Re: [libvirt-users] cgroup for VM - does it work properly?

Martin Pavlásek
Wed, 05 Mar 2014 23:47:41 -0000

On Thu 06 Mar 2014 00:42:27 CET, Eric Blake wrote:
> On 03/05/2014 04:32 PM, Martin Pavlásek wrote:
>> Hi
>>
>> I tried to restrict usage of some running VM by cpu.shares (i.e. set to
>> 10 from original 1024) on loaded system and it seem doesn't work as
I
>> expected... all running processes has same CPU usage (by htop) :-/
>
> How exactly are you changing the cgroup settings?  Are you trying to
> directly modify cgroup files (unsupported), or using the libvirt API
> (such as via virsh schedinfo)?
>
Via mounted virtualfs -
/sys/fs/cgroup/cpu/machine/<name-of-VM>/{emulator,vcpu0}/cpu.shares