[Webkit-unassigned] [Bug 261341] New: REGRESSION(266877 at main): [ macOS wk2 ] requestidlecallback/requestidlecallback-in-page-cache.html is a flaky text failure/timeout.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=261341

            Bug ID: 261341
           Summary: REGRESSION(266877 at main): [ macOS wk2 ]
                    requestidlecallback/requestidlecallback-in-page-cache.
                    html is a flaky text failure/timeout.
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Animations
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ben_schwartz at apple.com
                CC: dino at apple.com, graouts at apple.com, rniwa at webkit.org,
                    webkit-bot-watchers-bugzilla at group.apple.com,
                    webkit-bug-importer at group.apple.com

requestidlecallback/requestidlecallback-in-page-cache.html

This test is a flaky text failure/timeout on macOS wk2.

HISTORY:

https://results.webkit.org/?suite=layout-tests&test=requestidlecallback%2Frequestidlecallback-in-page-cache.html

TEXT DIFF:

 PASS event.persisted is true
 PASS logsA.length is 0
 PASS logsB.length is 0
-PASS logsA.length is 4
-PASS logsA.join(", ") is "A1, A2, A3, A4"
-PASS logsB.length is 3
-PASS logsB.join(", ") is "B1, B2, B3"
+FAIL logsA.length should be 4. Was 0.
+FAIL logsA.join(", ") should be A1, A2, A3, A4. Was .
+FAIL logsB.length should be 3. Was 0.
+FAIL logsB.join(", ") should be B1, B2, B3. Was .
 PASS successfullyParsed is true
+Some tests failed.

 TEST COMPLETE

DIFF URL:

https://build.webkit.org/results/Apple-Ventura-Release-WK2-Tests/266889@main%20(3150)/requestidlecallback/requestidlecallback-in-page-cache-pretty-diff.html

REPRODUCTION:

I was able to reproduce this issue on macOS Ventura (13.5, 22G74/arm64) ToT using the following command:

run-webkit-tests --verbose --clobber-old-results --iterations 10000 --child-processes 10 -f --exit-after-n-failures 1 requestidlecallback/requestidlecallback-in-page-cache.html

REGRESSION:

I was able to identify a regression point at 266877 at main, as this issue did not reproduce before then and changes at that point appear directly related to this issue.

NOTE:

This test is much more flaky in my local testing than on the bots.

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