Xen users - Jan 2008 - about windows PV drivers

Hi All ,

What does PV driver standard for . Does it mean I can run windows as a
paravirt guest ?
If so , that sounds cool . It seems paravirt''s performance is better ,
right ?

Thank you
yushang

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On 1/28/08, 余上 <yusunn@gmail.com> wrote:
> What does PV driver standard for . Does it mean I can run windows as a
> paravirt guest ?
no, windows itself is still HVM; but a couple of I/O drivers does know
they're not driving real hardware

> If so , that sounds cool . It seems paravirt's performance is better ,
right ?
yes it's better, but most of the HVM overhead is doing I/O, so just
optimising the drivers gains a big chunk of the advantage.


--
Javier

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Hi Yushang,

No, it does not allow you to run Windows as a PV guest. However, it does
allow a HVM Windows domain to use PV drivers for performance hungry areas,
mainly disk i/o and network i/o. This way, performance of the HVM guest
approaches to the one of a fully PV guest.

This functionality is provided in the "commercial" versions of Xen,
but not
in open source version. Therefore, developers are trying to write this from
scratch.

Best regards,

Emre

On Jan 28, 2008 6:02 PM, 余上 <yusunn@gmail.com> wrote:
> Hi All ,
>
> What does PV driver standard for . Does it mean I can run windows as a
> paravirt guest ?
> If so , that sounds cool . It seems paravirt''s performance is
better ,
> right ?
>
> Thank you
> yushang
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>


-- 
Emre Erenoglu
erenoglu@gmail.com


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