Le 4 oct. 2012 14:38, "Caldarale, Charles R" <chuck.caldar...@unisys.com> a écrit : > > > From: Kirill Kireyev [mailto:kir...@instagrok.com] > > Subject: Re: high CPU usage on tomcat 7 > > > Perhaps what I need is to have the JVM do garbage collections more > > frequently, so that they don't become a huge CPU-hogging ordeals > > when they do happen. > > That's not how it works. The amount of time spent in a GC operation is dependent almost entirely on the number of live objects in the heap, not the amount of space being reclaimed. Having a smaller heap might improve your cache hit rate, but it will have little effect on the time used by GC. > > It is highly likely that your webapps have a memory leak. You need to use a profiler and find out what's eating up all that memory. If you set the heap size to a smaller value, you should be able to provoke the situation earlier, but it certainly won't fix it. +1
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