[Bug 1706990] Re: With samba installed on Kubuntu 17.04, nmbd.service causes a 10 second boot time regression

[Nate Graham]

The network is wireless, managed entirely from the KDE control panel's
GUI.

If I `systemctl restart` the nmbd service, it comes up in the same way
every time, always saying it's supervising a non-child process. However,
the PID of that process changes with every restart. It's like the
restart makes something else start a new nmbd process. And I don't know
if the whole supervising-a-non-child-process thing is affecting the
issue at all, or if it's a red herring.

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Title:
  With samba installed on Kubuntu 17.04, nmbd.service causes a 10 second
  boot time regression

Status in samba package in Ubuntu:
  Incomplete

Bug description:
  I'm running Kubuntu 17.04. After installing Samba rsion 2:4.5.8+dfsg-
  0ubuntu0.17.04.4), my boot time has regressed from about 12 seconds to
  23 seconds. `systemd-blame` shows that the culprit is the nmbd
  service:

  $ systemd-analyze blame | head -n 5
           10.017s nmbd.service
            8.008s apt-daily.service
            3.010s iio-sensor-proxy.service
             561ms dev-nvme0n1p2.device
             554ms NetworkManager-wait-online.service


  The nmbd systemd logs show that the 10 seconds is spent looking for a
  non-child nmb process:

  $ systemctl status nmbd.service | tail -n 3
  Jul 26 19:49:24 Spectre systemd[1]: Starting Samba NMB Daemon...
  Jul 26 19:49:24 Spectre systemd[1]: nmbd.service: Supervising process 1091 which is not our child. We'll most likely not notice when it exits.
  Jul 26 19:49:34 Spectre systemd[1]: Started Samba NMB Daemon.

  
  If I uninstall samba, the problem disappears.

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