Re: [Openstack] nova assign isntances to cpu pinning

- Original Message - > From: "Arne Wiebalck" > To: "Steve Gordon" > Cc: "Manuel Sopena Ballesteros" , > openstack@lists.openstack.org > Sent: Tuesday, February 7, 2017 2:00:23 PM > Subject: Re: [Openstack] nova assign isntances to cpu p

Re: [Openstack] nova assign isntances to cpu pinning

;> <mailto:arne.wieba...@cern.ch>> >>>> To: "Manuel Sopena Ballesteros" >>> <mailto:manuel...@garvan.org.au>> >>>> Cc: openstack@lists.openstack.org <mailto:openstack@lists.openstack.org> >>>> Sent: Tuesday, February 7,

Re: [Openstack] nova assign isntances to cpu pinning

ists.openstack.org <mailto:openstack@lists.openstack.org> >> Sent: Tuesday, February 7, 2017 2:46:39 AM >> Subject: Re: [Openstack] nova assign isntances to cpu pinning >> >> Manuel, >> >> Rather than with aggregate metadata we assign instances to NUMA nodes

Re: [Openstack] nova assign isntances to cpu pinning

- Original Message - > From: "Arne Wiebalck" > To: "Manuel Sopena Ballesteros" > Cc: openstack@lists.openstack.org > Sent: Tuesday, February 7, 2017 2:46:39 AM > Subject: Re: [Openstack] nova assign isntances to cpu pinning > > Manuel, > >

Re: [Openstack] nova assign isntances to cpu pinning

On 02/06/2017 06:19 PM, Manuel Sopena Ballesteros wrote: Hi, I am trying to isolate my instances by cpu socket in order to improve my NUMA hardware performance. What would be the recommended way to do this? In order to dedicate a host CPU to each virtual CPU, set the flavor extra spec "h

Re: [Openstack] nova assign isntances to cpu pinning

Hi Sinh, Depending on flavor size and benchmark, we were able to reduce the loss compared to bare metal from 8-20% to 3-5%. Details can be found on our blog: http://openstack-in-production.blogspot.ch/2015/08/numa-and-cpu-pinning-in-high-throughput.html and in more depth in this presentation: h

Re: [Openstack] nova assign isntances to cpu pinning

hi arne, do you happen to have performance numbers before and after creating guests with and without the cpu pinning options? thanks. Sinh On Mon, Feb 6, 2017 at 11:46 PM, Arne Wiebalck wrote: > Manuel, > > Rather than with aggregate metadata we assign instances to NUMA nodes via > flavor ex

Re: [Openstack] nova assign isntances to cpu pinning

Manuel, Rather than with aggregate metadata we assign instances to NUMA nodes via flavor extra_specs, i.e. nova flavor-show reports something like —> | extra_specs| {"hw:numa_nodes": "1"} | <— for our NUMA-aware flavors. This seems to work pretty well and gives the desired p

Re: [Openstack] nova assign isntances to cpu pinning

: [Openstack] nova assign isntances to cpu pinning Hi, I am trying to isolate my instances by cpu socket in order to improve my NUMA hardware performance. [root@openstack-dev ~(keystone_admin)]# nova aggregate-set-metadata numa pinned=true Metadata has been successfully updated for aggregate 1

[Openstack] nova assign isntances to cpu pinning

Hi, I am trying to isolate my instances by cpu socket in order to improve my NUMA hardware performance. [root@openstack-dev ~(keystone_admin)]# nova aggregate-set-metadata numa pinned=true Metadata has been successfully updated for aggregate 1. +++++-