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Date:      Tue, 8 Apr 2014 21:16:02 +0700
From:      Alexey Dokuchaev <danfe@nsu.ru>
To:        John Hein <john.hein@microsemi.com>
Cc:        ppc@freebsd.org
Subject:   Re: System clock falls behind quickly on Mac mini G4
Message-ID:  <20140408141602.GA39088@regency.nsu.ru>
In-Reply-To: <21311.7096.419714.506103@gromit.timing.com>
References:  <20140328071714.GA45961@regency.nsu.ru> <CAFY7cWBCFmtx4Tsg3=mSJyscpk5nCY3S6Sxy52TKEoTmy1sFPA@mail.gmail.com> <CA%2BWntOtEoqG_RJ2D9vSb7mO-UfT13RZbAb04p6rV2mWLBu=H9Q@mail.gmail.com> <20140329100134.GA7863@regency.nsu.ru> <20140404144753.GA58190@regency.nsu.ru> <21311.7096.419714.506103@gromit.timing.com>

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On Fri, Apr 04, 2014 at 02:53:12PM -0600, John Hein wrote:
> Alexey Dokuchaev danfe-at-nsu.ru wrote at 21:47 +0700 on Apr 4, 2014:
> > Running ntpd(8) unfortunately does not make things better (well maybe it
> > helps a bit, but clock still drifts away pretty fast).  I guess my only
> > option is to run ntpdate(8) periodically. :-(
> 
> You could try chronyd vs. ntpd - the former works with a larger
> frequency error.  Untested by me.  I also don't think we have a port
> yet.

Thanks for suggestion; I'll take a look into chronyd and report of the
results.

> It may be that your mini G4 may have real clock issues - that would
> require some analysis to determine if that's real or a software bug.
> But chronyd might be a workaround (if it's not too hard to port) until
> someone who is motivated can do a more careful analysis.

True; I'll follow up with verbose dmesg(8) output in a separate email on
this thread; maybe it'll give some clues.

./danfe



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