> From: Leon Rosenberg [mailto:[EMAIL PROTECTED]
> Subject: jvm cowardly refuses to print a thread dump
>
> we were unable to create a thread dump (kill -QUIT pid was just
> ignored by the jvm).

That's ugly.  Sounds like either the OS failed to deliver the signal, or the 
JVM is locked up internally (probably the latter).  I presume you've looked at 
the logs and found nothing of interest.

Can you launch JConsole on the same machine to poke around in the Tomcat JVM?  
(My suspicion is no, if a signal doesn't penetrate.)  It wouldn't impact 
performance much if you brought up a JConsole window when you start Tomcat and 
just let it sit until the hang.

Any indication of high heap usage before the hang?  Does running with 
-verbose:gc show anything?

 - Chuck


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