[one-users] KVM process at 99% CPU

Daniel Dehennin daniel.dehennin at baby-gnu.org
Thu Nov 7 12:56:17 PST 2013


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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