From owner-freebsd-stable@FreeBSD.ORG Tue Dec 19 16:57:49 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 0DF8A16A412 for ; Tue, 19 Dec 2006 16:57:49 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from alnrmhc13.comcast.net (alnrmhc13.comcast.net [204.127.225.93]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9793243CBB for ; Tue, 19 Dec 2006 16:57:43 +0000 (GMT) (envelope-from jdc@koitsu.dyndns.org) Received: from icarus.home.lan (c-67-174-220-97.hsd1.ca.comcast.net[67.174.220.97]) by comcast.net (alnrmhc13) with ESMTP id <20061219165742b1300q4l2me>; Tue, 19 Dec 2006 16:57:42 +0000 Received: by icarus.home.lan (Postfix, from userid 1000) id 0CAF11FA037; Tue, 19 Dec 2006 08:57:42 -0800 (PST) Date: Tue, 19 Dec 2006 08:57:42 -0800 From: Jeremy Chadwick To: Michael Proto Message-ID: <20061219165741.GA40101@icarus.home.lan> Mail-Followup-To: Michael Proto , freebsd-stable@freebsd.org References: <20061219124151.GA33385@icarus.home.lan> <20061219132032.GA66632@slackbox.xs4all.nl> <45880BA6.80907@jellydonut.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <45880BA6.80907@jellydonut.org> X-PGP-Key: http://jdc.parodius.com/pubkey.asc User-Agent: Mutt/1.5.13 (2006-08-11) Cc: freebsd-stable@freebsd.org Subject: Re: ntpd flipping between PLL and FLL mode X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Dec 2006 16:57:49 -0000 On Tue, Dec 19, 2006 at 10:56:22AM -0500, Michael Proto wrote: > An alternate workaround I've discovered is to use a maxpoll of 9 in > /etc/ntp.conf: > > server rolex.peachnet.edu maxpoll 9 > > Since implementing this I haven't seen any of the FLL/PLL flips in my logs. How would decreasing the polling time fix this? I do not understand the semantics/behaviour of NTP very well. Taken from the manpage: maxpoll maxpoll These options specify the minimum and maximum poll intervals for NTP messages, in seconds to the power of two. The maximum poll interval defaults to 10 (1,024 s), but can be increased by the maxpoll option to an upper limit of 17 (36.4 h). The minimum poll interval defaults to 6 (64 s), but can be decreased by the minpoll option to a lower limit of 4 (16 s). -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |