Talos has detected a Firefox performance regression from push: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=0ba46c050bb2377f409554806cb07e70c28803d5&tochange=8f88c817b3340c1857632da600179295ab4b01c4 As author of one of the patches included in that push, we need your help to address this regression. Regressions: 9% damp osx-10-10 opt e10s stylo 112.55 -> 122.75 7% damp windows7-32 opt e10s stylo 82.38 -> 88.12 4% damp windows10-64 opt e10s stylo 76.12 -> 79.21 You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=13092 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/Buildbot/Talos/Tests For information on reproducing and debugging the regression, either on try or locally, see: https://wiki.mozilla.org/Buildbot/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/Buildbot/Talos/RegressionBugsHandling

:ochameau I've marked this as wontfix, because bug 1454580 only added a new test.

(In reply to Ionuț Goldan [:igoldan], Performance Sheriffing from comment #1) > :ochameau I've marked this as wontfix, because bug 1454580 only added a new > test. Thanks, yes, that was the right call.