David Rees schrieb: > On Tue, October 7, 2003 1at 1:59 am, Volker sent the following > > Following problem can be recognized even if the tomcat process is not in > > sbwait mode: > > > > 1) Sending a -QUIT signal to the tomcat process does not stop the process. > > A -QUIT will not shut down Tomcat, but cause the JVM to dump a stack trace > to stdout of all threads. This will be useful when the process hangs up. > If the process is not responding to the -QUIT command, the JVM has hung up or > you have a lot of threads stuck in a tight loop!
Hi Dave, I run the jvm in green mode (recommended by John from Volano for Blackdown Java under FreeBSD!). So the problem should not derive from too many threads! Sending the QUIT-signal does not show any result because stdout is the terminal and that one does not print out anything when I send a -QUIT. It is important to emphasize that the process does not show any reaction related to a -QUIT even when tomcat is running correctly. My original problem is that tomcat hangs up after a while (in that case nothing can be done with signals etc.). But what I wanted to explain in my last posting: Even when tomcat is running correctly (handling the servlet requests) you cannot stop it with shutdown.sh or -QUIT. Shutdown.sh only makes the CPU% increase over 90% and nothing does work anymore. But the tomcat process still is in memory. Only a kill -9 helps. > > > 2) Using shutdown.sh and -QUIT show up the same result: tomcat process > > still stays in memory but suddenly the CPU value increases about over 90%. > > > > Only a kill -9 stops the process! > > > > With tomcat 3.x I did not have such a problem and I could shutdown tomcat > > without any problems. > > Without knowing if and where Tomcat is hung up by reviewing the stack > dump, we won't be able to get much further. Like mentioned above: -QUIT does NOT produce any stack dump on the stdout! Thanks Volker > > > -Dave > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
