visualgc with remote JBoss

kieranshaw Nov 21, 2005 7:25 AM

I've recently upgraded to Java 5 and JBoss 3.2.7 and want to use visualgc to track down some GC problems I have been having.

I can use visualgc on a local install of JBoss with:

visualgc 3456

That works fine. As a test to see if I can get it to work on a remote jboss, I tried this:

visualgc 3456@localhost

RMI Registry not available at localhost:1099
non-JRMP server at remote endpoint

This is a completely clean install of JBoss that is definately running under a Java 5 JDK and has port 1099 open. Any ideas?

1. Re: visualgc with remote JBoss

oglueck Nov 21, 2005 9:08 AM (in response to kieranshaw)

JBoss usually binds its services to only one network interface. You can check on which interface JBoss listens with:
(Linux) netstat -ant
(Win32) netstat -an -p tcp

You should get something like:

TCP 127.0.0.1:1098 0.0.0.0:0 LISTENING
TCP 127.0.0.1:1099 0.0.0.0:0 LISTENING

which in this case means JBoss only listens on the local loopback interface but not on the public IP address of that machine.
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2. Re: visualgc with remote JBoss

kieranshaw Nov 22, 2005 4:29 AM (in response to kieranshaw)

The ports are definately open and I can tell from Ethereal that it is connecting and getting an RMI reply from JBoss.
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3. Re: visualgc with remote JBoss

starksm64 Nov 22, 2005 11:22 AM (in response to kieranshaw)

1099 is our naming service port. We don't run an rmi registry, so you need to see what instructions visualgc (which I have not used) has for configurating its use.
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4. Re: visualgc with remote JBoss

kieranshaw Nov 22, 2005 11:28 AM (in response to kieranshaw)

Thanks for that Scott. I'll see what I can do with a seperate RMI Registry.

I'll be sure to post back info here if/when I work it out because the visualgc tool is very handy.
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5. Re: visualgc with remote JBoss

kieranshaw Nov 24, 2005 10:19 AM (in response to kieranshaw)

Once you pointed out that JBoss isn't running an RMI Registry, it was quite easy. I've put up an account here:
http://blogs.warwick.ac.uk/kieranshaw/entry/remote_visualgc_for/
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