Re: [Xen-users] Windows on Xen+VT

Anthony Liguori
2005-09-15T17:51:36Z

Mark Williamson wrote:

>>Okay so I did 2)... Windows not runs stably and fine on Xen. But really
>>really slow though. I tried 3) but no help speeding the system up. I
could
>>really do with a few hints on how to speed up VMX domains though...
>>
>>
>
>I''m not sure if it''s known to be very fast - it''s
not going to fully optimised
>in the 3.0 release, AFAIK.
>
>Are benchmarks running slower than expected on it?  (I know you
can''t publish
>them but they might be interesting to look at).  Bear in mind that the QEmu
>display device we''re using is sluggish even under QEmu.
>
>
The current VT architecture is a proof-of-concept.  Every IO operation
takes a bunch of context switches.  There are a bunch of people working
on a new architecture that won''t suffer from this problem.

Regards,

Anthony Liguori

>Cheers,
>Mark
>
>
>
>>Quoting John Wilson <j.wilson@student.manchester.ac.uk>:
>>
>>
>>>To all you guys who have managed to get Windows up on Xen...
>>>
>>>Its early days for me as I only figured out how to get it up and
running
>>>through vnc today, but basically it runs rather slowly, and I wonder
if
>>>anyone has any experience on ''best practices'' and
such when creating
>>>WinXP virtual machines.
>>>
>>>I''m currently using an image that boots to windows setup I
made using
>>>QEMU, and it boots fine, tells me its resuming setup, then blue
screens
>>>with a reference to an infinite loop being detected in the framebuf
>>>driver. (Although I think it might just be detecting extreme
slowness as
>>>this infinite loop).
>>>
>>>1) So how to speed it up/why would it be going so slowly? (my linux
VMX
>>>machines don''t exactly burn rubber either)
>>>2) Should I fully install windows onto the image with QEMU first?
>>>3) Should the video output be configured for full screen, as opposed
to
>>>windowed as it is currently?
>>>4)Is there any possibility at all that a VMX domain (especially
windows)
>>>could be run on a non-VT machine? (Beacause its a very new
pre-production
>>>bios and platform, and even though it''s set up in the bios
for VT, I
>>>don''t really trust it and it seems a little suspiciously
slow... I
>>>suppose I could test this in the lab really:-)
>>>5) Anything else I should know?
>>>
>>>
>>>John
>>>
>>>_______________________________________________
>>>Xen-users mailing list
>>>Xen-users@lists.xensource.com
>>>http://lists.xensource.com/xen-users
>>>
>>>
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>
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