centos-virt-bounces@centos.org schrieb am 22.02.2012 08:14:14:
Trey Dockendorf treydock@gmail.com Gesendet von: centos-virt-bounces@centos.org
22.02.2012 08:14
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Re: [CentOS-virt] How many virtual guest 'cpus' can a core duo 'quad' core support
On Tue, Feb 21, 2012 at 2:59 PM, James B. Byrne byrnejb@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@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
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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
CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Hello,
I think thats not correct. I my case I have a HP N36L Server with one Dualcore Prozessor and 4 guest running. You can overbook the prozessor. Maybe the performance goes down.
Gruß Andreas Reschke ________________________________________________________________
Unix/Linux-Administration Andreas.Reschke@behrgroup.com