From owner-freebsd-questions@FreeBSD.ORG Fri Apr 23 05:13:16 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4DDAF16A4CE for ; Fri, 23 Apr 2004 05:13:16 -0700 (PDT) Received: from munk.nu (mail.munk.nu [213.152.51.194]) by mx1.FreeBSD.org (Postfix) with ESMTP id D315343D1F for ; Fri, 23 Apr 2004 05:13:15 -0700 (PDT) (envelope-from munk@munk.nu) Received: from munk by munk.nu with local (Exim 4.32; FreeBSD) id 1BGzYO-000B2Y-38; Fri, 23 Apr 2004 13:13:12 +0100 Date: Fri, 23 Apr 2004 13:13:11 +0100 From: Jez Hancock To: hugle Message-ID: <20040423121311.GB41702@munk.nu> Mail-Followup-To: hugle , freebsd-questions@freebsd.org References: <159171051438.20040423090456@vkt.lt> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <159171051438.20040423090456@vkt.lt> User-Agent: Mutt/1.5.6i Sender: Jez Hancock cc: freebsd-questions@freebsd.org Subject: Re: microuptime() went backwards X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 23 Apr 2004 12:13:16 -0000 On Fri, Apr 23, 2004 at 09:04:56AM +0300, hugle wrote: > SOmetimes I see such messages in dmesg. > > perl# dmesg > uptime() went backwards (1574174.333073 -> 1573478.944788) > > what they mean? and what causes them to appear ? > is it good or bad?? :) I'd always presumed these messages occured on my machine because the ntpd (network time protocol daemon) had adjusted the system clock. I can't actually tell you for sure since the messages aren't logged by syslog here so there's no easy way of comparing the times to see if they correspond to the ntpd adjustments. Check to see if you have ntpd running - if so that's probably the reason for the messages. -- Jez Hancock - System Administrator / PHP Developer http://munk.nu/ http://jez.hancock-family.com/ - Another FreeBSD Diary http://ipfwstats.sf.net/ - ipfw peruser traffic logging