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[Cedric Brandily <1583266@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1583270 ***
    https://bugs.launchpad.net/bugs/1583270

This bug is an oslo.log bug not a neutron one as watch_log_file=True on
linux platforms use oslo_log.watchers.FastWatchedFileHandler which
depends on select.poll which is not eventlet-friendly

** Changed in: neutron
       Status: New => Invalid

** Also affects: oslo.log
   Importance: Undecided
       Status: New

** This bug has been marked a duplicate of bug 1583270
   watch-file=True causes blocking

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https://bugs.launchpad.net/bugs/1583266

Title:
  watch_log_file = true badness

Status in neutron:
  Invalid
Status in oslo.log:
  New

Bug description:
  We had:
  watch_log_file = true

  Set on our neutron agents. We have DVR enabled and were seeing
  significant slowdowns on fip changes. Kevin Benton and I narrowed it
  down to watch_log_file = true. It seems to be using blocking calls
  that prevent eventlet from performing asyncio properly. Setting it to
  false immediately resolved the issue.

  Can:
   1. The bug be fixed
   2. The gate checks be updated to set watch_log_file = true by default so that its tested in the future?

  Please?

  
  Further details:
  Mitaka RDO on CentOS 7.2. DVR enabled, L3HA disabled.

  Thanks,
  Kevin

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