[Webkit-unassigned] [Bug 17770] JavaScript execution is dramatically slower while Drosera is attached

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=17770





------- Comment #4 from aroben at apple.com  2008-04-17 10:52 PDT -------
While a lot of the slowness surely comes from the cross-process calls, some of
it definitely comes from WebCore/JSC's debugger infrastructure.

Adding a single no-op JavaScriptDebugListener to WebCore's
JavaScriptDebugServer caused SunSpider to be 2.42x as slow. Here are the actual
results:

Without a JavaScriptDebugListener:

http://webkit.decenturl.com/sunspider-without-javascriptdebuglis

With a JavaScriptDebugListener:

http://webkit.decenturl.com/sunspider-with-a-javascriptdebuglist


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