Re: [Xen-users] xen on amd64 or intel

[Daniel Goertzen <goertzen@xxxxxxxx>]

The virtualization hardware only helps you when you have OSes that are 
not Xen aware.  Since you say you just want to run linux, the vanderpool 
and pacifica extensions will do nothing for you.  Also (someone correct 
me if I'm wrong), Xen aware linux is faster than fully virtualized linux.
As for 32 bit vs 64 bit kernels, you generally cannot mix both on the 
same physical hardware.  Vanderpool/Pacifica allows you to break this.
Cheers,
Dan.
(This email brought to you by a domU mailserver passing through a domU 
firewall)
Erik Tews wrote:

> Hi
>
> We would like to buy a new server-hardware for a xen-server. We are
> going to run linux as dom0 and domU. The whole server will have 4 GB of
> main memory. Do you got any suggestions if it is better to buy an
> opteron (amd64) cpu, or an intel (ia32) cpu? A opteron is much better,
> if you need more than 2 gb in the userspace, but intel has
> virtualization build into hardware.
>
> We currently tend to buy and amd64, has somebody an amd64 system
> running, with i386 and amd64 domU systems mixed, or does know if it is
> possible and/or stable? Is an intel cpu much faster when using
> vanderpool, then an amd64 running in 32 bit mode without any special
> hardware support?
>  

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