On 3/12/2011 9:53 AM, Todd And Margo Chester wrote: >> -------- Original message -------- >> Subject: Re: [libvirt-users] Can I configure cores instead of CPU's >> From: Todd And Margo Chester&lt;toddandmargo(a)gmail.com&gt; >> To: &quot;libvirt-users@redhat.com&quot;&lt;libvirt-users(a)redhat.com&gt; >> CC: >> >> >> Hi All, >> >> Scientific Linux 6.1 x64 >> qemu-kvm-0.12.1.2-2.160.el6_1.2.x86_64 >> >> My XP-Pro guest will only let me use two CPUs. >> Is there a way I can tell Virt-Manager to use >> one CPU with six cores instead of four separate >> CPUs? >> >> I can manually insert things with >> virsh edit KVM-WinXP >> >> Currently, I have: >> <vcpu>6</vcpu> >> >> I found an example of a run string: >> >> -smp 2,sockets=2,cores=1,threads=1 >> >> But I will be darned if I can figure out the virsh xml syntax. >> >> Many thanks, >> -T > On 12/02/2011 05:32 PM, Frank Hauptle wrote: > > Yes under advanced in cpu in virt manager are socket /core > > settings. i use a fedora virt manager to connect to sl61 > > libvirt. more options that way. > > > I configured my processor in virt-mamager: > > CPU's: Current Allocation: 2 > Manual set CPU Topology: > Sockets: 1 > Cores: 6 > Threads: 1 > > or from my XML file > > <vcpu>1</vcpu> > <cpu> > <topology sockets='1' cores='6' threads='1'/> > </cpu> > > I still get two CPUs in my guest XP-Pro. > > What am I doing wrong? > > -T

I'm not even sure XP could differentiate between a core and a socket as multicore CPU's were not common to x86 in 2000 when XP was released. If you want to see if it really worked, download a knoppix CD and mount the ISO in the CDrom of that VM, then set it to boot from the CDROM. When knoppix boots up, open a terminal and type: cat /proc/cpuinfo See what it gives you. I think the hardware info GUI app in knoppix will give you more info too. cheers Frank