JBoss crash After changing Kernel parameters

[asibrahim]

Hello guys,

This is my first time to post something on the community, hope that i will not annoy anyone.

My problem is that we have JBoss running on HP server using operation system HP-UX 11i v3, after changing these kernel parameters vx_ninode=40000 & vxfs_ifree_timelag=-1. I was not able to start the JBoss server by any means and get the below error. The JBoss version we are using is 5.1.0.GA

Thanks guys for help

[sfcoy]

Is that all that changed? Is it possible that the default thread stack size was changed as well?

[asibrahim]

Actually these 2 are the only kernel parameters that have been modified , I do not know if they might have impact on the thread stack size or not.

Do you think it is worth to change the thread stack size using the option -Xss?

Is it possible to be done during the JBoss start up?

Thanks for your quick reply.

Regards

Ahmed,

[sfcoy]

I'd be surprised if those kernel parameters had any impact on the stack size.

Do you have a backup of the previous sysctl.conf file? What happens if you rollback to the old one? Have you compared the old with the new?

What is the output of sysctl -a?

You could try adding the -Xss option in the bin/run.conf file to the line that sets up JAVA_OPTS, but that does not seem like the root cause. Normally we use that to reduce the default stack size, which can be pretty big (2M on Linux).

[asibrahim]

When rolling back these parameters the JBoss worked fine without any problems, i.e when the backup was restored the problem was solved.

I will get back to with these output of sysctl -a when i get it from the system admin.

Thanks again for your help.

Regards,

Ahmed