[jboss-user] [Beginner's Corner] - Re: CPU & RAM Usage API in Java or JBoss

Wolf-Dieter Fink do-not-reply at jboss.com
Thu Dec 2 02:23:05 EST 2010

Wolf-Dieter Fink [http://community.jboss.org/people/wdfink] created the discussion

"Re: CPU & RAM Usage API in Java or JBoss"

To view the discussion, visit: http://community.jboss.org/message/573995#573995

It wil be difficult and depends to the application, JVM implementation and OS.
If you have no system partitioning the JVM might take 100% CPU.
RAM depends to the OS and the used 32/64JVM.
With 32Bit Windows you are restricted to ~2GB
In case of 64Bit Unix the JVM might accept ~3,6GB Heap setting (depends on the OS) witch is about 4GB in total.

The RAM usage is an addition of Heap(-Xmx) PermGenSpace (-XX:MaxPermSize) and the reserved area for Threads.

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