[Rdo-list] issue with numa and cpu pinning using SRIOV ports

Mon Nov 9 10:38:13 UTC 2015

Hi Steve,

thank you for you reply. Concerning your first question I really don't know
if supports it, I have a Dell PowerEdge R430. Running the command I see
this:

[root at compute03 ~]# numactl --hardware
available: 2 nodes (0-1)
node 0 cpus: 0 2 4 6 8 10 12 14 16 18 20 22
node 0 size: 32543 MB
node 0 free: 193 MB
node 1 cpus: 1 3 5 7 9 11 13 15 17 19 21 23
node 1 size: 32768 MB
node 1 free: 238 MB
node distances:
node   0   1
  0:  10  21
  1:  21  10

Concerning the second question, that 2 Nodes there shouldn't be used, as
they are configured as "normal" flavor for nova and don't have vcpu_pin_set
configured. I would expect that other node to appear there, but as I said,
after I use a vm with 6 cpus doesn't allow me to launch more vms, so it can
be something related with my topology/configuration.

Thanks,
Pedro Sousa

Regards,
Pedro Sousa

On Fri, Nov 6, 2015 at 8:52 PM, Steve Gordon <sgordon at redhat.com> wrote:

> ----- Original Message -----
> > From: "Pedro Sousa" <pgsousa at gmail.com>
> > To: "rdo-list" <rdo-list at redhat.com>
> >
> > Hi all,
> >
> > I have a rdo kilo deployment, using sr-iov ports to my instances. I'm
> > trying to configure NUMA topology and CPU pinning for some telco based
> > workloads based on this doc:
> >
> http://redhatstackblog.redhat.com/2015/05/05/cpu-pinning-and-numa-topology-awareness-in-openstack-compute/
> >
> > I have 3 compute nodes, I'm trying to use one of them to use cpu pinning.
> >
> > I've configured it like this:
> >
> > *Compute Node (total 24 cpus)*
> > */etc/nova/nova.conf*
> > vcpu_pin_set=2,3,4,5,6,7,8,9,10,11,12,13,14,15,18,19,22,23
> >
> > Changed grub to isolate my cpus:
> > #grubby --update-kernel=ALL
> > --args="isolcpus=2,3,4,5,6,7,8,9,10,11,12,13,14,15,18,19,22,23"
> >
> > #grub2-install /dev/sda
> >
> > *Controller Nodes:* */etc/nova/nova.conf*
> >
> scheduler_default_filters=RetryFilter,AvailabilityZoneFilter,RamFilter,ComputeFilter,ComputeCapabilitiesFilter,ImagePropertiesFilter,ServerGroupAntiAffinityFilter,ServerGroupAffinityFilter,PciPassthroughFilter,NUMATopologyFilter,AggregateInstanceExtraSpecsFilter
> > scheduler_available_filters = nova.scheduler.filters.all_filters
> > scheduler_available_filters =
> > nova.scheduler.filters.pci_passthrough_filter.PciPassthroughFilter
> *Created
> > host aggregate performance * #nova aggregate-create performance #nova
> > aggregate-set-metadata 1 pinned=true
> >
> > #nova aggregate-add-host 1 compute03
> >
> > *Created host aggregate normal*
> > #nova aggregate-create normal
> > #nova aggregate-set-metadata 2 pinned=false
> >
> > #nova aggregate-add-host 2 compute01
> >
> > #nova aggregate-add-host 2 compute02
> >
> > *Created the flavor with cpu pinning* #nova flavor-create m1.performance
> 6
> > 2048 20 4 #nova flavor-key 6 set hw:cpu_policy=dedicated #nova
> flavor-key 6
> > set aggregate_instance_extra_specs:pinned=true *The issue is:* With
> SR-IOV
> > ports it only let's me create instances with 6 vcpus in total with the
> conf
> > described above. Without SR-IOV, using OVS, I don't have that limitation.
> > Is this a bug or something? I've seen this:
> > https://bugs.launchpad.net/nova/+bug/1441169, however I have the patch,
> and
> > as I said it works for the first 6 vcpus with my configuration.
>
> Adding Nikola and Brent. Do you happen to know if your motherboard chipset
> supports NUMA locality of the PCIe devices and if so which NUMA nodes the
> SR-IOV cards are associated with? I *believe* numactl --hardware will tell
> you if this is the case (I don't presently have a machine in front of me
> with support for this). I'm wondering if or how the device locality code
> copes at the moment if the instance spans two nodes (obviously the device
