Raptor has detected a Firefox performance regression from push: https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=d73d20bd962a12781eaf90c42837cd9ff7c66f90 As author of one of the patches included in that push, we need your help to address this regression. Regressions: 154% raptor-tp6-microsoft-firefox linux64 pgo 531.67 -> 1,352.72 151% raptor-tp6-microsoft-firefox windows10-64-qr opt 586.44 -> 1,471.62 137% raptor-tp6-microsoft-firefox windows7-32 pgo 615.61 -> 1,460.58 132% raptor-tp6-microsoft-firefox windows7-32 opt 605.63 -> 1,405.52 129% raptor-tp6-microsoft-firefox linux64 opt 594.41 -> 1,358.94 127% raptor-tp6-microsoft-firefox linux64-qr opt 627.65 -> 1,426.31 126% raptor-tp6-microsoft-firefox windows10-64 pgo 543.68 -> 1,227.66 100% raptor-tp6-microsoft-firefox windows10-64 opt 683.56 -> 1,369.68 5% raptor-tp6-imgur-firefox linux64 opt 309.19 -> 325.57 5% raptor-tp6-imgur-firefox linux64 pgo 287.01 -> 301.42 You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=18368 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

The Microsoft change is caused by the new mitmproxy patch Please observe the Microsoft attachments. I consider this a improvement. :rwood please confirm

The same for imgur Please observe the screenshots

Yes I agree! LGTM to accept this.