1617100 - 11.74 - 26.47% raptor-tp6m-espn-geckoview-cold / raptor-tp6m-espn-geckoview-cold fcp / raptor-tp6m-espn-geckoview-cold loadtime (android-hw-p2-8-0-android-aarch64) regression on push a9091629c4f81bc5da7143cf64a187b5e1fbb97e (Tue February 18 2020)

Status: RESOLVED FIXED

(Core :: DOM: Navigation, defect)

Description

[Alexandru Ionescu (needinfo me) [:alexandrui]]

Raptor has detected a Firefox performance regression from push:

https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=a9091629c4f81bc5da7143cf64a187b5e1fbb97e

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

Regressions:

26% raptor-tp6m-espn-geckoview-cold loadtime android-hw-p2-8-0-android-aarch64 pgo 2,577.58 -> 3,259.83
26% raptor-tp6m-espn-geckoview-cold loadtime android-hw-p2-8-0-android-aarch64 pgo 2,589.00 -> 3,274.17
22% raptor-tp6m-espn-geckoview-cold android-hw-p2-8-0-android-aarch64 pgo 2,059.02 -> 2,512.37
12% raptor-tp6m-espn-geckoview-cold fcp android-hw-p2-8-0-android-aarch64 pgo 4,012.08 -> 4,483.17

You can find links to graphs and comparison views for each of the above tests at: https://treeherder.mozilla.org/perf.html#/alerts?id=25037

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://wiki.mozilla.org/TestEngineering/Performance/Raptor

*** 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/TestEngineering/Performance/Talos/RegressionBugsHandling

Comment 1

[Jeff Muizelaar [:jrmuizel]]

This regression seems to have gone away.

Comment 2

[Jens Stutte [:jstutte]]

Jeff, where can we see this? Thanks!

Comment 3

[Jeff Muizelaar [:jrmuizel]]

You can look at the graphs for the individual regressions e.g.:
https://treeherder.mozilla.org/perf.html#/graphs?timerange=2592000&series=autoland,2026981,1,10

Comment 4

[BugBot [:suhaib / :marco/ :calixte]]

The priority flag is not set for this bug.
:peterv, could you have a look please?

For more information, please visit auto_nag documentation.