[nova] update_resources_interval parameter

Arnaud Morin arnaud.morin at gmail.com
Thu Jun 15 09:47:22 UTC 2023


Hey team,

I'd like to understand the stakes behing the update_resources_interval
parameter ([1])

We decided on our side to increase this value from 60sec to 600sec (see
[2]).

What I understand is that is will "delay" the update of metrics on nova
side.
I mostly think that these metrics are used by filter scheduler to select
the best host when scheduling.

Is there anything else it can affect?

Cheers,
Arnaud.


[1] https://docs.openstack.org/nova/latest/configuration/config.html#DEFAULT.update_resources_interval
[2] https://review.opendev.org/c/openstack/large-scale/+/886166



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