Bug 237854 – REGRESSION(r288464?):[ iOS15 Release GPUP arm64 ] TestWebKitAPI.GPUProcess.ExitsUnderMemoryPressureGetUserMediaAudioCase is a constant failure

• Status: RESOLVED
• Resolution: FIXED
• Component: WebRTC

[Robert Jenner]

TestWebKitAPI.GPUProcess.ExitsUnderMemoryPressureWebRTCCase 

is a constantly failing api-test on iOS15 Release GPUP simulators running on arm64.

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

    
Failure Text:
TestWebKitAPI.GPUProcess.ExitsUnderMemoryPressureWebRTCCase
        2022-03-14 09:08:40.058 TestWebKitAPI[18453:83620880] Writing analzed variants.
        (webrtc_video_engine.cc:3482): Absent receive stream; ignoring clearing encoded frame sink for ssrc 0
        thread_policy_set(1) returned 46.....

        
        /Volumes/Data/worker/ios-simulator-15-release/build/Tools/TestWebKitAPI/Tests/WebKitCocoa/GPUProcess.mm:630
        Expected equality of these values:
          0
          [configuration.get().processPool _gpuProcessIdentifier]
            Which is: 18459

[Radar WebKit Bug Importer]

<rdar://problem/90273222>

[Robert Jenner]

I was able to reproduce the failure at iOS15 Release ToT using the following test:

run-api-tests --ios-simulator TestWebKitAPI.GPUProcess.ExitsUnderMemoryPressureWebRTCCase --release --verbose

I have not been able to discover the regression point because my simulator does not want to run on the debug builds I am downloading.

[Ryan Haddad]

Can we disable this test for now? It is slowing down EWS.

[youenn fablet]

This seems iOS specific, so we should probably reenable it in MacOS.
And maybe split the test to better understand the issue.

[youenn fablet]

https://bugs.webkit.org/show_bug.cgi?id=238927

[youenn fablet]

After splitting the test, we can see that the failure is specific to audio capture. https://results.webkit.org/?suite=api-tests&suite=api-tests&suite=api-tests&test=TestWebKitAPI.GPUProcess.ExitsUnderMemoryPressureGetUserMediaAudioCase&test=TestWebKitAPI.GPUProcess.ExitsUnderMemoryPressureGetUserMediaVideoCase&test=TestWebKitAPI.GPUProcess.ExitsUnderMemoryPressureWebRTCCase
Let's rename this bug.

[youenn fablet]

Created attachment 458339 [details]
Patch

[EWS]

Committed r293425 (249985@main): <https://commits.webkit.org/249985@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 458339 [details].