Bug 193935 – Layout Test performance-api/performance-observer-callback-after-gc.html is flaky

• Component: Tools / Tests
• Status: RESOLVED DUPLICATE

[Shawn Roberts]

The following layout test is flaky on Mojave Debug

performance-api/performance-observer-callback-after-gc.html

Probable cause:

Test is flaky on every debug build I have tested from 2299992 to current. Causing failures approximately 1/500 to 4/500 of the time using the following command: 

run-webkit-tests --root debug- performance-api/performance-observer-callback-after-gc.html --iterations 500 -f --debug

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=performance-api%2Fperformance-observer-callback-after-gc.html

Diff:

--- /Volumes/Data/slave/mojave-debug-tests-wk2/build/layout-test-results/performance-api/performance-observer-callback-after-gc-expected.txt
+++ /Volumes/Data/slave/mojave-debug-tests-wk2/build/layout-test-results/performance-api/performance-observer-callback-after-gc-actual.txt
@@ -3,9 +3,8 @@
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
-PerformanceObserver callback fired: 1 entries
+PerformanceObserver callback fired: 3 entries
 PASS mark1
-PerformanceObserver callback fired: 2 entries
 PASS mark2
 PASS mark3
 PASS successfullyParsed is true

[Alexey Proskuryakov]

*** This bug has been marked as a duplicate of bug 191041 ***