CentOS virt - May 2010 - 4 CPU with WinXP on Centos 5.5 KVM?

Has anyone had any success getting WinXP 32bit to use 4 CPU's under
Centos 5.5 KVM?
 
I have tried everything and the best I can get is 2 CPU's.  I tried
everything listed here
http://www.linux-kvm.com/content/running-windows-smp-guests  I am using
the VIRTIO drivers.    
 
Is this known limitation of KVM-83-164 (Centos5 release) with WinXP
32bit?  I think there are reports of it working with 32bit Windows 2003
(or was it Windows 2008?).
 
I know KVM is granting the 4 CPU's since Linux VM can use 4 CPU's on the
same computer.
 
Thanks,
 
Marcelino



 
 

Marcelino Mata
Engineering Technology Specialist
Multimatic Technical Centre
85 Valleywood Drive
Markham, ON
Canada
L3R 5E5
Tel.???+1 905 470 0025

?
?
?
CONFIDENTIALITY NOTE: This email (and attachments, if any) contain(s)
information that is PRIVATE and CONFIDENTIAL, and may be LEGALLY PRIVILEGED or
otherwise exempt from disclosure under applicable law. All copyright is
reserved, and no right or license is granted to duplicate or publish the content
of this email or to forward it to third parties, without, in each case, specific
permission. If you have received this email in error, you must not copy,
distribute, retain or use this email or the information contained in it for any
purpose (other than to notify the sender). If you believe that you are not the
intended recipient of this email, please contact the sender immediately and
delete this email from your computer system (including any archive or other
storage facilities). Thank you.

> 
> Has anyone had any success getting WinXP 32bit to use 4 CPU's 
> under Centos 5.5 KVM?
>  
> I have tried everything and the best I can get is 2 CPU's.  I 
> tried everything listed here 
> http://www.linux-kvm.com/content/running-windows-smp-guests  
> I am using
> the VIRTIO drivers.    
>  
> Is this known limitation of KVM-83-164 (Centos5 release) with 
> WinXP 32bit?  I think there are reports of it working with 
> 32bit Windows 2003 (or was it Windows 2008?).
>  
> I know KVM is granting the 4 CPU's since Linux VM can use 4 
> CPU's on the same computer.
>  
> Thanks,
>  
> Marcelino
Marcelino,

TTBOMK winxp is only going to support 2 physical cpus unless you have a
special winxp license that we have not experienced

we have never seen more than a 1 or 2 physical cpu version of winxp

eh ?

 - rh

2010/5/28 Marcelino Mata <mmata at
multimatic.com>:
> Has anyone had any success getting WinXP 32bit to use 4 CPU's under
> Centos 5.5 KVM?
>
> I have tried everything and the best I can get is 2 CPU's. ?I tried
> everything listed here
> http://www.linux-kvm.com/content/running-windows-smp-guests ?I am using
> the VIRTIO drivers.
As it is discussed in the comments on the page you have linked above,
XP only supports 2 CPUs but more cores.

AFAIK KVM will always emulate CPUs not cores.

Best Regards
Kenni