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From Yuval Perlov <>
Subject Re: Tomcat problem on a multiple CPU system
Date Sun, 04 May 2008 21:34:37 GMT
Perhaps you have some contention between the threads or intensive IO.

Can you elaborate a little about the servlet job? Time it takes, kind  
of processing it does, etc.

Yuval Perlov

On May 4, 2008, at 11:21 PM, Gilbert, Antoine wrote:


I have a 2x quad core (8 cpu units) server.

If I start a java program and this one is launching (at the same time) 8
thread doing some CPU intensive jobs, all the CPU are used at 100%, and
that's what I'm expecting..

But, if I am using tomcat, and I call a servlet 8 times to process these
8 jobs, it take longer to execute these same 8 jobs and all the CPU are
not used at 100%, it's more like 30%...

Any idea about this problem or behavior ? I'm using Tomcat 5.5.17,
windows, JDK 1.6


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