[Webkit-unassigned] [Bug 25503] Add instrumentation framework to WebCore

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=25503





------- Comment #5 from jamesr at google.com  2009-05-11 15:10 PDT -------
(In reply to comment #2)
> Some basic comments.  The names of the client methods don't really mesh well
> with our current idiom for client methods.  For instance, instead of
> "layoutStarting", we would use "didStartLayout".
> 
> How does this effect the performance of the various perf tests we run? 
> 

The performance of the instrumentation depends pretty much entirely on how much
work is done by the AnalysisClient implementation.  In this case, since very
little work is done by the DRT implementation there is no measurable
performance impact as determined by running SunSpider, the layout tests in
LayoutTests/fast, or a mozilla page cycler with some popular websites.  I don't
have access to IBench.


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