[Openstack] CPU pinning question

Satish Patel satish.txt at gmail.com
Tue Dec 15 15:12:08 UTC 2015


Sorry forgot to reply all :)

This is what i am getting

[root at compute-1 ~]# virsh vcpupin instance-00000043
VCPU: CPU Affinity
----------------------------------
   0: 2-3,6-7
   1: 2-3,6-7


Following numa info

[root at compute-1 ~]# numactl --hardware
available: 2 nodes (0-1)
node 0 cpus: 0 3 5 6
node 0 size: 2047 MB
node 0 free: 270 MB
node 1 cpus: 1 2 4 7
node 1 size: 2038 MB
node 1 free: 329 MB
node distances:
node   0   1
  0:  10  20
  1:  20  10

On Tue, Dec 15, 2015 at 8:36 AM, Arne Wiebalck <Arne.Wiebalck at cern.ch> wrote:
> The pinning we set up goes indeed into the <cputune> block:
>
> —>
> <vcpu placement='static'>32</vcpu>
>   <cputune>
>     <shares>32768</shares>
>     <vcpupin vcpu='0' cpuset='0-7,16-23'/>
>     <vcpupin vcpu='1' cpuset='0-7,16-23'/>
>> <—
>
> What does “virsh vcpupin <domain>” give for your instance?
>
> Cheers,
>  Arne
>
>
>> On 15 Dec 2015, at 13:02, Satish Patel <satish.txt at gmail.com> wrote:
>>
>> I am running JUNO version with qemu-kvm-ev-2.1.2-23.el7_1.9.1.x86_64
>> on CentOS7.1
>>
>> I am trying to configure CPU pinning because my application is cpu
>> hungry. this is what i did.
>>
>> in /etc/nova/nova.conf
>>
>> vcpu_pin_set=2,3,6,7
>>
>>
>> I have created aggregated host with pinning=true and created flavor
>> with pinning, after that when i start VM on Host following this i can
>> see in guest
>>
>> ...
>> ...
>> <vcpu placement='static' cpuset='2-3,6-7'>2</vcpu>
>> ...
>> ...
>>
>> But i am not seeing any <cputune> info.
>>
>> Just want to make sure does my pinning working correctly or something
>> is wrong. How do i verify my pinning config is correct?
>>
>> _______________________________________________
>> Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>> Post to     : openstack at lists.openstack.org
>> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>
> --
> Arne Wiebalck
> CERN IT
>




More information about the Openstack mailing list