Closed Bug 1390228 Opened 6 years ago Closed 6 years ago

3.33% sessionrestore_many_windows (linux64) regression on push f7e05dffb1ab4e0b9ed46fa2350c3b5fd4b9efe4 (Thu Aug 10 2017)


(Firefox :: Session Restore, defect)

53 Branch
Not set





(Reporter: jmaher, Unassigned)



(Keywords: perf, regression, talos-regression)

Talos has detected a Firefox performance regression from push:

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


  3%  sessionrestore_many_windows linux64 opt e10s     1,554.50 -> 1,606.33

You can find links to graphs and comparison views for each of the above tests at:

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:

For information on reproducing and debugging the regression, either on try or locally, see:

*** 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:
::dao, this landed recently and I see you authored the patch.  This is on mozilla-beta and I don't see a matching regression on m-c.- is this expected to regression mozilla-beta?
Flags: needinfo?(dao+bmo)
Component: Untriaged → Session Restore
oddly enough, both of these regressions have gone away after seeing this multi-patch commit land on beta:
Some sessionstore perf impact wouldn't be too surprising and unavoidable for the time being since we had to disable a feature. But I also think sessionrestore_many_windows isn't very reliable.
Closed: 6 years ago
Flags: needinfo?(dao+bmo)
Resolution: --- → WONTFIX
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