1568805 - 15.43% build times (windows2012-64-shippable) regression on push 2788a114ff306bdaab0479b4ddd813dd989b5ad0 (Fri July 19 2019)

Status: RESOLVED INVALID

(Core :: JavaScript Engine, defect)

Description

[Marian Raiciof [:marauder]]

We have detected a build metrics regression from push:

https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=2788a114ff306bdaab0479b4ddd813dd989b5ad0

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

Regressions:

15% build times windows2012-64-shippable opt nightly taskcluster-c5.4xlarge 3,109.89 -> 3,589.65

For up to date results, see: https://treeherder.mozilla.org/perf.html#/alerts?id=21978

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 Raptor jobs in a pushlog format.

To learn more about the regressing test(s) or reproducing them, 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

[Ted Campbell [:tcampbell]]

This seems likely unrelated and returned to normal a few days later and a similarly innocent patch.

https://treeherder.mozilla.org/perf.html#/graphs?series=autoland,1921077,1,2&selected=autoland,1921077,515966,868725470,2

I'm asking around on IRC to see if anyone knows about CI changes that might have been related.

Comment 2

[Florin Strugariu [:Bebe]]

There where some similar alerts on other test platforms in that time frame. I will further investigate this

Comment 3

[Florin Strugariu [:Bebe]]

This alert is not related to the current commit