> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> I was curious if anybody knew of some software that
> tracked the memory
> and cpu usage of each servlet that was running on a Tomcat
> instance.
Unfortunately, as all the servlets run on a common JVM and using a common heap,
there is no way of tracking memory use reliably (unless you want to do
something slow and intrusive like using the debugger to trace references from
known application roots). You *might* be able to do something about tracking
something to do with CPU by thread, but remember that Tomcat shares threads
between all the servlets so you'd have to do this on a per-request basis. I
can't think of a way of persuading Java to hand over the information you'd need
even here, but better brains on this list might have some ideas.
In general, if you want to monitor the servlets independently, you'll have to
run 'em on independent JVMs.
- Peter
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