[Users] Virtual CPU

Yaniv Kaul ykaul at redhat.com
Mon Feb 20 09:35:06 UTC 2012


On 02/20/2012 08:16 AM, Shu Ming wrote:
> On 2012-2-20 2:02, зоррыч wrote:
>>
>> Hi
>>
>> I set uptwonodesrunningovirt.
>> The configuration ofboth serversis identical (node.png).
>> when you create avirtual machine toasetting is per(vm.png). It 
>> runssuccessfully.
>> Ifthe setting"Number of CPUCres," set to3(1Socket (s),3Core (s) per 
>> Socket) (fail.png) - VMwill not start.ovirterror:
>> “Cannot run VM.There are no available running Hosts with enough cores 
>> in VM's Cluster.”
>> Why not?
>>
>> Do I understand correctlythat the value of(1Socket (s),3Core (s) per 
>> Socket)means 3virtualCPU onaphysicalprocessor corenodes?
>> Number of CPUCres: 2 (2Socket (s),1Core (s) per Socket) -the virtual 
>> machineis startedsuccessfully
>> Number of CPUCres: 4 (2 Socket (s),2Core (s) per Socket) -error.
>> Number of CPUCres: 2 (1 Socket (s),2Core (s) per Socket) -the 
>> successful launch
>>
>>
>>
>> _______________________________________________
>> Users mailing list
>> Users at ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
> The number of active VMs is bigger than the physical cores in the host.

This is not an accurate statement. You could run, for example, 5 single 
vCPU VMs on a 4 core hypervisor.
Y.

>
> -- 
> Shu Ming<shuming at linux.vnet.ibm.com>
> IBM China Systems and Technology Laboratory
>
>
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users

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