On Tue, 2009-05-26 at 08:43 +0200, Frank Mehnert wrote:
> On Tuesday 26 May 2009, hanasaki jiji wrote:
> > Can vbox use the total memory for allocation to VM's?  (physical +
> > swap)  There are a couple VM's that will total just over 4gig of
> > allocated RAM in the vm configuration.  They box only has 4 gig of
> > real ram.  Thus I want to allocate the RAM to the vm's and have the
> > host swap to disk as needed when total memory use by the guests goes
> > over the amount left in the host as opposed to keeping the physical
> > ram configured to the guests under 4gig total and putting swap in each
> > guest.
> 
> Only physical RAM is possible at the moment. Note that VirtualBox
> allocates guest RAM on demand and once granted to a guest, the
> RAM cannot be revoked until the VM process terminates. Therefore
> you cannot start VMs which require in summary more than your host
> RAM. Actually you need to keep some RAM available for you host
> system (host kernel, host desktop environment, ...).

How is this enforced? i.e. what happens when you attempt to overcommit
memory?

-- 
Graham Campbell <[email protected]>

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