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From "Leon Rosenberg" <>
Subject jvm cowardly refuses to print a thread dump
Date Mon, 01 Dec 2008 14:17:37 GMT

we have recently had some hangups of tomcat (5.5.20 on 1.6.05 on linux
2.6.18). The tomcats just stoped replying (all connections timeouted),
but the strange thing was, that
we were unable to create a thread dump (kill -QUIT pid was just
ignored by the jvm).
The machines were idling, no high cpu usage, no iowait, current/busy
threads in tomcat prior to the hangup quite low (25/10) and nothing
else to be found.

Anyone seen something similar before or knows the direction to dig
(special wink to Chuck) ?


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