[jboss-user] [Performance Tuning] - max heap size on 64 bit red hat linux 5

[Zippy Zeppoli]

Zippy Zeppoli [https://community.jboss.org/people/zippyzeppoli] created the discussion

"max heap size on 64 bit red hat linux 5"

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Hi everyone,
I searched the Red Hat and Oracle JVM docs (sun jvm docs gone) and I wasn't able to find the answer to my question.
I am wondering what the real max heap size is on RHEL 5 64 bit for JBoss AS 5?
My understanding is that on a 64 bit process the memory references use a good deal of the heap space.
For example, if I have a 10G max heap, it's not really going to use all of that space right?
About what would it be? And whats the max limit on a 64 bit system?


Thanks in advance.
Z
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