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Jboss server (VM) occasional have a CPU spike at 100%. It is used for SSO. What does the attached java error mean?

Posted on 2013-11-01
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Last Modified: 2013-11-22
We have a VM where the CPU occasionally spikes to 100%. It is a Jboss server and is used for business (background checks through our website). I belive it is also used for Single Sign on. When the CPU spikes at 100%, our customers complain that they cannot login, and get some timestamp error. In looking at jboss logs (attached), this may explain what may have caused the high CPU spike in the system. I see this same log each time the CPU spikes to 100%, however, I am not familiar with Jboss or Apache enough to suggest any fix for it. I’ve brought it up to the attention of our programmer/developer, but all they can say is they will take a look at it. However, they have not came up with any fixes, and I’m left with occasionally troubleshooting this problem. I would always have to stop/start the Jboss service to fix it. I’m a Windows guy. In looking at Windows log, it would not indicate anything on the OS side that would cause this spike. In looking at it from a Windows OS perspective, I noticed that this server has not been patched since 7/9/12. Not saying that patching will resolve the issue but it’s worth a shot. I just want to be able to justify why I think patching will help in some way. Has anyone ever encounter this problem, or know anything about the error message that will help alleviate this matter?

OS: W2K8 R2
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Question by:ksol
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by:girionis
ID: 39619047
What is the com.abc.j2ee.cas.service.impl.BaseService? Is it a library or something that your team has wrote? Can you post the full log?
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by:ksol
ID: 39619365
The full log is attached. It is a log from a long time ago. Just so you know, com.abc.j2ee.cas.service is something that our programmers wrote. It is something within our company. Again, Im not a programmer, so I wouldnt know. Hoping you can help by looking at the logs, as to why the CPU spiked.
server.log.2013-08-21-1000.txt
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girionis earned 1000 total points
ID: 39620826
Since the CPU spike happens when the attached error occurs then I can infer that the problem is the NullPointerException. Something happens that makes the server utilise more CPU. I'd guess it's looking for some configuration that's missing (hence the npe). Since the service is written by your team I'd say ask them to investigate the problem.
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