[rules-users] What is contract between Heap Size and PermGen space

[Swindells, Thomas]

This is a pure java question not a drools question - I'd suggest you ask the experts on one of the java or jboss mailing lists!
One question I'd have is whether you are running a 32 bit or 64bit jvm - if you are running a 32bit jvm then you will have limits on how much memory in total a process can address (including additional memory needed for the actual jvm, hotspot compiler etc).
Thomas

> -----Original Message-----
> From: rules-users-bounces at lists.jboss.org [mailto:rules-users-
> bounces at lists.jboss.org] On Behalf Of Satyendra Sharma
> Sent: 09 June 2011 11:05
> To: rules-users at lists.jboss.org
> Subject: [rules-users] What is contract between Heap Size and PermGen
> space
>
> In my server Ram is 16GB but when
>
> 1. I tried to set max heap size to 2048MB in run.bat file and when started
> jboss server it thrown exception as "Could not reserve enough space for
> object heap" it accepted max 1336 mb.
>
>
> 2. and also  JBoss server did not accept more than 128MB PermGen space but
> when I reduce the heap size from 1336 to 1024 it accepted PermGen space to
> max 256MB.
>
>
>
> Please let me know the reason when I have enough memory why it is not
> accepting heap size as 2048 and what is contract between heap size and
> PermGen space as reducing heap size helped PermGen space to increase.
>
>
> -----
> Satyendra Sharma
> --
> View this message in context: http://drools.46999.n3.nabble.com/What-is-
> contract-between-Heap-Size-and-PermGen-space-tp3043263p3043263.html
> Sent from the Drools: User forum mailing list archive at Nabble.com.
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