From owner-freebsd-questions@FreeBSD.ORG Mon Jul 7 14:22:32 2014 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id C60DEEFC for ; Mon, 7 Jul 2014 14:22:32 +0000 (UTC) Received: from relay2.tomsk.ru (mail.sibptus.tomsk.ru [212.73.124.5]) by mx1.freebsd.org (Postfix) with ESMTP id 310A32ADE for ; Mon, 7 Jul 2014 14:22:31 +0000 (UTC) X-Virus-Scanned: by clamd daemon 0.98.1 for FreeBSD at relay2.tomsk.ru Received: from admin.sibptus.tomsk.ru (account sudakov@sibptus.tomsk.ru [212.73.125.240] verified) by relay2.tomsk.ru (CommuniGate Pro SMTP 5.1.16) with ESMTPSA id 35940515 for freebsd-questions@freebsd.org; Mon, 07 Jul 2014 21:22:30 +0700 Received: from admin.sibptus.tomsk.ru (sudakov@localhost [127.0.0.1]) by admin.sibptus.tomsk.ru (8.14.7/8.14.7) with ESMTP id s67EMU7Z077797 for ; Mon, 7 Jul 2014 21:22:30 +0700 (NOVT) (envelope-from vas@mpeks.tomsk.su) Received: (from sudakov@localhost) by admin.sibptus.tomsk.ru (8.14.7/8.14.7/Submit) id s67EMU7c077796 for freebsd-questions@freebsd.org; Mon, 7 Jul 2014 21:22:30 +0700 (NOVT) (envelope-from vas@mpeks.tomsk.su) X-Authentication-Warning: admin.sibptus.tomsk.ru: sudakov set sender to vas@mpeks.tomsk.su using -f Date: Mon, 7 Jul 2014 21:22:30 +0700 From: Victor Sudakov To: freebsd-questions@freebsd.org Subject: Re: Updating and displaying CMOS clock Message-ID: <20140707142230.GB77559@admin.sibptus.tomsk.ru> References: <20140706153206.GA46262@admin.sibptus.tomsk.ru> <20140707130816.32fd9af2@gumby.homeunix.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: AO "Svyaztransneft", SibPTUS X-PGP-Key: http://www.dreamwidth.org/pubkey?user=victor_sudakov X-PGP-Fingerprint: 10E3 1171 1273 E007 C2E9 3532 0DA4 F259 9B5E C634 User-Agent: Mutt/1.5.21 (2010-09-15) X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Jul 2014 14:22:32 -0000 Trond Endrest?l wrote: > > > On Sun, 6 Jul 2014 22:32:07 +0700 > > Victor Sudakov wrote: > > > > > > > And no, contrary to popular belief, the correction of the CMOS clock > > > does not happen automatically in FreeBSD even if ntpd is running. > > > > Are you sure about that? That used to be the case, but I thought it was > > fixed in 10-CURRENT. > > > > I haven't set my hardware clock manually in more than a year, and it's > > out by less than a second. > > Check out /etc/crontab and the execution of adjkerntz(8). According to the man page, "adjkerntz -a" is used to update the local time CMOS clock and kernel machdep.adjkerntz variable when time zone changes occur, e.g., when entering or leaving daylight savings time. Does it to any CMOS clock correction at other times? BTW Russia is not using daylight savings time, so the changes of "adjkerntz -a" doing anything useful are slim. -- Victor Sudakov, VAS4-RIPE, VAS47-RIPN sip:sudakov@sibptus.tomsk.ru