Layout Test fast/events/keydown-1.html is flaky on mac-wk1 debug

• Component: UI Events
• Status: RESOLVED DUPLICATE

[Ryan Haddad]

Layout Test fast/events/keydown-1.html is flaky on mac-wk1

Most recent failing run:
<https://build.webkit.org/results/Apple%20El%20Capitan%20Debug%20WK1%20(Tests)/r196640%20(2919)/results.html>

Flakiness dashboard:
<https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Fevents%2Fkeydown-1.html>

--- /Volumes/Data/slave/elcapitan-debug-tests-wk1/build/layout-test-results/fast/events/keydown-1-expected.txt
+++ /Volumes/Data/slave/elcapitan-debug-tests-wk1/build/layout-test-results/fast/events/keydown-1-actual.txt
@@ -3,4 +3,5 @@
 
 keydown in subframe: [object KeyboardEvent]
 keydown in subframe: [object KeyboardEvent]
-This sentence should not end with a period
+keydown in mainframe: [object KeyboardEvent]
+

[Alexey Proskuryakov]

I could reproduce under heavy CPU load, running 40 parallel processes on a MacBook Pro:

run-webkit-tests fast/events/keydown-1.html --repeat 1000 -v --no-build -1 -f --child-processes=40 --no-show

[Alexey Proskuryakov]

Speculative fix in bug 207785.

*** This bug has been marked as a duplicate of bug 207785 ***