Java process eating CPU; Why?

Posted by Camran on Server Fault See other posts from Server Fault or by Camran
Published on 2011-01-04T18:50:20Z Indexed on 2011/01/04 18:55 UTC
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linux

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apache

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server

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security

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java

I have a Linux server which I have installed Java on.

Sometimes, and only sometimes when a large nr of visitors visit my website, the site hangs.

When I open the terminal and enter the "top" command to see whats going on, I can see that "Java" process is eating CPU! Like 400%.

I have also tried ps aux command, and can see that the command is from usr/bin/java

I have little experience in troubleshooting this kind of things, so I turn to you guys for help.

I have a java container installed (Jetty) which I must have in order to use SOLR (search engine) which is integrated into my website.

I can start and stop SOLR by:

  etc/init.d/solr stop

But this didn't remove the java process from the "Top" command. Still java was eating 400% CPU.

Is there other methods to restart java only?

This has happened twice to me, and each time I have now restarted my entire servers and everithing is fine.

If you need more input let me know!

Thanks

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