[openstack-dev] [placement][nova] Decision time on granular request groups for like resources
Balázs Gibizer
balazs.gibizer at ericsson.com
Thu Apr 19 08:38:03 UTC 2018
On Thu, Apr 19, 2018 at 12:45 AM, Eric Fried <openstack at fried.cc> wrote:
>> I have a feeling we're just going to go back and forth on this, as
>> we
>> have for weeks now, and not reach any conclusion that is
>> satisfactory to
>> everyone. And we'll delay, yet again, getting functionality into
>> this
>> release that serves 90% of use cases because we are obsessing over
>> the
>> 0.01% of use cases that may pop up later.
>
> So I vote that, for the Rocky iteration of the granular spec, we add a
> single `proximity={isolate|any}` qparam, required when any numbered
> request groups are specified. I believe this allows us to satisfy the
> two NUMA use cases we care most about: "forced sharding" and "any
> fit".
> And as you demonstrated, it leaves the way open for finer-grained and
> more powerful semantics to be added in the future.
Can the proximity param specify relationship between the un-numbered
and the numbered groups as well or only between numbered groups?
Besides that I'm +1 about proxyimity={isolate|any}
Cheers,
gibi
>
> -efried
>
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