[Wrapper-user] jvm hung and high CPU usage with wrapper

[hhale21 <hh...@ya...>]

Hello, 

I am using JSW 3.2.3.  We are experiencing some odd behaviour of our servers
on single CPU/core Windows XP/SP3 (32bit) computers.  I am looking for ways
to try and troubleshoot this problem. 

There are 3 different servers running as windows services using the
wrapper.exe. 
On a regular basis 1 or more of these servers is getting jvm hung messages
and are being started.
This seems only to occur on single core/CPU computers.  Have not observed
this on multi core CPUs.  I have wrapper.debug=true in the conf files. I
don't seen anything in the log files other that logging for the application
stops completly for 30 secs (default wrapper ping value) before the jvm is
restarted.  

I tried starting one of the servers using the wrapper.exe as regular process
(as opposed to a service). The hang does not occur however one of the
threads in the application is using almost 100% of the CPU constantly. I am
using Process Explorer inspect the process.   JVM has not occurred when not
run as service. 

When I run the server without the wrapper.exe,  I don't have the thread that
uses 100% of the CPU and so far the server has run with out any issues. 

Just looking for some feedback on how to troubleshoot this problem. 

Thanks
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