1569954 - 1.57 - 10.95% tp5o_scroll / tscrollx (linux64-shippable-qr, windows10-64-shippable-qr) regression on push 472132eeee82d6ee852d27867151e5fb92057ffe

Status: RESOLVED DUPLICATE of bug 1569950

(Core :: Graphics: WebRender, defect, P2)

Description

[Ionuț Goldan [:igoldan]]

Talos has detected a Firefox performance regression from push:

https://hg.mozilla.org/releases/mozilla-beta/pushloghtml?fromchange=b7de4c7bb68d5f89ff1600cf103ef0d911dfc638&tochange=9fc885879ec5eeb2918c42a04d932a43870246fb

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

Regressions:

4% tp5o_scroll linux64-shippable-qr opt e10s stylo 2.34 -> 2.42
2% tp5o_scroll windows10-64-shippable-qr opt e10s stylo 1.66 -> 1.69

You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=21953

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