Comment 1 for bug 1078371

Reviewed: https://review.openstack.org/16012
Committed: http://github.com/openstack/ceilometer/commit/454c486e01b7782d5e01ed45dca00528865d929f
Submitter: Jenkins
Branch: master

commit 454c486e01b7782d5e01ed45dca00528865d929f
Author: Eoghan Glynn <email address hidden>
Date: Tue Nov 13 20:20:19 2012 +0000

    Determine instance cores from public flavors API

    Fixes bug 1078371

    Previously the flavor vcpus used in the CPU utilization metering
    was available from the nova DB instance representation.

    Now that we retrieve the on-host instances from the public nova API
    as opposed to the DB, we need to retrieve the flavor vcpus from
    the flavors API.

    Note that it's a known issue with nova that a flavor associated
    with a running instance can be deleted and re-created with the
    same ID but a different resource configuration (in this case, a
    different number of cores would led to an incorrect CPU util
    calculation). This will be addressed in a future nova patch.

    Change-Id: I093acb94a4818f671782a3cb4e2c846f29b8cec5