[jboss-user] [Installation, Configuration & DEPLOYMENT] - Multiple Jboss Proccesses

[rafael liu]

Interesting. My guess:

I've already heard about threading in Solaris, but never saw it, as I now
Solaris have a lightweight threads and Java can use them, so threads started
may be seem in ps. That must be it, threads are being launched. I may be
Tomcat, how many processes are started? Tomcat uses a Thread Pool, so check
server.xml and see if the numbers (e.g. max, min) match what you see.
(suposing your app doesn't use threads itself)

On Wed, Jul 2, 2008 at 9:50 AM, idweiss <do-not-reply at jboss.com> wrote:

> Can it be that a JBoss instance will launch other JBoss instances?
> We observed JBoss duplicate processes on our system running JBoss 4.2.0.GAon 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
>
> View the original post :
> http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4162048#4162048
>
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