Bug 240081 – [ iOS ][ macOS Debug wk1 ] webaudio/AudioBuffer/huge-buffer.html is a flaky timeout

• Status: RESOLVED
• Resolution: CONFIGURATION CHANGED
• Component: New Bugs

[Karl Rackler]

Description:
webaudio/AudioBuffer/huge-buffer.html

The first timeout that I saw on the dashboard for iOS was 3/24/2022 at r291794. The first timeout that I saw on the dashboard for Big Sur was 2/15/2022 at r289876 and the first timeout that I saw on the dashboard for Monterey was 3/17/2022 at r291422, but neither appear relevant to causing this issue.   This test seems to have been flaky since the start. 

History:
https://results.webkit.org/?suite=layout-tests&test=webaudio%2FAudioBuffer%2Fhuge-buffer.html&platform=ios&platform=mac&limit=50000

Diff:
--- /Volumes/Data/worker/ios-simulator-15-release-gpuprocess-tests-wk2/build/layout-test-results/webaudio/AudioBuffer/huge-buffer-expected.txt
+++ /Volumes/Data/worker/ios-simulator-15-release-gpuprocess-tests-wk2/build/layout-test-results/webaudio/AudioBuffer/huge-buffer-actual.txt
@@ -1,3 +1,5 @@
+FAIL: Timed out waiting for notifyDone to be called
+
 
 PASS # AUDIT TASK RUNNER STARTED.
 PASS Executing "huge buffer"

[Radar WebKit Bug Importer]

<rdar://problem/92752803>

[Karl Rackler]

REPRODUCTION STEPS
I can reproduce this on ToT r293782

Command: 
run-webkit-tests --root 293782 --clobber-old-results --iterations 250 --exit-after-n-crashes-or-timeouts 1 --no-retry-failures --force -f webaudio/AudioBuffer/huge-buffer.html

Result:  
Regressions: Unexpected timeouts (1)
  webaudio/AudioBuffer/huge-buffer.html [ Timeout ]

[Karl Rackler]

I have marked this test as a flaky timeout while this issue is investigated.

[Karl Rackler]

Pull request: https://github.com/WebKit/WebKit/pull/507

[EWS]

Test gardening commit r293796 (250270@main): <https://commits.webkit.org/250270@main>

Reviewed commits have been landed. Closing PR #507 and removing active labels.

[Chris Dumez]

Looks like just a Slow test in Debug, should probably be marked as [Slow] instead of flaky?

[Karl Rackler]

I have marked this test as Slow while this issue is investigated.

[Karl Rackler]

Pull request: https://github.com/WebKit/WebKit/pull/588

[EWS]

Test gardening commit r294052 (250458@main): <https://commits.webkit.org/250458@main>

Reviewed commits have been landed. Closing PR #588 and removing active labels.

[Karl Rackler]

Marking the test as Slow has resulted in the tests passing consistently.

History: 
https://results.webkit.org/?suite=layout-tests&test=webaudio%2FAudioBuffer%2Fhuge-buffer.html&platform=ios&platform=mac&limit=50000

[Karl Rackler]

Verified with Eric that the test can run slow and marking the test as slow has resolved the issue.