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From Mark Thomas <ma...@apache.org>
Subject Re: Tomcat thread blocking
Date Wed, 24 Sep 2008 09:27:36 GMT
Darren Kukulka wrote:
> Hi,
> 
> I've recently observed a scenario in Tomcat 6.0.13 64-bit under SUN JDK
> 1.6_03 (x64 Windows platform), where a large number of threads show a
> status of BLOCKED.
> 
> Can someone please advise the easiest and most effective way of helping
> identify the original cause of the block?....or have I just opened up a
> can of worms?!
Get 2 or 3 thread dumps ~20secs apart and analyse them.

> The behaviour is not something I can replicate so I need a method for in
> situ investigation, before I have to restart Tomcat to restore service
> (after a while Tomcat consumes too much CPU and becomes unresponsive)
Thread dumps can be generated whilst Tomcat is running.

Mark


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