Re: [Xen-users] 2 DomU and 2 4-cores CPU

[Michael Schmidt <michael.schmidt@xxxxxxxxxx>]

Hi,

you can asign all DomUs all cores.
In the case of 100% utilisation of both DomUs, the xen-scheduler 
provides 50% CPU time from all the CPUs for each DomU.
If one DomU idles and the other one, need 100% CPU, it will get the 
power of all the 8 Cores.
Regards
- Michael Schmidt

L.M.J schrieb:
> Hi,
>
>   With my college, I was wondering what is the best optimization for our
> setup. I've got 2 VM with 16GB of RAM and 4 vCPU to each one. My server got
> 2 CPU with 4 cores inside (makes 8 CPU). What produce the best performance
> : 
>   1) Give ALL cpu to my 2 VM and each ones will take its 4 vCPU where it
> can
>   2) Give CPU 0-3 to VM1 and CPU 4-7 to VM2 : each vm own the 4 cores from
> 1 CPU
>   3) Give CPU 0,1,4,5 to VM1 and 2,3,6,7 to VM2 : mix cores  between the
> both CPU
>
>   Thanks by advance for any information or point me to any docs talking
> about this ! 
>
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>   
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