[one-users] KVM process at 99% CPU

[Javier Fontan]

Debian live is a linux, the boot menu is not and eats all CPU.

On Thu, Nov 7, 2013 at 9:56 PM, Daniel Dehennin
<daniel.dehennin at baby-gnu.org> wrote:
> Javier Fontan <jfontan at opennebula.org> writes:
>
>> Most, if not all, modern operating systems set the CPU to sleep mode
>> when they don't need to be used. The problem here is that the VMs are
>> not running a OS but a boot loader and it does not implement this
>> feature so it is using all the CPU cycles doing nothing. In this
>> regard KVM nor OpenNebula can help.
>
> Something is strange with this ISO, a Debian Live does not behave the same.
>
>> The only tip I can give you is to use cgroups to limit the total
>> amount of CPU a VM can use:
>>
>> http://opennebula.org/documentation:rel4.2:kvmg#working_with_cgroups_optional
>
> I'll do that, it's not serious if users can overload a node with a fork
> bomb in a VM ;-)
>
> Regards.
> --
> Daniel Dehennin
> Récupérer ma clef GPG:
> gpg --keyserver pgp.mit.edu --recv-keys 0x7A6FE2DF
>
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-- 
Javier Fontán Muiños
Developer
OpenNebula - The Open Source Toolkit for Data Center Virtualization
www.OpenNebula.org | @OpenNebula | github.com/jfontan