Bug 206993 - Regression: fast/hidpi/image-srcset-relative-svg-canvas-2x.html is consistently failing on iOS EWS
Summary: Regression: fast/hidpi/image-srcset-relative-svg-canvas-2x.html is consistent...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Tools / Tests (show other bugs)
Version: Other
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Said Abou-Hallawa
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2020-01-30 04:58 PST by Aakash Jain
Modified: 2020-03-26 15:34 PDT (History)
5 users (show)

See Also:


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Description Aakash Jain 2020-01-30 04:58:50 PST
Regression: fast/hidpi/image-srcset-relative-svg-canvas-2x.html is consistently failing on iOS EWS.

This test was passing earlier on iOS, since yesterday (Jan 29) it started failing consistently on iOS EWS.

First failure in:
- Build: https://ews-build.webkit.org/#/builders/24/builds/9513 (the ToT used in this build was r255337)
- Result: https://ews-build.webkit.org/results/iOS-13-Simulator-WK2-Tests-EWS/r389098-9513-clean-tree/results.html

Recent examples:
https://ews-build.webkit.org/#/builders/24/builds/9616
https://ews-build.webkit.org/#/builders/24/builds/9606
https://ews-build.webkit.org/#/builders/24/builds/9604

Seems like a regression from r255331 (Bug 206254: REGRESSION: [ Mac ] fast/hidpi/image-srcset-relative-svg-canvas-2x.html is a flaky failure)
Comment 1 Aakash Jain 2020-01-30 05:02:10 PST
This issue doesn't seems to be happening on build.webkit.org bots https://results.webkit.org/?suite=layout-tests&test=fast%2Fhidpi%2Fimage-srcset-relative-svg-canvas-2x.html
Comment 2 Radar WebKit Bug Importer 2020-01-30 05:03:12 PST
<rdar://problem/59025405>
Comment 3 Alexey Proskuryakov 2020-01-30 10:02:54 PST
This is an antialiasing diff on circle border.
Comment 4 Alexey Proskuryakov 2020-01-30 10:04:16 PST
This sometimes means that a preceding test changes antialiasing settings, which affects subsequent tests. May be reproducible by running same tests as this single process does on EWS, in the same order.
Comment 5 Ryan Haddad 2020-01-30 15:07:46 PST
Marked as failing in https://trac.webkit.org/changeset/255462/webkit in an attempt to speed up EWS.
Comment 6 Ryan Haddad 2020-01-31 11:27:49 PST
(In reply to Ryan Haddad from comment #5)
> Marked as failing in https://trac.webkit.org/changeset/255462/webkit in an
> attempt to speed up EWS.
I think this caused another test to fail https://bugs.webkit.org/show_bug.cgi?id=207038

We'll need to repro this locally.
Comment 7 Aakash Jain 2020-02-23 05:32:37 PST
Test Expectations for this test were updated again so as to run this in EWS in https://trac.webkit.org/changeset/257091/webkit (See https://bugs.webkit.org/show_bug.cgi?id=207038#c11)

This has again started failing on EWS. e.g.: 
https://ews-build.webkit.org/#/builders/24/builds/11375
https://ews-build.webkit.org/#/builders/24/builds/11373