Bug 255250

Summary:	REGRESSION (260364@main-260393@main): [ iOS , Ventura ] 2x TestWebKitAPI.GPUProcess tests are near constant failures
Product:	WebKit	Reporter:	Bri Harris <bharris9>
Component:	New Bugs	Assignee:	Chris Dumez <cdumez>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	cdumez, jer.noble, simon.fraser, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Other
Hardware:	Unspecified
OS:	Unspecified

Description Bri Harris 2023-04-10 14:56:03 PDT

The following 2 API Tests:

TestWebKitAPI.GPUProcess.ExitsUnderMemoryPressureWebAudioCase
TestWebKitAPI.GPUProcess.ExitsUnderMemoryPressureWebAudioNonRenderingAudioContext

are constant failures on iOS 16 and a flaky failure on Ventura Release.


HISTORY:

https://results.webkit.org/?suite=api-tests&suite=api-tests&test=TestWebKitAPI.GPUProcess.ExitsUnderMemoryPressureWebAudioCase&test=TestWebKitAPI.GPUProcess.ExitsUnderMemoryPressureWebAudioNonRenderingAudioContext

TEXT for WebAudioCase:

Expected equality of these values:
          gpuProcessPID
            Which is: 75063
          [configuration.get().processPool _gpuProcessIdentifier]
            Which is: 0


TEXT for AudioNonRenderingAudioContext:
Expected equality of these values:
          gpuProcessPID
            Which is: 75072
          [configuration.get().processPool _gpuProcessIdentifier]
            Which is: 0
Expected equality of these values:
          0
          [configuration.get().processPool _gpuProcessIdentifier]
            Which is: 75073

Comment 1 Radar WebKit Bug Importer 2023-04-10 14:57:40 PDT

<rdar://problem/107852513>

Comment 2 Ryan Haddad 2023-04-19 15:57:43 PDT

Looking at the history of these tests on iOS, it appears that the failures may have been arm64 only, so it became more apparent when we moved bots to M2 hardware.

https://results.webkit.org/?suite=api-tests&suite=api-tests&test=TestWebKitAPI.GPUProcess.ExitsUnderMemoryPressureWebAudioCase&test=TestWebKitAPI.GPUProcess.ExitsUnderMemoryPressureWebAudioNonRenderingAudioContext&platform=ios&recent=False&architecture=arm64

This appears to be the regression range: http://commits.webkit.org/compare/260393@main...260364@main

Comment 3 Chris Dumez 2023-05-04 19:33:36 PDT

Pull request: https://github.com/WebKit/WebKit/pull/13475

Comment 4 EWS 2023-05-05 11:31:39 PDT

Committed 263728@main (8bc686eae52a): <https://commits.webkit.org/263728@main>

Reviewed commits have been landed. Closing PR #13475 and removing active labels.