From owner-freebsd-current Tue Mar 11 22:14:51 2003 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 666F337B401 for ; Tue, 11 Mar 2003 22:14:50 -0800 (PST) Received: from critter.freebsd.dk (critter.freebsd.dk [212.242.86.163]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2010A43FB1 for ; Tue, 11 Mar 2003 22:14:49 -0800 (PST) (envelope-from phk@phk.freebsd.dk) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.12.8/8.12.8) with ESMTP id h2C6Ecsf023485; Wed, 12 Mar 2003 07:14:43 +0100 (CET) (envelope-from phk@phk.freebsd.dk) To: "Andrew P. Lentvorski, Jr." Cc: James Satterfield , current@FreeBSD.ORG Subject: Re: Time drift. From: "Poul-Henning Kamp" In-Reply-To: Your message of "Tue, 11 Mar 2003 16:24:57 PST." Date: Wed, 12 Mar 2003 07:14:38 +0100 Message-ID: <23484.1047449678@critter.freebsd.dk> Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG In message , "Andrew P. Lentvorski, Jr." writes: >An $8.00 wristwatch has much better time accuracy that your multi-$100 PC. That's because the crystal in your wristwatch is cut specially so that it has a flat temp-co at about 23-16 C, whereas the xtal in your computer is has a gradient all the way from 0 to 70 C. See: http://www.corningfrequency.com/library/vig/Vig-tutorial_files/frame.htm -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message