Re: [Qemu-devel] RAM overcomittment

[Paul Brook]

> > However, swapping (using virtual memory) will be a huge performance
> > killer. It will affect the performance of your host OS and all
> > applications, as well as for your QEMU instances.
>
> The problem is the swaping even the VM don't need all of ressource
> assigned... We lost RAM...

You need to fix your host OS then. If the guest isn't using the memory it 
shouldn't be swapped in.

Paul