1435169 - 5.94 - 6.22% damp (windows7-32) regression on push 2927a89dd437d3e152467bd5a9a10ac2e277393a (Wed Jan 31 2018)

Status: RESOLVED WONTFIX

(DevTools :: Console, defect)

Description

[Ionuț Goldan [:igoldan]]

Talos has detected a Firefox performance regression from push:

https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=2927a89dd437d3e152467bd5a9a10ac2e277393a

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

Regressions:

  6%  damp windows7-32 opt e10s     101.29 -> 107.59
  6%  damp windows7-32 pgo e10s     73.12 -> 77.46


You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=11371

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]]

:ochameau I noticed you made some changes to damp tests. Please mark this bug as WONTFIX unless the regressions weren't expected.

Comment 2

[Ionuț Goldan [:igoldan]]

Note: the regressions have lessen in a short time, from changesets that followd.

Comment 3

[Alexandre Poirot [:ochameau]]

Yes, this is the expected regression when adding a new test.
Thanks for the report!