I'll get that checked when it next happens (it's doing it daily at the moment sometime several times).
We've already tried to match the events with the activity on the parent JVM, haven't found anything yet though (haven't given up on this). One thing we did notice is higher CPU usage on the main JVM. We're not sure yet if this happens before or after is creates the additional JVMs, or if that's just due to high load on the application. We're monitoring that as well. -----Original Message----- From: Tobias Crefeld [mailto:t...@cataneo.eu] Sent: 09 September 2011 11:11 To: users@tomcat.apache.org Subject: Re: Tomcat 5.5.27 - Solaris 10 - Tomcat process starts additional copies of itself with only 1 thread and no CPU Am Fri, 9 Sep 2011 09:54:36 +0100 schrieb "Dave Stubbs" <d...@stubbs.uk.com>: > When we list the system tasks we see that the ghost process PPID is > the same as the PID of the still running main tomcat instance. Here is > list of what happened when it wasn't picked up for a while. Obviously the "parent"-JVM itself starts the other JVMs, so it must be an application issue. Do the "child-JVMs" stop when 21115 shuts down? Do the child-JVMs terminate on "normal" signals like -SIGTERM? I would try to log the exact time, when these additional JVM are being started and compare these with things that were happening on the "parent"-Tomcat - maybe you find a application dependency that way. Just an idea: Maybe the parent-JVM gets a signal to restart itself that isn't handled correct? ( http://publib.boulder.ibm.com/infocenter/realtime/v1r0/topic/com.ibm.rt.doc. 10/user/signals.html - sorry, but haven't found a source for Sun-JDK instantly) Regards, Tobias. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
