[nova] hw:numa_nodes question

Alvaro Soto alsotoes at gmail.com
Wed May 10 17:52:24 UTC 2023


Another good resource =)

https://that.guru/blog/cpu-resources/

On Wed, May 10, 2023 at 11:50 AM Alvaro Soto <alsotoes at gmail.com> wrote:

> I don't think so.
>
> ~~~
> The most common case will be that the admin only sets hw:numa_nodes and
> then the flavor vCPUs and memory will be divided equally across the NUMA
> nodes. When a NUMA policy is in effect, it is mandatory for the instance's
> memory allocations to come from the NUMA nodes to which it is bound except
> where overriden by hw:numa_mem.NN.
> ~~~
>
> Here are the implementation documents since Juno release:
>
>
> https://opendev.org/openstack/nova-specs/src/branch/master/specs/juno/implemented/virt-driver-numa-placement.rst
>
> https://opendev.org/openstack/nova-specs/commit/45252df4c54674d2ac71cd88154af476c4d510e1
> ?
>
>
> On Wed, May 10, 2023 at 11:31 AM hai wu <haiwu.us at gmail.com> wrote:
>
>> Is there any concern to enable 'hw:numa_nodes=1' on all flavors, as
>> long as that flavor can fit into one numa node?
>>
>>
>
> --
>
> Alvaro Soto
>
> *Note: My work hours may not be your work hours. Please do not feel the
> need to respond during a time that is not convenient for you.*
> ----------------------------------------------------------
> Great people talk about ideas,
> ordinary people talk about things,
> small people talk... about other people.
>


-- 

Alvaro Soto

*Note: My work hours may not be your work hours. Please do not feel the
need to respond during a time that is not convenient for you.*
----------------------------------------------------------
Great people talk about ideas,
ordinary people talk about things,
small people talk... about other people.
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