Bug 215392

Summary: [ macOS wk1 ] webaudio/oscillator-sawtooth.html is a flaky failure
Product: WebKit Reporter: Hector Lopez <hector_i_lopez>
Component: New BugsAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: cdumez, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Textual Diff
none
Expected audio
none
Actual audio none

Hector Lopez
Reported 2020-08-11 14:03:37 PDT
webaudio/oscillator-sawtooth.html Test is a flaky failure on macOS wk1. The first occurrence according to history is at r264962. History: https://results.webkit.org/?suite=layout-tests&test=webaudio%2Foscillator-sawtooth.html&limit=50000&platform=mac&flavor=wk1 Diff: Total differing samples: 176335 Percentage of differing samples: 99.963% Cumulative sample difference: 1520037270 Average sample difference: 8620.167692 Please see attachments
Attachments
Textual Diff (5.64 MB, text/plain)
2020-08-11 14:04 PDT, Hector Lopez 		no flags
Details
Expected audio (344.57 KB, audio/x-wav)
2020-08-11 14:05 PDT, Hector Lopez 		no flags
Details
Actual audio (344.57 KB, audio/x-wav)
2020-08-11 14:05 PDT, Hector Lopez 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Hector Lopez
Comment 1 2020-08-11 14:04:22 PDT
Created attachment 406416 [details] Textual Diff
Hector Lopez
Comment 2 2020-08-11 14:05:10 PDT
Created attachment 406417 [details] Expected audio
Hector Lopez
Comment 3 2020-08-11 14:05:47 PDT
Created attachment 406418 [details] Actual audio
Hector Lopez
Comment 4 2020-08-11 14:12:08 PDT
Test expectation while investigated: https://trac.webkit.org/changeset/265516/webkit
Radar WebKit Bug Importer
Comment 5 2020-08-11 15:10:13 PDT
<rdar://problem/66864936>
Chris Dumez
Comment 6 2020-08-12 11:44:16 PDT
Potential regression from http://trac.webkit.org/r264941.
Chris Dumez
Comment 7 2020-08-13 13:12:10 PDT
I am unable to reproduce currently. I have been looking at <http://trac.webkit.org/r264941> for a while now and have no idea how it could have changed the behavior here, especially in a way that is flaky...
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