1493183 - 12.85 - 21.74% tp5o_webext responsiveness (linux64-qr, windows10-64, windows10-64-qr, windows7-32) regression on push 4bc0d86a17a8630ff5a2868980d72d3ecb9efb30 (Thu Sep 20 2018)

Status: RESOLVED INVALID

(Core :: WebRTC: Audio/Video, defect)

Description

[Robert Wood [:rwood]]

Talos has detected a Firefox performance regression from push:

https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?changeset=4bc0d86a17a8630ff5a2868980d72d3ecb9efb30

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

Improvements:

 22%  tp5o_webext responsiveness windows7-32 pgo e10s stylo         0.98 -> 0.77
 19%  tp5o_webext responsiveness windows7-32 opt e10s stylo         1.03 -> 0.83
 16%  tp5o_webext responsiveness windows10-64 opt e10s stylo        1.11 -> 0.94
 14%  tp5o_webext responsiveness windows10-64-qr opt e10s stylo     1.10 -> 0.95
 13%  tp5o_webext responsiveness linux64-qr opt e10s stylo          1.71 -> 1.49


You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=16055

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

[Robert Wood [:rwood]]

Hi Andrew, can you please have a look? Thanks!

Comment 2

[Robert Wood [:rwood]]

(In reply to Robert Wood [:rwood] from comment #1)
> Hi Andrew, can you please have a look? Thanks!

Oh wait, my mistake these are improvements - NOT regressions - which is good news! :) Please disregard my need info, no investigation or response required. Thank you! :)