Re: [Xen-devel] Re: 2.6.32 pvops dom0 oom when creating a domU

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Mon, Aug 01, 2011 at 11:19:25PM -0400, Konrad Rzeszutek Wilk wrote:
> On Tue, Aug 02, 2011 at 01:57:53AM +0200, Daniel Musketa wrote:
> > 2011/8/2 Daniel Musketa <daniel.musketa@xxxxxxxxxxxxxx>:
> > > Maybe I should say more about memory usage:
> > 
> > I got even more detailled logs for you in the attached file:
> > 
> > line   3: dom0 memory: 2,560 M
> > line  20: 21,637 M free
> > line  34: dom0_mem=4000M
> > line  47: domU memory = '2800'
> > line  72: OOM begins
> > line 157: key 'm' on (XEN) console
> 
> Try the 'mem=4G' in your Linux line (along with the one in your hypervisor).
> The problem is that Dom0 sets up pagetables for the 32GB even thought it is 
> never
> going to use it - the 'mem=4G' should fix that for you.
> 

Hmm.. Does that explain the dom0 OOM ? Why does dom0 OOM when creating a domU ?
In this case dom0 didn't have to be ballooned down, it shouldn't see any 
changes to its memory? 

Just trying to understand it better :) 

-- Pasi


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