From owner-freebsd-current@FreeBSD.ORG Mon Jun 30 16:59:28 2008 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D8538106564A for ; Mon, 30 Jun 2008 16:59:28 +0000 (UTC) (envelope-from ticso@cicely7.cicely.de) Received: from raven.bwct.de (raven.bwct.de [85.159.14.73]) by mx1.freebsd.org (Postfix) with ESMTP id 5DF808FC19 for ; Mon, 30 Jun 2008 16:59:28 +0000 (UTC) (envelope-from ticso@cicely7.cicely.de) Received: from cicely5.cicely.de ([10.1.1.7]) by raven.bwct.de (8.13.4/8.13.4) with ESMTP id m5UGxPFa099000 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 30 Jun 2008 18:59:26 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (cicely7.cicely.de [10.1.1.9]) by cicely5.cicely.de (8.14.2/8.14.2) with ESMTP id m5UGxMcq064239 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 30 Jun 2008 18:59:22 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (localhost [127.0.0.1]) by cicely7.cicely.de (8.14.2/8.14.2) with ESMTP id m5UGxMO4024613; Mon, 30 Jun 2008 18:59:22 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: (from ticso@localhost) by cicely7.cicely.de (8.14.2/8.14.2/Submit) id m5UGxLOq024612; Mon, 30 Jun 2008 18:59:21 +0200 (CEST) (envelope-from ticso) Date: Mon, 30 Jun 2008 18:59:21 +0200 From: Bernd Walter To: Poul-Henning Kamp Message-ID: <20080630165919.GR17364@cicely7.cicely.de> References: <20080630151740.GQ17364@cicely7.cicely.de> <7576.1214841263@critter.freebsd.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7576.1214841263@critter.freebsd.dk> X-Operating-System: FreeBSD cicely7.cicely.de 7.0-STABLE i386 User-Agent: Mutt/1.5.11 X-Spam-Status: No, score=-4.3 required=5.0 tests=ALL_TRUSTED=-1.8, AWL=0.071, BAYES_00=-2.599 autolearn=ham version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on spamd.cicely.de Cc: Bernd Walter , freebsd-current@freebsd.org, ticso@cicely.de Subject: Re: RTC problem X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: ticso@cicely.de List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 30 Jun 2008 16:59:28 -0000 On Mon, Jun 30, 2008 at 03:54:23PM +0000, Poul-Henning Kamp wrote: > In message <20080630151740.GQ17364@cicely7.cicely.de>, Bernd Walter writes: > > >But since ntpd only tunes the softclock and never sets the RTC it > >allows the RTC to run completely unsyncronized. > >Is there a way to regulary trigger a write to the RTC without > >disturbing ntpd, so that the offset never gets large? > > Ideally the adjkerntz we run in cron every night should do that. > > The easiest way would be to add a sysctl that when written does it, > thatway systems without adjkerntz could do it with a cronjob that > just sysctl's that variable directly. Ok - a sysctl which, when written calls resettodr(). Plus adding this call to adjkerntz independend of wall_cmos_clock existence. I wonder if people might forget about this when they remove adjkerntz from a small system. -- B.Walter http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.