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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: nova
       Status: Fix Committed => Fix Released

** Changed in: nova
    Milestone: None => kilo-3

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https://bugs.launchpad.net/bugs/1363119

Title:
  nova messaging queues slow in idle cluster

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  Each running nova-network service periodically calls
  fixed_ip_disassociate_all_by_timeout(). This searches all fixed ips,
  filtering on multiple columns. With a large number of fixed_ips, each
  call to this function can take several seconds to complete. With many
  hosts running nova-network, a cluster with little to no activity can
  experience prolonged delays in message processing, eventually
  rendering some or all hosts unresponsive to nova commands (boot
  instance, etc). The only column referenced in that query that is not
  represented in any existing index is updated_at; a new index including
  fixed_ips.updated_at is probably called for.

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