Re: [Xen-users] allocating memory to dom0

["Ulrich Windl" <ulrich.windl@xxxxxxxxxxxxxxxxxxxx>]

On 19 Oct 2006 at 22:43, john maclean wrote:

> Hey chaps, having a minor dispute with a friend. According the README
> in the Xen sources....
> "
>    The Xen command line takes a number of optional arguments described
>    in the manual. The most common is 'dom0_mem=xxxM' which sets the
>    amount of memory to allocate for use by your initial virtual
>    machine (known as domain 0). Note that Xen itself reserves about
>    32MB memory for internal use, which is not available for allocation
>    to virtual machines.
> .."
> 
> I've taken this to mean that one allocates say, half of one's RAM to
> dom0 with the command `dom0_mem=xxxM`. The domUs will then use up to
> the other half of the box's RAM. Is this correct?
> 
> My buddy says that this is unnecessary as the dom0 only needs 32M of
> ram. It will give the RAM away to the domU chaps until it has no more
> RAM to spare.
> 

Hi,

let me add: I got the idea that all DomUs take their RAM from the Dom0 RAM, so 
if 
I limit the RAM of Dom0, will I waste RAM? Maybe some documentation about 
memory 
management should be added to the user manual...

Regards,
Ulrich


> -- 
> John Maclean  - 07739 171 531
> MSc (DIC)
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users



_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users