1421615 - 2.27 - 3.07% damp (linux64, windows7-32) regression on push a431116645e6 (Tue Nov 28 2017)

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?fromchange=b34741ad09ba0c73e982bffd7d88d36bd92dac42&tochange=a431116645e6e3ae61fa62ae77eca746ce88b95f

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

Regressions:

  3%  damp windows7-32 pgo e10s     243.29 -> 250.76
  2%  damp linux64 opt e10s         305.01 -> 312.58
  2%  damp windows7-32 opt e10s     307.94 -> 314.93


You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=10781

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]]

:jdescottes I see you added another DAMP test: inspector.layout. Similar to bugs like bug 1420364, I want to mark this as WONTFIX. I don't think you have any objections to that, do you?

Comment 2

[Julian Descottes [:jdescottes]]

Sounds good, thanks!