xen discuss - Dec 2009 - windows xp domU consuming 200% cpu (dom0 is quad-core) at idle

What have I done wrong?  I installed an xp (service pack 2) domU using the
virt-install example from the man page, on a zfs volume.  I noticed this
behavior on build 129, and I replicated the behavior on build 130:

root@opensolaris:/tmp# virsh version
Compiled against library: libvir 0.7.0
Using library: libvir 0.7.0
Using API: Xen 3.0.1
Running hypervisor: Xen 3.4

root@opensolaris:/tmp# 

root@opensolaris:/tmp# cat /etc/release 
                       OpenSolaris Development snv_130 X86
           Copyright 2009 Sun Microsystems, Inc.  All Rights Reserved.
                        Use is subject to license terms.
                           Assembled 18 December 2009
root@opensolaris:/tmp# 

''xm top'' shows 200% utilitzation, while my xp machine is
sitting idle.

The xp domU task manager shows it is idle; it''s a fresh install of xp
and the domU has 512M assigned to it (domU has 8G, zfs_arc_max is limited in
/etc/system) ; no other domUs are set up on my dom0.  I''ve tried
--vcpus=2 and --vcpus=1 on different installs, no effect.

I''ve rebooted my dom0 and the xp domU multiple times, and I still see
the same behavior.

I''ve created other domUs (non-windows os) on this machine, both --hvm
and --para, and I don''t witness the same problem.

Any ideas?

Hello,
I''ve got exactly the same problem on my server. 
Anyone solution to it??
Thanks
-Philip
-- 
This message posted from opensolaris.org

Hello everyone,

I''ve done few more installations of different OS builds with different
xVM/Xen versions on different servers and always the same problem as described
by Richard - MS Windows XP is idle, but xm top shows 200% utilitzation on 2vcpu
installation.

Is this some kind of bug?? Obviously this makes xVM in OpenSolaris absolutely
unusable for MS Windows XP virtualization.

Thanks
Philip
-- 
This message posted from opensolaris.org

Am 07.04.2010 16:56, schrieb Philip Gorwell:
> Hello everyone,
> 
> I''ve done few more installations of different OS builds with
different xVM/Xen versions on different servers and always the same problem as
described by Richard - MS Windows XP is idle, but xm top shows 200% utilitzation
on 2vcpu installation.
> 
> Is this some kind of bug?? Obviously this makes xVM in OpenSolaris
absolutely unusable for MS Windows XP virtualization.
> 
> Thanks
> Philip
Yes, it seems that there are a lot of bugs/problems in windows XP or
2003 which come important when run as xvm guests, especially in io
aspects (disk io drops after a short at ~20M/s to 5K/s for 20 seconds or
so, after that it would go up to ~60M/s on our metal here). (Concluded
from my personal experience)
Just use win7 or 2008R2 if possible.

Florian