libvirt users - Apr 2019 - Running all my virtual machines with a low priority

Hi all:

I have an Ubuntu 18.04 system. What is the easiest way to run all of my virtual
machines with a low priority? Say a "nice" level of 15.

I just do not want my virtual machines to have too much of an impact in any
other processes on the system.

Thanks in advance,
   rdiez

On Tue, Apr 30, 2019 at 04:24:08PM +0200, R. Diez wrote:
> Hi all:
> 
> I have an Ubuntu 18.04 system. What is the easiest way to run all of my
virtual machines with a low priority? Say a "nice" level of 15.
You can use the  <vcpusched>  (and related elements) to control
the schedular nice level up or down

  https://libvirt.org/formatdomain.html#elementsCPUTuning

Regards,
Daniel
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>> I have an Ubuntu 18.04 system. What is the easiest way to run all of my
virtual machines with a low priority? Say a "nice" level of 15.
> 
> You can use the  <vcpusched>  (and related elements) to control
> the schedular nice level up or down
> 
>    https://libvirt.org/formatdomain.html#elementsCPUTuning
Thanks for your quick answer.

I took at look at that documentation, but I did not quite understand it. It
talks about vCPUs and how they are scheduled. My guess is that it is all
about how those virtual CPUs are scheduled against each other.

However, I wanted to lower the priority of all virtual machines against other
processes on the host system.

Regards,
   rdiez