1377870 - 85.67% build times (linux64) regression on push 84a1f64cc8d7bcf668922bd1ebc4d0aff4c43566 (Fri Jun 30 2017)

Status: RESOLVED WORKSFORME

(Core :: Disability Access APIs, defect)

Description

[Ionuț Goldan [:igoldan]]

We have detected a build metrics regression from push:

https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?changeset=84a1f64cc8d7bcf668922bd1ebc4d0aff4c43566

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

Regressions:

 86%  build times summary linux64 opt artifact taskcluster-c4.4xlarge     133.25 -> 247.40


You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=7618

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

Comment 1

[Ionuț Goldan [:igoldan]]

:aklotz This regression is followed by an unrelated improvement. Could you look over this issue, confirm the regression and estimate a fix time?

Comment 2

[(No longer employed by Mozilla) Aaron Klotz]

Is the regression specific to linux64? Because that patch is Windows-only.

Comment 3

[Ionuț Goldan [:igoldan]]

Yes, this is linux64 specific. No regressions at all show up on Windows.

Comment 4

[Ionuț Goldan [:igoldan]]

:aklotz Did you manage to look over this issue, to improve the build time?

Comment 5

[(No longer employed by Mozilla) Aaron Klotz]

There's nothing that I can do. The code from that patch is not touched on the linux64 build. This must be caused by something else.

Comment 6

[Ionuț Goldan [:igoldan]]

The regression went away, so I will mark this as resolved.