Also, keep
http://jakarta.apache.org/jmeter/usermanual/best-practices.html#lean_mean in
mind. When greater number of threads lead to performance issues because
the JVM has heap allocation trouble, you may want to optimize your test
plan for size first. Huge test plans *will* bring any Jmeter instance to
its knees.

Cheers,
Felix

On 07/21/2010 11:39 AM, chaitanya bhatt wrote:
> ...
> Between, apart from System Wide resource utilization, are you monitoring the
> JVM heap as well? if not then I recommend you to do it. Use JConsole and
> monitor the JVM heap. Ensure that new gen and tenured gen areas of the jvm
> heap are not choking. If you see thread thrashing or any abnormal behavior
> inside the heap then you might have to re-configure the heap before loading
> up additional threads.

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