1441538 - 3.09 - 15.38% damp (linux64, osx-10-10, windows10-64, windows7-32) regression on push c1d4e29c9e3bb8ab502df0ad53b0e396418212aa (Mon Feb 26 2018)

Status: RESOLVED WONTFIX

(DevTools :: Inspector, defect)

Description

[Ionuț Goldan [:igoldan]]

Talos has detected a Firefox performance regression from push:

https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=c1d4e29c9e3bb8ab502df0ad53b0e396418212aa

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

Regressions:

 15%  damp windows7-32 opt e10s stylo     60.32 -> 69.59
 10%  damp windows10-64 opt e10s stylo    54.13 -> 59.49
  6%  damp linux64 opt e10s stylo         49.92 -> 53.07
  4%  damp osx-10-10 opt e10s stylo       87.77 -> 91.54
  3%  damp linux64 pgo e10s stylo         46.84 -> 48.29


You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=11786

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

Comment 1

[Ionuț Goldan [:igoldan]]

Marking this as WONTFIX, as stated here https://bugzilla.mozilla.org/show_bug.cgi?id=1432416#c28