Bug 220187

Summary: REGRESSION (2020-10-23): webanimations/accelerated-animation-with-easing.html is flaky on Mac Debug
Product: WebKit Reporter: Alexey Proskuryakov <ap>
Component: AnimationsAssignee: Antoine Quint <graouts>
Status: RESOLVED DUPLICATE    
Severity: Normal CC: dino, graouts, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Patch
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Description Alexey Proskuryakov 2020-12-28 12:59:47 PST 
webanimations/accelerated-animation-with-easing.html used to pass reliably on Mac (not on Linux), but it's become flaky on Debug starting 2020-10-23. 

First failure observed on r268941. The closest animations related change before that was http://trac.webkit.org/r268932.

History: https://results.webkit.org/?suite=layout-tests&test=webanimations%2Faccelerated-animation-with-easing.html

The diff is an image, there is a thick red line on actual image.
Comment 1 Alexey Proskuryakov 2020-12-28 13:04:07 PST 
Added a flaky expectation in http://trac.webkit.org/r271104
Comment 2 Radar WebKit Bug Importer 2021-01-04 13:00:26 PST 
<rdar://problem/72796329>
Comment 3 Antoine Quint 2021-01-06 08:04:44 PST 
Created attachment 417086 [details]
Patch
Comment 4 Antoine Quint 2021-01-06 08:15:46 PST 
Created attachment 417087 [details]
Patch
Comment 5 EWS 2021-01-06 12:03:24 PST 
Committed r271208: <https://trac.webkit.org/changeset/271208>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 417087 [details].
Comment 6 Antoine Quint 2021-01-07 00:05:04 PST 
Does not seem to have helped much on the bots :(
Comment 7 Antoine Quint 2021-04-08 05:36:54 PDT 
This used to reproduce the issue reliably:

rwt --debug --iterations=10000 --force --exit-after-n-failures=1 --no-build webanimations/accelerated-animation-with-easing.html

… but doesn't anymore.
Comment 8 Alexey Proskuryakov 2021-04-08 10:19:22 PDT 
On the bots, I see flakiness in all configurations, but mostly on release, ASan and GuardMalloc - failures in debug are rare.
Comment 9 Antoine Quint 2021-04-09 08:54:59 PDT 
I'll be addressing this in bug 224066.

*** This bug has been marked as a duplicate of bug 224066 ***