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I have optimized my php/javascript web app to be fairly fast, but an analysis with the google speed tracer shows a 230ms garbage collection phase. What is it, as pertains to the speed tracer results, and what are some guidelines in improving it?
If you hold on to the objects, then the garbage collection phase will at least be delayed for it to matter, page is already rendered etc. Browser will do a garbage collect if for some reason in your Javascript code you are vacating objects, assigning objects to null, or replacing objects.