Date: Wed, 22 Aug 2001 22:50:25 +0200 From: Wilko Bulte <wkb@freebie.xs4all.nl> To: Thierry Herbelot <thierry@herbelot.com> Cc: hackers@FreeBSD.ORG Subject: Re: clock synchronization quality via NTP ? Message-ID: <20010822225025.A33131@freebie.xs4all.nl> In-Reply-To: <3B840C56.BDB7424D@herbelot.com>; from thierry@herbelot.com on Wed, Aug 22, 2001 at 09:47:34PM %2B0200 References: <3B840C56.BDB7424D@herbelot.com>
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On Wed, Aug 22, 2001 at 09:47:34PM +0200, Thierry Herbelot wrote: > Hello, > > I know FreeBSD can be used with great success for timing solutions (at > least two core members do it ?). > > has someone some performance data of the quality of system clock > synchronization, while using NTPd with a GPS reveiver and a hard 1PPS > signal ? > > More precisely : is it reasonable to hope having a system clock not > farther from the GPS clock by more than 50 micro-seconds ? Talk to Poul-Henning, he is the clock/time expert (phk@FreeBSD.org). Poul used to have some nice Web pages around on this subject but they were killed in a disk crash IIRC. -- | / o / / _ Arnhem, The Netherlands email: wilko@FreeBSD.org |/|/ / / /( (_) Bulte To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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