Re: [Xen-users] Accessing new extra memory

["Daniel P. Berrange" <berrange@xxxxxxxxxx>]

On Wed, Jun 27, 2007 at 12:11:48PM -0500, Steven Timm wrote:
> 
> Hi--I am currently running i386 version of xen 3.0.2
> [root@fermigrid0 ~]# uname -a
> Linux fermigrid0.fnal.gov 2.6.16-xen3_86.1_rhel4.1 #1 SMP Thu Apr 13 
> 06:52:14 PDT 2006 i686 i686 i386 GNU/Linux
> 
> 
> The machine previously had 4GB of RAM, and was booted
> with option dom0_mem=1024000 to ensure at least 1GB of RAM in
> dom0. I am also running five Xen instances using 500MB of RAM apiece.
> 
> Today I upgraded the RAM to 12GB.  I attempted to leave dom0 at 1GB
> and increase each of the Xen instances to 1GB for starters.
> What actually happened is by the time I tried to start the
> third 1GB instance I ran out of memory, it said there were only
> 168MB available.
> 
> Is there something in this kernel that limits us to only 4GB of RAM?

 Xen 3.0.2  did not support PAE, hence is limited to 4 GB. Upgrade
to newer Xen - at least Xen 3.0.3

Regards,
Dan.
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