1532278 - 14.78 - 26.51% raptor-tp6-slides-firefox / raptor-tp6-slides-firefox fcp (osx-10-10) regression on push 339a3c5969e1ccea01a68a0c61373cffd7436022\

Status: RESOLVED WONTFIX

(Core :: Graphics: ImageLib, defect, P3)

Description

[Ionuț Goldan [:igoldan]]

Raptor has detected a Firefox performance regression from push:

https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=9965eaf1e975e5f4ea2e5f71f632bd157ee4bb65&tochange=339a3c5969e1ccea01a68a0c61373cffd7436022

As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

27% raptor-tp6-slides-firefox fcp osx-10-10 opt 1,564.88 -> 1,979.75
15% raptor-tp6-slides-firefox osx-10-10 opt 2,371.64 -> 2,722.23

You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=19751

On the page above you can see an alert for each affected platform as well as a link to a graph showing the history of scores for this test. There is also a link to a Treeherder page showing the Raptor jobs in a pushlog format.

To learn more about the regressing test(s) or reproducing them, please see: https://wiki.mozilla.org/Performance_sheriffing/Raptor

*** Please let us know your plans within 3 business days, or the offending patch(es) will be backed out! ***

Our wiki page outlines the common responses and expectations: https://wiki.mozilla.org/Performance_sheriffing/Talos/RegressionBugsHandling

Comment 1

[Olli Pettay [:smaug][[e-mail]]]

Hmm, interesting.
In general bug 1519567 affected rather positively https://i.ibb.co/GJXSd8z/image.png

Comment 2

[Olli Pettay [:smaug][[e-mail]]]

My theory is that fcp regresses since we end up painting more when it happens.

Comment 3

[Olli Pettay [:smaug][[e-mail]]]

comment 1, improvements were significant in general.