Public bug reported: The _sync_power_states periodic task queries all instances on the compute host:
https://github.com/openstack/nova/blob/4ad414f3b1216393301ef268a64e61ca1a3d5be9/nova/compute/manager.py#L6164 Then later it skips any that are in the middle of an operation: https://github.com/openstack/nova/blob/4ad414f3b1216393301ef268a64e61ca1a3d5be9/nova/compute/manager.py#L6269 We should avoid the roundtrip to the DB and RPC traffic to load up all of the instances on the compute host that are in the middle of a task and will just be skipped in code anyway and filter out the instance list by task_state in the initial DB query. ** Affects: nova Importance: Medium Status: Triaged ** Tags: compute low-hanging-fruit performance ** Tags added: low-hanging-fruit -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1572730 Title: The _sync_power_states task should filter out instances.task_state != None up front Status in OpenStack Compute (nova): Triaged Bug description: The _sync_power_states periodic task queries all instances on the compute host: https://github.com/openstack/nova/blob/4ad414f3b1216393301ef268a64e61ca1a3d5be9/nova/compute/manager.py#L6164 Then later it skips any that are in the middle of an operation: https://github.com/openstack/nova/blob/4ad414f3b1216393301ef268a64e61ca1a3d5be9/nova/compute/manager.py#L6269 We should avoid the roundtrip to the DB and RPC traffic to load up all of the instances on the compute host that are in the middle of a task and will just be skipped in code anyway and filter out the instance list by task_state in the initial DB query. To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1572730/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
