CPU Metrics not working

[Mohammed Naser]

The metrics collection on compute nodes is currently not working.

When the compute node creates the object to save, it is divided to be a value inside [0,1]. However, at the same time, when the scheduler needs to pull out the numbers, it divides it once again as it pulls the objects:

https://github.com/openstack/nova/blob/stable/liberty/nova/compute/resource_tracker.py#L437
https://github.com/openstack/nova/blob/stable/liberty/nova/compute/monitors/base.py#L60-L63
https://github.com/openstack/nova/blob/stable/liberty/nova/objects/monitor_metric.py#L68-L71

This essentially means that it always returns a value of zero as a metric, because it divides a small number again by 100.

[Mohammed Naser (mnaser)]

Actually, that was a bit misinformed, the problem seems to be here:

https://github.com/openstack/nova/blob/stable/liberty/nova/objects/monitor_metric.py#L40

[OpenStack Infra (hudson-openstack)]

Change abandoned by Mohammed Naser (<email address hidden>) on branch: master
Review: https://review.openstack.org/299708
Reason: Already fixed, replaced for a backport patch: https://review.openstack.org/#/c/299708/