XEN vs VirtualBox

Luc MAIGNAN luc.maignan at winxpert.com
Tue Apr 5 16:39:42 UTC 2011

It  is a 6 x Quad-Core server with virtualization support enabled (runs 
on RHEL 5)

Le 05/04/11 18:33, Patrick O'Callaghan a écrit :
> On Tue, 2011-04-05 at 12:29 -0400, Digimer wrote:
>> On 04/05/2011 12:09 PM, Luc MAIGNAN wrote:
>>> Hi,
>>> until now, I use VirtualBox to manage several virtual machines. I have
>>> performances problems. I can see that the VMS don't use really all CPU
>>> capabilities. I think that the problem come from the CPU emulation done
>>> by VirtualBox.
>>> So I said to me that the solution is to use a real hypervisor. I planned
>>> tu use XEN for doing this.
>>> Do you think that I can really use CPU capabilities by using XEN ?
>>> Is there is way then to convert VB image to XEN domains ?
>>> Thanks for any help
>> If you are using recent versions of Fedora, you might want to look at
>> KVM as it is has native support. Xen is a great hypervisor, but it
>> currently requires more effort to get working. If you want to use Xen
>> "out of the box", then I'd recommend looking at CentOS 5.5.
>> Both KVM and Xen support hardware virtualization.
> As does VirtualBox (and VMware for that matter). Perhaps the OP doesn't
> have hardware virtualization support?
> poc

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