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From "Caldarale, Charles R" <Chuck.Caldar...@unisys.com>
Subject RE: unable to set MaxPermSize past 128MB
Date Mon, 06 Feb 2012 04:19:32 GMT
> From: David Dabbs [mailto:dmdabbs@gmail.com] 
> Subject: RE: unable to set MaxPermSize past 128MB

> > I just upgraded to 6.0.35 running on Win2K3 32 bit platform. 

> I believe you need to specify
>    -XX:MaxPermSize=256m
> and not 
>    -XX:MaxPermSize:256m

Even when the OP gets the syntax right, it's extremely unlikely that the stated combination
of heap and PermGen size will be available on a 32-bit Windows platform.  The sum of -Xmx
and MaxPermSize, plus code, stacks, non-Java heap, etc., must all fit within the virtual space
of the process, which is normally 2 MB.  The values will have to be experimented with to find
exactly what will work and what won't.  The total available space will also vary with the
exact JVM version and sometimes even which patches have been applied to Windows.

 - Chuck


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