[vfio-users] CPU Provisioning Question.

[Quentin Deldycke]

I would say yes, and the opposite also.

The host manage the emulator: the "qemu" process.
If the host is at 100% cpu usage. or fully interrupted, the qemu process
will slow down. And stuttering could happen on guests.

--
Deldycke Quentin


On 26 January 2016 at 13:11, Mario Goebbels <me at tomservo.cc> wrote:

> I was wondering about this for related matters. So it is advised to leave
> some breathing room for the host, even if only one VM is running? I also
> have 6 hyperthreaded cores, I've set up the VM currently with 4 of them (4
> cores, 2 threads), leaving the other two for the host and iothread. Would
> using all 6 in the VM cause issues when the VM comes under high load,
> because the host may get choked out of CPU time?
>
> Regards,
> -mg
>
> On Tue, Jan 26, 2016 at 11:17 AM, Quentin Deldycke <
> quentindeldycke at gmail.com> wrote:
>
>>
>> Keep cores separated for both vm. One have 2 cores, the other one 2. and
>> 1 for the host.
>> Think that, for best performance, it is better that the host doesn't
>> schedule at all the cpu linked to the guest!
>>
>>
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