Add information about nova setting update_resources_interval
At large scale, we noticed that nova-compute was sending a lot of messages to conductor. Tuning the update_resources_interval parameter helped us drastically reducing the load on rabbit and nova side. Signed-off-by: Arnaud Morin <arnaud.morin@ovhcloud.com> Change-Id: Id4405691dcd4051ec64a448a82896c4f3e2a9594
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@ -278,3 +278,18 @@ So the recommendation is to drastically lower this value to get rid of transient
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rabbit_transient_queues_ttl = 60
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update_resources_interval
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^^^^^^^^^^^^^^^^^^^^^^^^^
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This is a nova settings: https://docs.openstack.org/nova/latest/configuration/config.html#DEFAULT.update_resources_interval
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This option specifies how often the update_available_resource periodic task should run.
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The default periodic interval is 60 seconds, which could be too often for large-scale.
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The recommendation is to increase this value to something that would fit your needs, like 600 secs:
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.. code-block:: console
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update_resources_interval = 600
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