Date: Mon, 26 Oct 1998 11:40:00 +1030 From: Greg Lehey <grog@lemis.com> To: Graeme Tait <graeme@echidna.com>, Studded <Studded@gorean.org>, FreeBSD Questions <freebsd-questions@FreeBSD.ORG> Cc: info@boatbooks.com Subject: Re: Time calibration ? Message-ID: <19981026114000.G16609@freebie.lemis.com> In-Reply-To: <363353AE.2772@echidna.com>; from Graeme Tait on Sun, Oct 25, 1998 at 08:37:02AM -0800 References: <Pine.NEB.3.96.981024182211.363c-100000@ds9.dreamhaven.org> <3632EBDA.FD5F1529@gorean.org> <363353AE.2772@echidna.com>
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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
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