JVM memory limit

Hi,
We have an application under windows 2000 that uses IBM JVM 3.0.
With the IBM JVM we are able to use up to 3GO of memory for java ( mx parameter).
Due to the DST change we upgraded the JVM to SUN JVM 1.3.1_19.
However with SUN JVM the max memory is 1.7GO any value greater than 1.7G gives an error :
The question is Why SUN JVM is limited and not the IBM JVM ???
N.B with have 6GO of RAM on the windows 2000 server and windows is booted with /pae option to allow windows to use more than 4Go of memory.
Thanks,

Non-heap memory is the permanent generation and code
cache.
If the heap is ok (check via -verbosegc or something
like HAT that it is not increasing) then causes of
large non-heap memory can be NIO, very large numbers
of jar files, having no swap space available and JNI.... oh and thread stack usage since every thread consumes non-heap memory.

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Customer Centric Engineering
"Ricardo" <[email protected]> wrote in message
news:3fe1da9b$[email protected]..
Hi Support Team,
I need know if exists any jrockit 7.0 memory limitation in windows 2000advanced server. I'm using 4GT RAM Tuning Feature into a machine with 4 GB
in RAM.
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     Here is some query about JVM performance in case of JVM memory usage is high.
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     No, in worst scenario memory used by JVM is 2GB.Ok.
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seige wrote:
... CentOS 5.2.
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nicolasmichael wrote:
Hi,
the "memory limitation" does not have anything to do with garbage collection, but with the address space your operating system provides. On a 32bit operating system, your virtual address space is limited to <= 4 GB, depending on your operating system (for example 1.something GB on Windows and 3.something GB on Solaris). No.
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[http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4358809]

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JVM memory limit

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