On Tue, Feb 21, 2012 at 2:59 PM, James B. Byrne <byrnejb at harte-lyne.ca> wrote: > CentOS-6.2 > > What is the maximum number of cpus can I configure for a > single vm guest running on a host with this hardware? > > # lscpu > Architecture: x86_64 > CPU op-mode(s): 32-bit, 64-bit > Byte Order: Little Endian > CPU(s): 4 > On-line CPU(s) list: 0-3 > Thread(s) per core: 1 > Core(s) per socket: 4 > CPU socket(s): 1 > NUMA node(s): 1 > Vendor ID: GenuineIntel > CPU family: 6 > Model: 23 > Stepping: 10 > CPU MHz: 1998.000 > BogoMIPS: 5331.76 > Virtualization: VT-x > L1d cache: 32K > L1i cache: 32K > L2 cache: 2048K > NUMA node0 CPU(s): 0-3 > > I ask this because it occurs to me that I may have missed > something fundamental respecting the use of the initialism > CPU vice the term Cores. > > > -- > *** E-Mail is NOT a SECURE channel *** > James B. Byrne mailto:ByrneJB at Harte-Lyne.ca > Harte & Lyne Limited http://www.harte-lyne.ca > 9 Brockley Drive vox: +1 905 561 1241 > Hamilton, Ontario fax: +1 905 561 0757 > Canada L8E 3C3 > > _______________________________________________ > CentOS-virt mailing list > CentOS-virt at centos.org > http://lists.centos.org/mailman/listinfo/centos-virt The maximum you can assign to a single VM is the amount of CPUs visible to the KVM host. So a quad core is shows as 4 CPUs to the OS, so you could assign 4 vCPUs to a guest. To see how much is available and seen by KVM run # virsh nodeinfo. - Trey