Bug 143379

Summary: fast/fixed-layout/fixed-layout.html is flaky
Product: WebKit Reporter: Alexey Proskuryakov <ap>
Component: Tools / TestsAssignee: Tim Horton <thorton>
Status: RESOLVED FIXED    
Severity: Normal CC: ap, commit-queue, jfernandez, ossy, rego, simon.fraser, svillar, thorton
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
See Also: https://bugs.webkit.org/show_bug.cgi?id=143420
Attachments:
Description Flags
Patch simon.fraser: review+

Alexey Proskuryakov
Reported 2015-04-03 09:33:03 PDT
fast/fixed-layout/fixed-layout.html is flaky on EWS and Mac bots, seems to always fail elsewhere, and even to break subsequent tests. http://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=fast%2Ffixed-layout%2Ffixed-layout.html
Attachments
Patch (3.43 KB, patch)
2015-04-03 14:42 PDT, Tim Horton 		simon.fraser: review+
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Alexey Proskuryakov
Comment 1 2015-04-03 09:35:52 PDT
See also http://trac.webkit.org/changeset/182311 Not sure if we should roll out <http://trac.webkit.org/changeset/182307>. I'm going to mark the test as flaky in root test expectations, keep it skipped where it's skipped, and wait to Tim to weigh in.
Alexey Proskuryakov
Comment 2 2015-04-03 09:39:02 PDT
Added an expectation in r182319.
Tim Horton
Comment 3 2015-04-03 12:55:43 PDT
run-webkit-tests --repeat-each=100 --fully-parallel fast/fixed-layout reproduces the flakiness quite reliably for me
Tim Horton
Comment 4 2015-04-03 14:42:27 PDT
Created attachment 250098 [details] Patch
Tim Horton
Comment 5 2015-04-03 17:09:00 PDT
http://trac.webkit.org/changeset/182339
Alexey Proskuryakov
Comment 6 2015-04-03 21:54:06 PDT
On Windows, the test started to time out after this patch, and it seems to have started to crash on Gtk: https://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Ffixed-layout%2Ffixed-layout.html
Tim Horton
Comment 7 2015-04-03 23:39:19 PDT
(In reply to comment #6) > On Windows, the test started to time out after this patch, and it seems to > have started to crash on Gtk: > > https://webkit-test-results.appspot.com/dashboards/flakiness_dashboard. > html#showAllRuns=true&tests=fast%2Ffixed-layout%2Ffixed-layout.html GTK makes "fixed layout" mean a lot more than it should, and in really bad ways (randomly setting prefs in random places, etc.), so I've mostly been disregarding them. Should probably skip the test there. Windows is more interesting.
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