1692226 - 2 - 2.47% Images (macosx1014-64-shippable-qr) regression on push bd2b705457a3a72b97d343eb1ffa29a3bd9a7ecd (Tue February 9 2021)

Status: RESOLVED WONTFIX

(Core :: Panning and Zooming, defect)

Description

[Andra Esanu (needinfo me)]

Perfherder has detected a awsy performance regression from push bd2b705457a3a72b97d343eb1ffa29a3bd9a7ecd. As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

Ratio	Suite	Test	Platform	Options	Absolute values (old vs new)
2%	Images		macosx1014-64-shippable-qr	tp6	9,036,642.26 -> 9,259,799.06
2%	Images		macosx1014-64-shippable-qr	tp6	9,080,225.10 -> 9,261,857.70

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.

Comment 1

[Timothy Nikkel (:tnikkel)]

Bug 1691160 was fixing a regression caused by bug 1687927. In bug 1687927 you can see the improvements that it was tagged with. I expect these perf regressions to be the mirror image of the improvements that bug 1687927 caused. Can you confirm?

Comment 2

[Andra Esanu (needinfo me)]

These perf regressions are the mirror imagine of the improvements of Bug 1687927, but we have no alert for the improvements because they were just under the threshold while the regressions are just over the threshold.

Comment 3

[Timothy Nikkel (:tnikkel)]

So we should resolve this as wontfix then?