Comment 4 for bug 2017114

I've encountered a similar issue in my openstack cluster.

After setting the cpu_allocation_ratio for the resource provider inventory in placement,it doesn't seem to affect the nova-scheduler.

Nova-scheduler always fetches cpu_allocation_ratio value from the compute_nodes table.

I'm wondering if we can patch some fields of the HostState instance by calling placement-api when the nova-scheduler initializes the HostState instance?

Considering performance issues in large-scale clusters, add a new handler in placement for bulk querying resource provider inventories seems like a good solution.
By consolidating multiple query transactions of providers into single transaction, we could potentially address performance concerns.