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Re: [Xen-users] I want to know if.....

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] I want to know if.....
From: Freddie Cash <fjwcash@xxxxxxxxx>
Date: Thu, 26 Feb 2009 15:51:45 -0800
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On February 26, 2009 3:32 pm Venefax wrote:
> It is not true at all. KVM and Xen are fundamentally different and
> address different problems. Xen allows for fast para-virtualization of
> Linux Domus, while KVM only fully-virtualizes. Nobody in his right mind
> would use KVM for a linux DOMu, because it would lose 75% of its
> performance, compared to para-virtualization. So KVM is for windows on
> Xen, but it will never replace Xen in the datacenter.

I think you are confusing HVM (hardware-assisted VMs), which both KVM and 
Xen support, with KVM (kernel-based VM), another virtualisation system.

KVM has paravirtualised network, block/storage, and console drivers for 
Linux and Windows.  Same as Xen.  There's no "75% loss of performance".


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