From owner-freebsd-current Tue Mar 18 10:22:13 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 5B24A37B401 for ; Tue, 18 Mar 2003 10:22:12 -0800 (PST) Received: from postal3.es.net (postal3.es.net [198.128.3.207]) by mx1.FreeBSD.org (Postfix) with ESMTP id A067D43FAF for ; Tue, 18 Mar 2003 10:22:09 -0800 (PST) (envelope-from oberman@es.net) Received: from ptavv.es.net ([198.128.4.29]) by postal3.es.net (Postal Node 3) with ESMTP id MUA74016; Tue, 18 Mar 2003 10:22:08 -0800 Received: from ptavv (localhost [127.0.0.1]) by ptavv.es.net (Tachyon Server) with ESMTP id C8DF95D07; Tue, 18 Mar 2003 10:22:07 -0800 (PST) To: Craig Rodrigues Cc: David Malone , sjh@zorak.net, freebsd-current@FreeBSD.ORG Subject: Re: Clock running double time In-reply-to: Your message of "Sat, 15 Mar 2003 11:56:42 EST." <20030315165642.GA2946@attbi.com> Date: Tue, 18 Mar 2003 10:22:07 -0800 From: "Kevin Oberman" Message-Id: <20030318182207.C8DF95D07@ptavv.es.net> 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 > Date: Sat, 15 Mar 2003 11:56:42 -0500 > From: Craig Rodrigues > Sender: owner-freebsd-current@FreeBSD.ORG > > On Sat, Mar 15, 2003 at 03:51:09PM +0000, David Malone wrote: > > On Fri, Mar 14, 2003 at 11:14:51PM -0800, sjh@zorak.net wrote: > > > Has anyone ever seen this? My clock is running double time, that is, > > > each second it advances two seconds. Needless to say, ntpd can't sync > > > up with any servers. > > > > You almost certainly have a motherboard with bad ACPI (probably > > for with a K6 processor). Try adding: > > > > kern.timecounter.hardware: TSC > > The correct line to add to /etc/sysctl.conf is: > > kern.timecounter.hardware=TSC Can someone explain why TSC is preferred to i8254 (or why not)? R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message