Use this URL instead http://developer.apple.com/tools/sharkoptimize.html
I just realized that there is no need for me to test your patch. You can install the Apple CHUD tools and run Shark yourself. All of the directions are on this page:
http://developer.apple.com/tools/performance/optimizingwithsystemtrace.html
Save the session and post it online somewhere and one of us will have a look.