Re: [Xen-users] Why limit dom0's memory?

["Sandor W. Sklar" <ssklar@xxxxxxxxxxxx>]

On Jun 15, 2008, at 7:37 PM, Tim Post wrote:

> On Sun, 2008-06-15 at 17:45 -0700, Sandor W. Sklar wrote:
> > Well, of course, the amount of memory that a dom0 needs depends upon
> > the service running within it.  I guess I didn't word my question
> > explicitly enough.  Is there a formula for determine how much  
> > memory a
> > dom0 might need, given a system with X amount of RAM, and X number of
> > guests, assuming there are no other services running in the dom0?
> You are hoping to calculate the best possible density? I.e. give dom-0
> xx MB per pv guest, xx MB per HVM guest?
Indeed, exactly!  Not exact numbers, but a guideline that would let me  
maximize the memory available to guests without running the risk of  
starving the dom0.
> Even that is too broad to really pin down, it would really depend on
> what you give the guests and how much they exercise the disks.

OK, thanks, I guess I assumed as much, given that if such information  
existed, Google would have told me.  :-)
        -s-


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