From owner-freebsd-questions Sun Oct 25 17:13:19 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id RAA07870 for freebsd-questions-outgoing; Sun, 25 Oct 1998 17:13:19 -0800 (PST) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id RAA07845 for ; Sun, 25 Oct 1998 17:12:51 -0800 (PST) (envelope-from grog@freebie.lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.9.1/8.9.0) with ESMTP id LAA07765; Mon, 26 Oct 1998 11:40:04 +1030 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.1/8.9.0) id LAA19819; Mon, 26 Oct 1998 11:40:00 +1030 (CST) Message-ID: <19981026114000.G16609@freebie.lemis.com> Date: Mon, 26 Oct 1998 11:40:00 +1030 From: Greg Lehey To: Graeme Tait , Studded , FreeBSD Questions Cc: info@boatbooks.com Subject: Re: Time calibration ? References: <3632EBDA.FD5F1529@gorean.org> <363353AE.2772@echidna.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.91.1i In-Reply-To: <363353AE.2772@echidna.com>; from Graeme Tait on Sun, Oct 25, 1998 at 08:37:02AM -0800 WWW-Home-Page: http://www.lemis.com/~grog Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sunday, 25 October 1998 at 8:37:02 -0800, Graeme Tait wrote: > Studded wrote: > >> For instance, Bryce could synch ds9 and voyager as peers, while >> synching each to a stratum 2 server outside of his network. It's >> generally considered rude for an "average user" to synch to a stratum 1 >> server without permission. It's also essentially unecessary, as a good >> stratum 2 server will provide more accuracy than any of us will ever >> need. > > That's my question - what does accurate time matter for in a typical network, and > how accurate is good enough? Well, I suppose both questions are for you to answer. But let's ask them the other way round: We can give you accuracy to about 0.1 second more or less for free. Is that enough for you? > I ask because I'm involved in setting up a web/mail/ftp server, and > was wondering whether to use NTP. I notice quite a few Internet > hosts do not maintain accurate time, and are evidently just running > on their internal clocks, being perhaps a few minutes in error. My take is that you can get by without time synchronization, but why would you want to? It makes life a lot easier debugging past events if your log files show the correct time. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message