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Ruby
Percentage of time spent in method dispatch?
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<blockquote data-quote="John Lam" data-source="post: 4522568"><p>I'd be interested in doing some experiments with DynamicMethods in the</p><p>CLR to see what kind of performance gains can happen with method</p><p>dispatch. And direct method dispatch in the CLR is *very* fast, if we</p><p>consider that each parameter is a boxed object reference (4 bytes) and</p><p>the actuall call is a call indirect instruction. Dealing with closures</p><p>is a bit more problematic though, and making that go fast could be</p><p>difficult.</p><p></p><p>It's also fairly straightforward to substitute one dynamic method for</p><p>another one when a cache invalidation event occurs. It would be very</p><p>interesting to study the existing implementation's method cache to see</p><p>what the triggers for cache invalidation look like ...</p><p></p><p>Thanks for the input!</p><p>-John</p><p><a href="http://www.iunknown.com">http://www.iunknown.com</a></p></blockquote><p></p>
[QUOTE="John Lam, post: 4522568"] I'd be interested in doing some experiments with DynamicMethods in the CLR to see what kind of performance gains can happen with method dispatch. And direct method dispatch in the CLR is *very* fast, if we consider that each parameter is a boxed object reference (4 bytes) and the actuall call is a call indirect instruction. Dealing with closures is a bit more problematic though, and making that go fast could be difficult. It's also fairly straightforward to substitute one dynamic method for another one when a cache invalidation event occurs. It would be very interesting to study the existing implementation's method cache to see what the triggers for cache invalidation look like ... Thanks for the input! -John [URL]http://www.iunknown.com[/URL] [/QUOTE]
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