Clocks broken on Mac mini

Eric S. Raymond esr at thyrsus.com
Mon Jan 30 07:20:21 UTC 2017


Hal Murray <hmurray at megapathdsl.net>:
> 
> Both Linux (Debian) and FreeBSD have the same problem.
> 
> The symptom is that the drift goes to 500 PPM and that isn't enough so every 
> few minutes it steps the clock.
> 
> 29 Jan 18:12:01 ntpd[568]: 0.0.0.0 c61c 0c clock_step +0.623666 s
> 29 Jan 18:17:13 ntpd[568]: 0.0.0.0 c61c 0c clock_step +0.636564 s
> 29 Jan 18:22:23 ntpd[568]: 0.0.0.0 c61c 0c clock_step +0.717096 s
> 29 Jan 18:27:34 ntpd[568]: 0.0.0.0 c61c 0c clock_step +0.400740 s
> 29 Jan 18:33:45 ntpd[568]: 0.0.0.0 c61c 0c clock_step +0.718885 s
> 29 Jan 18:40:19 ntpd[568]: 0.0.0.0 c61c 0c clock_step +0.684023 s
> 29 Jan 18:48:24 ntpd[568]: 0.0.0.0 c61c 0c clock_step +0.648540 s
> 29 Jan 18:54:27 ntpd[568]: 0.0.0.0 c61c 0c clock_step +1.218112 s
> 
> I disabled ntp and let it run for a while.  I estimated 2500 ppm.

Well, that's disturbing. But hard to act on until we get a better
idea what's busted
-- 
		<a href="http://www.catb.org/~esr/">Eric S. Raymond</a>


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