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On Mon 27 Aug 2018, 04:20 Guo, Ruijing, <ruijing.guo at intel.com> wrote:

> Hi, Stephen,
>
> After setting flavor, VM was created in node 0 (expect in node1). How to
> debug it?
>
> Nova.conf
> [neutron]
> physnets = physnet0,physnet1
>
> [neutron_physnet_physnet1]
> numa_nodes = 1
>
Have you enabled the numa topology filter its off by default and without it
the numa aware vswitch code is disabled.

>
> openstack network create net1 --external --provider-network-type=vlan
> --provider-physical-network=physnet1 --provider-segment=200
> ...
> openstack server create --flavor 1 --image=cirros-0.3.5-x86_64-disk --nic
> net-id=net1 vm1
>
> <cputune>
>     <shares>1024</shares>
>     <vcpupin vcpu='0' cpuset='0-7,16-23'/>
>     <emulatorpin cpuset='0-7,16-23'/>
>   </cputune>
>
> available: 2 nodes (0-1)
> node 0 cpus: 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23
> node 0 size: 64412 MB
> node 0 free: 47658 MB
> node 1 cpus: 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31
> node 1 size: 64502 MB
> node 1 free: 44945 MB
> node distances:
> node   0   1
>   0:  10  21
>   1:  21  10
>
> Thanks,
> -Ruijing
>
> -----Original Message-----
> From: Stephen Finucane [mailto:sfinucan at redhat.com]
> Sent: Saturday, August 25, 2018 12:15 AM
> To: OpenStack Development Mailing List (not for usage questions) <
> openstack-dev at lists.openstack.org>
> Subject: Re: [openstack-dev] [nova][neutron] numa aware vswitch
>
> On Fri, 2018-08-24 at 09:13 -0500, Matt Riedemann wrote:
> > On 8/24/2018 8:58 AM, Stephen Finucane wrote:
> > > Using this won't add a NUMA topology - it'll just control how any
> > > topology present will be mapped to the guest. You need to enable
> > > dedicated CPUs or a explicitly request a NUMA topology for this to
> > > work.
> > >
> > > openstack flavor set --property hw:numa_nodes=1 1
> > >
> > > <or>
> > >
> > > openstack flavor set --property hw:cpu_policy=dedicated 1
> > >
> > >
> > > This is perhaps something that we could change in the future, though
> > > I haven't given it much thought yet.
> >
> > Looks like the admin guide [1] should be updated to at least refer to
> > the flavor user guide on setting up these types of flavors?
> >
> > [1]
> > https://docs.openstack.org/nova/latest/admin/networking.html#numa-affi
> > nity
>
> Good idea.
>
> https://review.openstack.org/596393
>
> Stephen
>
>
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