Bug 139634

Summary:	Several fast/selectors tests are very slow in debug
Product:	WebKit	Reporter:	Alexey Proskuryakov <ap>
Component:	CSS	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	benjamin, cdumez
Priority:	P2
Version:	528+ (Nightly build)
Hardware:	Unspecified
OS:	Unspecified
See Also:	https://bugs.webkit.org/show_bug.cgi?id=61932 https://bugs.webkit.org/show_bug.cgi?id=221308 https://bugs.webkit.org/show_bug.cgi?id=230988

Description Alexey Proskuryakov 2014-12-14 20:58:16 PST

These tests are so slow that that they frequently time out on bots an locally, especially when other tests run in parallel using hyper-threading.

fast/selectors/matches-backtracking.html took 44.6 seconds
fast/selectors/nth-child-of-register-requirement.html took 24.3 seconds
fast/selectors/not-backtracking.html took 23.5 seconds

This one may or may not have the same root cause, I imagine that jquery does a lot of CSS selector matching.

jquery/manipulation.html took 23.0 seconds

Comment 1 Alexey Proskuryakov 2014-12-14 21:03:32 PST

Marked as slow in <http://trac.webkit.org/r177271>. This may not fully help, as some ports appear to detect a timeout at another layer, and report the test as "failing".