From owner-freebsd-ppc@FreeBSD.ORG Tue Apr 8 14:16:26 2014 Return-Path: Delivered-To: ppc@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 80BCE6AF for ; Tue, 8 Apr 2014 14:16:26 +0000 (UTC) Received: from mx.nsu.ru (mx.nsu.ru [84.237.50.39]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 265291659 for ; Tue, 8 Apr 2014 14:16:25 +0000 (UTC) Received: from regency.nsu.ru ([193.124.210.26]) by mx.nsu.ru with esmtp (Exim 4.72) (envelope-from ) id 1WXWol-00063Z-V7; Tue, 08 Apr 2014 21:16:09 +0700 Received: from regency.nsu.ru (localhost [127.0.0.1]) by regency.nsu.ru (8.14.2/8.14.2) with ESMTP id s38EG8f8040520; Tue, 8 Apr 2014 21:16:18 +0700 (NOVT) (envelope-from danfe@regency.nsu.ru) Received: (from danfe@localhost) by regency.nsu.ru (8.14.2/8.14.2/Submit) id s38EG3xQ040487; Tue, 8 Apr 2014 21:16:03 +0700 (NOVT) (envelope-from danfe) Date: Tue, 8 Apr 2014 21:16:02 +0700 From: Alexey Dokuchaev To: John Hein Subject: Re: System clock falls behind quickly on Mac mini G4 Message-ID: <20140408141602.GA39088@regency.nsu.ru> References: <20140328071714.GA45961@regency.nsu.ru> <20140329100134.GA7863@regency.nsu.ru> <20140404144753.GA58190@regency.nsu.ru> <21311.7096.419714.506103@gromit.timing.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <21311.7096.419714.506103@gromit.timing.com> User-Agent: Mutt/1.4.2.1i X-KLMS-Rule-ID: 1 X-KLMS-Message-Action: clean X-KLMS-AntiSpam-Lua-Profiles: 59421 [Apr 08 2014] X-KLMS-AntiSpam-Version: 5.3.6 X-KLMS-AntiSpam-Envelope-From: danfe@regency.nsu.ru X-KLMS-AntiSpam-Rate: 0 X-KLMS-AntiSpam-Status: not_detected X-KLMS-AntiSpam-Method: none X-KLMS-AntiSpam-Moebius-Timestamps: 2864770, 2864803, 2864751 X-KLMS-AntiSpam-Interceptor-Info: scan successful X-KLMS-AntiVirus: Kaspersky Security 8.0 for Linux Mail Server 8.0.0.455, not checked X-KLMS-AntiVirus-Status: NotChecked: not checked, skipped Cc: ppc@freebsd.org X-BeenThere: freebsd-ppc@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Porting FreeBSD to the PowerPC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Apr 2014 14:16:26 -0000 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