(In reply to Dão Gottwald [::dao] from comment #1) > How confident are we in the regression range? Pretty confident - https://treeherder.mozilla.org/#/jobs?repo=autoland&selectedJob=268135406&group_state=expanded&tochange=517c9efa9592ad0c103ec2542e4bc7fcaf06c505&fromchange=a5c23245837ebdd99532e8bfaca05774c5c96d9d&searchStr=awsy . What would be interesting is knowing whether the needle moved at all on other platforms. > I have no idea off-hand how bug 1580538 could have caused this. The job details have memory reports for the subtests that regressed ( https://treeherder.mozilla.org/perf.html#/comparesubtest?framework=4&originalProject=autoland&originalSignature=2118213&newProject=autoland&newSignature=2118213&originalRevision=ac5fc1e491a2bb5481d47247bea3c2b22318001c&newRevision=517c9efa9592ad0c103ec2542e4bc7fcaf06c505 ) which you can compare in about:memory to see what's eating the extra memory.
Bug 1584101 Comment 2 Edit History
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(In reply to Dão Gottwald [::dao] from comment #1) > How confident are we in the regression range? Pretty confident - https://treeherder.mozilla.org/#/jobs?repo=autoland&selectedJob=268135406&group_state=expanded&tochange=517c9efa9592ad0c103ec2542e4bc7fcaf06c505&fromchange=a5c23245837ebdd99532e8bfaca05774c5c96d9d&searchStr=awsy . What would be interesting is knowing whether the needle moved at all on other platforms. > I have no idea off-hand how bug 1580538 could have caused this. The job details have memory reports (see 'job details' tab on https://treeherder.mozilla.org/#/jobs?repo=autoland&group_state=expanded&searchStr=awsy&revision=517c9efa9592ad0c103ec2542e4bc7fcaf06c505&selectedJob=268135403 ) for the subtests that regressed ( https://treeherder.mozilla.org/perf.html#/comparesubtest?framework=4&originalProject=autoland&originalSignature=2118213&newProject=autoland&newSignature=2118213&originalRevision=ac5fc1e491a2bb5481d47247bea3c2b22318001c&newRevision=517c9efa9592ad0c103ec2542e4bc7fcaf06c505 ) which you can compare in about:memory to see what's eating the extra memory.