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From Josh Gooding <josh.good...@gmail.com>
Subject Re: unable to set MaxPermSize past 128MB
Date Mon, 06 Feb 2012 04:32:00 GMT
your kidding me right?  Why is tweaking the JVM for this so hard?

On Sun, Feb 5, 2012 at 11:19 PM, Caldarale, Charles R <
Chuck.Caldarale@unisys.com> wrote:

> > 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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