releasenotes/notes/performance-improvements-42c34ebf4243312a.yaml


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---
features:
  - |
    Implement jinja filters for service dicts.
    Using select_services_enabled_and_mapped_to_host
    filter gets rid of some overhead caused by
    ansible skipping items in tasks.
    With bigger amount of hosts, this overhead
    is non-insignificant.
    Usage of service_enabled_and_mapped_to_host
    filter is mostly cosmetic and has no effect
    on the performance.
    `Blueprint performance-improvements <https://blueprints.launchpad.net/kolla-ansible/+spec/performance-improvements>`__