: General, defect)

defect

Tracking

(firefox-esr78 unaffected, firefox-esr91 unaffected, firefox93 unaffected, firefox94 unaffected, firefox95 wontfix, firefox96 wontfix, firefox97 wontfix)

Tracking Status
firefox-esr78 --- unaffected
firefox-esr91 --- unaffected
firefox93 --- unaffected
firefox94 --- unaffected
firefox95 --- wontfix
firefox96 --- wontfix
firefox97 --- wontfix

People

(Reporter: jdescottes, Unassigned, NeedInfo)

References

(Regression)

Details

(Keywords: perf, perf-alert, regression)

Perfherder has detected a devtools performance regression from push 5cc276dd61cc430ee317ae2c9c83b02497496935. 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)
20% damp custom.inspector.reload.DAMP macosx1015-64-shippable-qr e10s stylo webrender-sw 485.96 -> 581.25
20% damp custom.inspector.reload.DAMP macosx1015-64-shippable-qr e10s stylo webrender 485.76 -> 580.83
16% damp custom.inspector.reload.DAMP windows10-64-shippable-qr e10s stylo webrender-sw 564.40 -> 656.90
16% damp custom.inspector.reload.DAMP windows10-64-shippable-qr e10s stylo webrender 563.72 -> 653.49
15% damp custom.inspector.reload.DAMP windows10-64-shippable-qr e10s fission stylo webrender 541.10 -> 624.17
12% damp custom.inspector.reload.DAMP linux1804-64-shippable-qr e10s fission stylo webrender 614.40 -> 690.70
12% damp custom.inspector.reload.DAMP linux1804-64-shippable-qr e10s stylo webrender-sw 603.09 -> 673.42
12% damp custom.inspector.reload.DAMP linux1804-64-shippable-qr e10s stylo webrender 611.29 -> 682.45

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.

Could be a regression from one of the Promise.jsm cleanups? Eg Bug 1734786 or Bug 1734592

See Also: → 1734592, 1734786
Has Regression Range: --- → yes

Set release status flags based on info from the regressing bug 1734786

Flags: needinfo?(jdescottes)

Nicolas, this regression is caused by the Promise.jsm usage removal
Do we want to do something or close?

Flags: needinfo?(nchevobbe)

Wontfixing for 96, we can investigate that for 97.

Flags: needinfo?(jdescottes)
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