* Query with respect to VCPU scheduling
@ 2014-10-03 17:40 Mohan Kumar
2014-10-08 1:10 ` Wanpeng Li
0 siblings, 1 reply; 2+ messages in thread
From: Mohan Kumar @ 2014-10-03 17:40 UTC (permalink / raw)
To: kvm
Hello all,
I am new to KVM and look at a particular case in KVM.
I know that KVM uses CFS.
The question I have is as follows:
- I have two VMs with 2 VCPU each. And the actual
CPUs are also 2 and both the VMs use the 2 CPUs.
I want one VM to use only 25 % of the actual CPU and the
remaining to be used by the other VM.
Since KVM uses CFS, I am thinking that with CFS I can
provide these guarantee as mentioned above. I know
we can do these shares with cgroups.
Is cgroups the only option?. Any pointers to this would help.
Thanks,
Mohan
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Query with respect to VCPU scheduling
2014-10-03 17:40 Query with respect to VCPU scheduling Mohan Kumar
@ 2014-10-08 1:10 ` Wanpeng Li
0 siblings, 0 replies; 2+ messages in thread
From: Wanpeng Li @ 2014-10-08 1:10 UTC (permalink / raw)
To: Mohan Kumar; +Cc: kvm
On Fri, Oct 03, 2014 at 01:40:29PM -0400, Mohan Kumar wrote:
>Hello all,
>
>I am new to KVM and look at a particular case in KVM.
>I know that KVM uses CFS.
>
>The question I have is as follows:
>
>- I have two VMs with 2 VCPU each. And the actual
> CPUs are also 2 and both the VMs use the 2 CPUs.
>
>I want one VM to use only 25 % of the actual CPU and the
>remaining to be used by the other VM.
>
>Since KVM uses CFS, I am thinking that with CFS I can
>provide these guarantee as mentioned above. I know
>we can do these shares with cgroups.
>
>Is cgroups the only option?. Any pointers to this would help.
How about CFS bandwidth control?
Regards,
Wanpeng Li
>
>Thanks,
>Mohan
>--
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^ permalink raw reply [flat|nested] 2+ messages in thread
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2014-10-03 17:40 Query with respect to VCPU scheduling Mohan Kumar
2014-10-08 1:10 ` Wanpeng Li
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