---
other:
  - |
    To allow for python3.7 support, the `designate-worker` service was changed
    from a `ThreadPoolExecutor` to a `GreenThreadPoolExecutor`. This should
    no impact for most deployments, but in some cases it may cause performance
    degredation. In these cases, tuning `[service:worker].workers` and
    `[service:worker].threads` alleviate the issues.