From owner-freebsd-sparc Mon Jan 27 2: 8:19 2003 Delivered-To: freebsd-sparc@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3809637B401 for ; Mon, 27 Jan 2003 02:08:18 -0800 (PST) Received: from netlx010.civ.utwente.nl (netlx010.civ.utwente.nl [130.89.1.92]) by mx1.FreeBSD.org (Postfix) with ESMTP id D31B243ED8 for ; Mon, 27 Jan 2003 02:08:16 -0800 (PST) (envelope-from r.s.a.vandomburg@student.utwente.nl) Received: from wit377002 (wit377002.student.utwente.nl [130.89.165.107]) by netlx010.civ.utwente.nl (8.11.4/HKD) with SMTP id h0RA8Bb00525 for ; Mon, 27 Jan 2003 11:08:11 +0100 From: "Roderick van Domburg" To: "FreeBSD-sparc@FreeBSD. ORG" Subject: timecounter calibration Date: Mon, 27 Jan 2003 11:09:03 +0100 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-UTwente-MailScanner: Found to be clean Sender: owner-freebsd-sparc@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org I've set up a nightly cron job to run ntpdate, and so every night I receive dandy cron output by mail. I've set my securelevel to 3, so it'll clamp any time adjustments to 1 second max. After a week or so of running this setup, I noticed a pattern. This output was on a box with a 3-day uptime: 27 Jan 03:00:05 ntpdate[58255]: step time server 62.4.94.211 offset 11.482178 sec You may notice that the offset, having been corrected two times before, is almost 12 and as such 3 * 4. And that's exactly what's been going on: every night, the clock skew equals a four-some seconds. So what I'm wondering is: is this due to an erred clock calibration or is my E250 clock timer hosed? Regards, Roderick To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-sparc" in the body of the message