[Macpartners] 10.11.4: distnoted out of control

[Andy McPherson]

Good Morning!

Since upgrading many of my machines to 10.11.4 I started running into
problems where a handful of them would consistently get incredibly slow and
more often than not, users were greeted with a beachball when trying to
unlock their screen.

Via SSH I was able to find out it was the "distnoted" process (part of
notification services) that was eating up all the CPU. After killing it,
things would immediately go back to normal. I tried OS re-installs, fresh
installs + data migrations but the problem kept coming back. I ended up
installing a launchd script that will kill distnoted periodically which has
worked like a charm so far.

I still haven't been able to pinpoint the root cause (other than 10.11.4)
and apparently I'm not the only one with this problem:
https://discussions.apple.com/thread/7540087

I also heard from someone who reported the bug in January and told me the
issue persists in the 10.11.5 beta.

Has anyone else encountered this problem?

Regards,
Andy
-- 

Andy McPherson
Systems Administrator


77 Massachusetts Ave., 14N-308, Cambridge, MA 02139
andymcp at mit.edu | p: 617.253.9776 | f: 617.258.6189
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