Re: [Xen-users] Xen questions (Be kind)

[mywildimagination@xxxxxxxxx]

On 27/02/2012 07:27 PM, Jeff Sturm wrote:
> > -----Original Message-----
> > From: mywildimagination@xxxxxxxxx [mailto:mywildimagination@xxxxxxxxx]
> > Sent: Monday, February 27, 2012 1:17 PM
> >
> > I'm not talking about dom0 (Or maybe I am), I am logging into the host OS, is 
> > this the
> > same as logging into the dom0 VM?
> Yes.
>
> > So if I look at TOP in the host SSH login am I just looking at the resources 
> > used by
> > dom0?
> Correct.
>
> What you have is a Xen hypervisor running on the bare hardware, with two 
> guests: A dom0 instance (which must always be running), and a domU 
> (unprivileged guest OS that you can start/stop as needed).  The difference 
> between the two guests is that the dom0 is privileged--Xen allows it to 
> directly access most hardware, in particular the PCI bus.  The hypervisor 
> itself does not provide a means for direct interactive commands, so instead  
> you log into dom0 to issue hypervisor commands.
>
> The figure in this page may help to explain: 
> http://libvirt.org/architecture.html
>
> -Jeff

Thanks Jeff, that's cleared up a lot. So I can safely say that the 
single VM running on this server is allocated as much resource as can be 
made available to it and if it needs more I need to upgrade the server?
thanks

Ben


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