> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 
> Subject: Solaris 10 Tomcat performance maxes out at 2 threads
> 
> We see throughput increase when we go from 1 client thread to 
> 2 client threads, but when we run more than 2 threads we see 
> no additional throughput.

First off, does your client support more than two connections to the
same server?  If your client is an untweaked version of IE or Firefox,
it doesn't.

Secondly, you may well have some contended resource in your application
that limits concurrency, such as number of data base connections, data
base record locks, overly coarse synchronization, etc.  Try profiling
the app and see where threads are getting stuck.  Also might try
cranking up the number of concurrent client requests and running jstack
(a JDK tool) against Tomcat to see where the request processing threads
are sitting.

 - Chuck


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