10:36 a.m.
Hello,
i have a general Question about Hardware CPU, Socket, Cores and the
VCPU, Cores per VSocket and VScoket for virtual Machines. Example i have
a single CPU with 4 Cores and 8 Threads. As far as i understand i should
configure the virtual machines with that number of socket as the host
has. So in this example with max 1 Socket. How is the possibility in
VCPUs and VCores? What is the limit in this example? Can i only run max
4 VMs?
Thanks for clarifying
Taste
10:49 a.m.
On 17 Feb 2016, at 17:36, Taste-Of-IT <kontakt(a)taste-of-it.de>
wrote:
Hello,
i have a general Question about Hardware CPU, Socket, Cores and the VCPU, Cores per
VSocket and VScoket for virtual Machines. Example i have a single CPU with 4 Cores and 8
Threads. As far as i understand i should configure the virtual machines with that number
of socket as the host has. So in this example with max 1 Socket. How is the possibility in
VCPUs and VCores? What is the limit in this example? Can i only run max 4 VMs?
in general - as many sockets as the number of cores you have available, minus a couple for
the host OS(one or two should be ok)
you can run more, but then they will compete for the core and performance would decrease.
But if those VMs are not CPU intensive it may very well be ok (you just need to disable
the default cluster policy which limits the size to number of hosts’s cores)
Thanks,
michal
Thanks for clarifying
Taste
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7:09 a.m.
Hello Michal,
and thanks for your reply. Sorry its not clear enough for me. So let me
do some examples. Situation are still 4 Cores 8 Threads. So for a normal
usecase i would configure 1vCPU with 1vSocket, right? But i can also
configure 2vCPU with 1vSocket? So the vSocket is like the physical CPU
Socket while the vCPU is like the Threads of the CPU, right? Physicaly
1Socket has 2Threads, so i could configre 4vServer with each 2vCPU and
1vSocket, right?
thx again
Taste
thx.
Taste
Am 2016-02-17 17:49, schrieb Michal Skrivanek:
> On 17 Feb 2016, at 17:36, Taste-Of-IT
<kontakt(a)taste-of-it.de> wrote:
>
> Hello,
> i have a general Question about Hardware CPU, Socket, Cores and the
> VCPU, Cores per VSocket and VScoket for virtual Machines. Example i
> have a single CPU with 4 Cores and 8 Threads. As far as i understand i
> should configure the virtual machines with that number of socket as
> the host has. So in this example with max 1 Socket. How is the
> possibility in VCPUs and VCores? What is the limit in this example?
> Can i only run max 4 VMs?
in general - as many sockets as the number of cores you have
available, minus a couple for the host OS(one or two should be ok)
you can run more, but then they will compete for the core and
performance would decrease. But if those VMs are not CPU intensive it
may very well be ok (you just need to disable the default cluster
policy which limits the size to number of hosts’s cores)
Thanks,
michal
>
> Thanks for clarifying
> Taste
> _______________________________________________
> Users mailing list
> Users(a)ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
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Taste-Of-IT