[nova][ironic] Lock-related performance issue with update_resources periodic job

Eric Fried openstack at fried.cc
Mon May 13 19:54:52 UTC 2019


Jason-

You may find this article interesting [1]. It isn't clear whether your
issue is the same as CERN's. But it would be interesting to know whether
setting [compute]resource_provider_association_refresh [2] to a very
large number (while leaving your periodic interval at its default) also
mitigates the issue.

Thanks,
efried

[1] https://techblog.web.cern.ch/techblog/post/placement-requests/
[2]
https://docs.openstack.org/nova/latest/configuration/config.html#compute.resource_provider_association_refresh



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