Re: performance differences between kvm/xen

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On Sat, Oct 16, 2010 at 12:58 PM, Dennis Jacobfeuerborn <dennisml@xxxxxxxxxxxx> wrote:
On 10/16/2010 08:11 PM, Pasi KÃrkkÃinen wrote:
> On Thu, Oct 14, 2010 at 02:16:42PM +0100, Bart Swedrowski wrote:
>> Hi Karanbir,
>>
>> On 14 October 2010 19:59, Karanbir Singh<mail-lists@xxxxxxxxx> Âwrote:
>>>
>>> On 10/14/2010 07:48 AM, Tom Bishop wrote:
>>>> I think xen is still on top in terms of performance and features....now
>>>
>>> that is indeed what it 'feels' like, but I'm quite keen on putting some
>>> numbers on that.
>>
>> I have done some testing some time ago on one of the EQ machines that
>> I got from hetzner.de. ÂFull spec of the machine was as following:
>
> Note that 64bit Xen guests should be HVM, not PV, for best performance.
> Xen HVM guests obviously still need to have PV-on-HVM drivers installed.
>
> 32bit Xen guests can be PV.

Hm, why would HVM be faster than PV for 64 bit guests?

Regards,
 Dennis

lol, there's seems to be a lot of hearsay surrounding performance and Xen.



Grant McWilliams

Some people, when confronted with a problem, think "I know, I'll use Windows."
Now they have two problems.

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