1548778 - 2.26% tart (windows7-32-shippable) regression on push a027a998b8b79bd4afa15930d7ca22c3acb7b16c (Wed May 1 2019)

Status: RESOLVED WONTFIX

(Core :: Graphics: Layers, defect)

Description

[Cristina Coroiu [:ccoroiu]]

Talos has detected a Firefox performance regression from push:

https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=5e3c456acd732fc8ed215869c1d683a0e3e4a2b5&tochange=b5867ca37387ceb32cb16f0c782b68a3c9519842

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

Regressions:

2% tart windows7-32-shippable opt e10s stylo 2.68 -> 2.74

Improvements:

17% glterrain windows7-32-shippable opt e10s stylo 0.91 -> 0.76

You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=20747

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 Talos jobs in a pushlog format.

To learn more about the regressing test(s), please see: https://wiki.mozilla.org/Performance_sheriffing/Talos/Tests

For information on reproducing and debugging the regression, either on try or locally, see: https://wiki.mozilla.org/Performance_sheriffing/Talos/Running

*** 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

[Ryan Hunt [:rhunt] (on leave until early May)]

This change just reverted bug 1544538, which had regressions, so we should accept these changes.