3 Replies Latest reply on Jul 7, 2008 10:36 AM by Brian Stansberry

    Unknown Multiple Jboss Proccesses

    Ido Weiss Newbie

      Can it be that a JBoss instance will launch other JBoss instances? Can such a behavior be related to JBoss clustering?
      We observed JBoss duplicate processes on our system running JBoss 4.2.0.GA on Sun T5220 machines with Solaris 10.
      After we run JBoss for several hours we sometime see several JBoss processes running instead of only one, although we launch only one JBoss instance (we made sure by adding logging to the JBoss run.sh launch script). Also the new duplicate JBoss processes have the parent pid of the original JBoss process (the original JBoss process has a parent pid of it's run.sh process). The JBoss processes have the same parameters as the original JBoss process and take the same amount of memory.

      Here's an example of running the ps -ef | grep run.sh command:
      anauser 16082 1 0 12:45:50 ? 0:00 /bin/sh /export/home/ana41/jboss/bin/run.sh -b 0.0.0.0
      anauser 16093 16082 2 12:45:50 ? 960:40 /export/home/ana41/java/bin/java -Dprogram.name=run.sh -server -Xms2048m -Xmx20
      anauser 5623 16093 0 00:48:39 ? 0:00 /export/home/ana41/java/bin/java -Dprogram.name=run.sh -server -Xms2048m -Xmx20
      anauser 5627 16093 0 00:48:43 ? 0:00 /export/home/ana41/java/bin/java -Dprogram.name=run.sh -server -Xms2048m -Xmx20
      anauser 5590 16093 0 00:48:31 ? 0:00 /export/home/ana41/java/bin/java -Dprogram.name=run.sh -server -Xms2048m -Xmx20

      We also see that the Total Running time of these duplicate processes are almost always 0. We saw only once a duplicate JBoss process with a running time of 2, and then that process disappeared. I have a theory that maybe these Processes are stuck because their output stream are not read or directed to anywhere. We still have no idea what launched these processes.

      Will appreciate any advise.

      Thanks,
      Ido