1834682 - Regression on AWFY-Jetstream2-date-format-xparb-SP* tests around 22May2023

Status: RESOLVED WONTFIX

(Core :: JavaScript: GC, defect)

Description

[Mayank Bansal]

Look at the following :
https://treeherder.mozilla.org/perfherder/graphs?highlightAlerts=1&highlightChangelogData=1&highlightCommonAlerts=0&series=mozilla-central,3737981,1,13&series=mozilla-central,3737981,1,13&series=autoland,3911368,1,13&timerange=5184000&zoom=1684689703615,1684966607880,15.540451504668281,183.52122623012067

https://treeherder.mozilla.org/perfherder/graphs?highlightAlerts=1&highlightChangelogData=1&highlightCommonAlerts=0&series=mozilla-central,3737980,1,13&series=mozilla-central,3737980,1,13&series=autoland,3911367,1,13&timerange=5184000&zoom=1684620589515,1684961782935,66.91455928085799,119.81550485834794

Not sure what the regressor bug is.

Comment 1

[Mayank Bansal]

Looks like https://treeherder.mozilla.org/perfherder/alerts?id=38437 and https://treeherder.mozilla.org/perfherder/alerts?id=38440 are tracking regressions in the same range.

Comment 2

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

This bug has been marked as a regression. Setting status flag for Nightly to affected.

Comment 3

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

This bug was moved into the Performance component.

:mayankleoboy1, could you make sure the following information is on this bug?

• For slowness or high CPU usage, capture a profile with http://profiler.firefox.com/, upload it and share the link here.
• For memory usage issues, capture a memory dump from about:memory and attach it to this bug.
• Troubleshooting information: Go to about:support, click "Copy raw data to clipboard", paste it into a file, save it, and attach the file here.

If the requested information is already in the bug, please confirm it is recent.

Thank you.

Comment 4

[Donal Meehan [:dmeehan]]

:fdoty could this be triaged for severity?

Comment 5

[Denis Palmeiro [:denispal]]

I was able to bisect this down to bug 1832937

changeset 05a4a11191f04a710f2e37bcf43f18d9d2a2f8b5 has a date-format-xparb-SP-Worst score of 107 and the following changeset ec8f47936c4083af0e937c186b2a23ad3fb44687 has a date-format-xparb-SP-Worst score of 56

That being said, it looks like the score just went back to what is was 30 days ago.

Comment 6

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

Set release status flags based on info from the regressing bug 1832937

Comment 7

[Jon Coppeard (:jonco)]

(In reply to Denis Palmeiro [:denispal] from comment #5)
Funny enough, although I can reproduce the splay regression easily I can't reproduce this one locally at all.

That being said, it looks like the score just went back to what is was 30 days ago

In light of that, I'm going to close this WONTFIX.

It does suggest we could improve our string pretenuring heuristics in the future though.