This was mentioned in CERNs blog on upgrading to kilo so marking as medium and marking for backport to liberty and kilo:
http://openstack-in-production.blogspot.com/ ** Changed in: nova Importance: Undecided => Medium ** Also affects: nova/kilo Importance: Undecided Status: New ** Also affects: nova/liberty Importance: Undecided Status: New -- 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/1524421 Title: Host Manager reads deleted instance info on startup Status in OpenStack Compute (nova): Fix Released Status in OpenStack Compute (nova) kilo series: In Progress Status in OpenStack Compute (nova) liberty series: In Progress Bug description: In Kilo we added the ability of the HostManager to track information about the instances on compute nodes, so that filters that needed this information didn't have to constantly make database calls to get it. However, the call that is used by HostManager will return deleted instance records, which is not useful information and degrades the performance. In a large deployment, the overhead of loading the records for thousands of deleted instances is causing serious performance issues. To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1524421/+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
