1612315 - 26.31% build times (windows2012-32) regression on push 55b4626066c40fad7afffeaeaf18217a46fb7ef6 (Wed January 15 2020)

Status: RESOLVED FIXED

(GeckoView :: General, defect)

Description

[Marian Raiciof [:marauder]]

We have detected a build metrics regression from push:

https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=55b4626066c40fad7afffeaeaf18217a46fb7ef6

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

Regressions:

26% build times windows2012-32 debug taskcluster-c5.4xlarge 2,118.69 -> 2,676.09

You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=24814

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 jobs in a pushlog format.

To learn more about the regressing test(s), please see: https://developer.mozilla.org/en-US/docs/Mozilla/Performance/Automated_Performance_Testing_and_Sheriffing/Build_Metrics

*** Please let us know your plans within 3 business days, or the offending patch(es) will be backed out! ***

Comment 1

[Marian Raiciof [:marauder]]

A few notes:

Graph:
https://treeherder.mozilla.org/perf.html#/graphs?highlightAlerts=1&selected=1724106,1025224096&series=autoland,1724106,1,2&timerange=2592000&zoom=1579065306951,1579218083885,1611.6465774521696,3309.7807425565907

The regression has been fixed by the back out of a different patch:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=9c66ecb1f66c42b2ed127e8ec90df685a3b8cbed&tochange=daf3b53c3efa7d7959f3f6ce2a8f0ffbbec1d7d3

daf3b53c3efa7d7959f3f6ce2a8f0ffbbec1d7d3 - Daniel Varga — Backed out changeset 540db822a1d4 (bug 1547111) for causing bug 1609568

Please let me know if this needs further investigations or we should close it as fixed.
Thanks!

Comment 2

[Eugen Sawin [:esawin]]

This can be closed, the GeckoView commit was not related to the regression.