> is only local to one of them).
>
> > *Some relevant logs:*
> >
> > */var/log/nova/nova-scheduler.log*
> >
> > 2015-11-06 11:18:17.955 59494 DEBUG nova.filters
> > [req-9e20f8a9-384f-45c2-aa99-2d7b3100c98d
> > 9340dc4e70a14aeb82013e5a1631de80 d5ecb0eea96f4996b565fd983a768b11 - -
> > -] Starting with 3 host(s) get_filtered_objects
> > /usr/lib/python2.7/site-packages/nova/filters.py:70
> >
> > 2015-11-06 11:18:17.955 59494 DEBUG nova.filters
> > [req-9e20f8a9-384f-45c2-aa99-2d7b3100c98d
> > 9340dc4e70a14aeb82013e5a1631de80 d5ecb0eea96f4996b565fd983a768b11 - -
> > -] Filter RetryFilter returned 3 host(s) get_filtered_objects
> > /usr/lib/python2.7/site-packages/nova/filters.py:84
> > 2015-11-06 11:18:17.955 59494 DEBUG nova.filters
> > [req-9e20f8a9-384f-45c2-aa99-2d7b3100c98d
> > 9340dc4e70a14aeb82013e5a1631de80 d5ecb0eea96f4996b565fd983a768b11 - -
> > -] Filter AvailabilityZoneFilter returned 3 host(s)
> > get_filtered_objects
> > /usr/lib/python2.7/site-packages/nova/filters.py:84
> > 2015-11-06 11:18:17.955 59494 DEBUG nova.filters
> > [req-9e20f8a9-384f-45c2-aa99-2d7b3100c98d
> > 9340dc4e70a14aeb82013e5a1631de80 d5ecb0eea96f4996b565fd983a768b11 - -
> > -] Filter RamFilter returned 3 host(s) get_filtered_objects
> > /usr/lib/python2.7/site-packages/nova/filters.py:84
> > 2015-11-06 11:18:17.956 59494 DEBUG nova.filters
> > [req-9e20f8a9-384f-45c2-aa99-2d7b3100c98d
> > 9340dc4e70a14aeb82013e5a1631de80 d5ecb0eea96f4996b565fd983a768b11 - -
> > -] Filter ComputeFilter returned 3 host(s) get_filtered_objects
> > /usr/lib/python2.7/site-packages/nova/filters.py:84
> > 2015-11-06 11:18:17.956 59494 DEBUG nova.filters
> > [req-9e20f8a9-384f-45c2-aa99-2d7b3100c98d
> > 9340dc4e70a14aeb82013e5a1631de80 d5ecb0eea96f4996b565fd983a768b11 - -
> > -] Filter ComputeCapabilitiesFilter returned 3 host(s)
> > get_filtered_objects
> > /usr/lib/python2.7/site-packages/nova/filters.py:84
> > 2015-11-06 11:18:17.956 59494 DEBUG nova.filters
> > [req-9e20f8a9-384f-45c2-aa99-2d7b3100c98d
> > 9340dc4e70a14aeb82013e5a1631de80 d5ecb0eea96f4996b565fd983a768b11 - -
> > -] Filter ImagePropertiesFilter returned 3 host(s)
> > get_filtered_objects
> > /usr/lib/python2.7/site-packages/nova/filters.py:84
> > 2015-11-06 11:18:17.956 59494 DEBUG nova.filters
> > [req-9e20f8a9-384f-45c2-aa99-2d7b3100c98d
> > 9340dc4e70a14aeb82013e5a1631de80 d5ecb0eea96f4996b565fd983a768b11 - -
> > -] Filter ServerGroupAntiAffinityFilter returned 3 host(s)
> > get_filtered_objects
> > /usr/lib/python2.7/site-packages/nova/filters.py:84
> > 2015-11-06 11:18:17.956 59494 DEBUG nova.filters
> > [req-9e20f8a9-384f-45c2-aa99-2d7b3100c98d
> > 9340dc4e70a14aeb82013e5a1631de80 d5ecb0eea96f4996b565fd983a768b11 - -
> > -] Filter ServerGroupAffinityFilter returned 3 host(s)
> > get_filtered_objects
> > /usr/lib/python2.7/site-packages/nova/filters.py:84
> > 2015-11-06 11:18:17.957 59494 DEBUG nova.filters
> > [req-9e20f8a9-384f-45c2-aa99-2d7b3100c98d
> > 9340dc4e70a14aeb82013e5a1631de80 d5ecb0eea96f4996b565fd983a768b11 - -
> > -] Filter PciPassthroughFilter returned 3 host(s) get_filtered_objects
> > /usr/lib/python2.7/site-packages/nova/filters.py:84*2015-11-06
> > 11:18:17.959 59494 DEBUG nova.filters
> > [req-9e20f8a9-384f-45c2-aa99-2d7b3100c98d
> > 9340dc4e70a14aeb82013e5a1631de80 d5ecb0eea96f4996b565fd983a768b11 - -
> > -] Filter NUMATopologyFilter returned 2 host(s) get_filtered_objects
> > /usr/lib/python2.7/site-packages/nova/filters.py:84*
> >
> > Any help would be appreciated.
>
> This looks like a successful run (still 2 hosts returned after
> NUMATopologyFilter)? Or did were you expecting the host filtered out by
> PciPassthroughFilter to still be in scope?
>
> Thanks,
>
> --
> Steve Gordon,
> Sr. Technical Product Manager,
> Red Hat Enterprise Linux OpenStack Platform
>
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