From owner-freebsd-hackers Fri Jan 12 10:44: 4 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from garlic.cgf.net (adsl-209-76-108-196.dsl.snfc21.pacbell.net [209.76.108.196]) by hub.freebsd.org (Postfix) with ESMTP id 0D4C037B400 for ; Fri, 12 Jan 2001 10:43:46 -0800 (PST) Received: from cgf.net (garlic.themancini.net [192.168.26.7]) by garlic.cgf.net (8.9.3/8.9.3) with ESMTP id KAA19006 for ; Fri, 12 Jan 2001 10:45:10 -0800 (PST) (envelope-from tomb@cgf.net) Message-ID: <3A5EC113.B903E2AF@cgf.net> Date: Fri, 12 Jan 2001 00:32:19 -0800 From: tomb Reply-To: tomb@cgf.net X-Mailer: Mozilla 4.76 [en] (X11; U; FreeBSD 4.1-RELEASE i386) X-Accept-Language: en MIME-Version: 1.0 To: hackers@freebsd.org Subject: Kernel time drifting -0.3% to -50% from H/W clock. Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG HI, I sent a message about this to questions to no avail. So sorry if this is an inappropreate place but here is the problem. Dec 3 Upgared machine to FreeBSD 4.2 (i386) Dec 6 - Jan 2 away from machine. I logged in to find that the value of date was way out (-6 Days), at this point the machie was not running any type of time peering it was essentually stand-alone. I corrected the time manually using date. The next day I noticed the time was wrong again, and decided to run ntp to track the time on our master. It tried very hard to keep time but finally gave up and syslogged me that a manual time change would be necessary. This moring I find that the drift is -50% . I don't know much about how kernel time relates to bios time but I guess that there's a pashe locked loop in the software that is not getting feedback from the HW clock, but I'm just guessing. Can anybody explain what is happening? Thanks. Tom Brown To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message