Bug 59796

Summary: Firefox is twice as fast as WebKit on some selector matching tests
Product: WebKit Reporter: Simon Fraser (smfr) <simon.fraser>
Component: CSSAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: eae, koivisto, phiw2, simon.fraser
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: PC   
OS: OS X 10.5   
URL: http://scope.bitbucket.org/tests/selector-matching-performance/index.html
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Description Flags
Screenshot of results (FF on left) none

Simon Fraser (smfr)
Reported 2011-04-29 08:33:26 PDT
Created attachment 91687 [details] Screenshot of results (FF on left) On the test at http://scope.bitbucket.org/tests/selector-matching-performance/index.html Firefox is much faster on some tests. I compared FF 4 with WebKit nightly r84622
Attachments
Screenshot of results (FF on left) (323.92 KB, image/png)
2011-04-29 08:33 PDT, Simon Fraser (smfr) 		no flags
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Antti Koivisto
Comment 1 2011-04-30 07:27:07 PDT
Yeah, attribute selectors take a very slow path. They are not that common though. The test setup is interesting, the current test content less so. No descendant and child selectors at all...
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