From owner-freebsd-stable@FreeBSD.ORG Wed Feb 17 18:49:29 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id AA578106568D for ; Wed, 17 Feb 2010 18:49:29 +0000 (UTC) (envelope-from torfinn.ingolfsen@broadpark.no) Received: from bgo1smout1.broadpark.no (bgo1smout1.broadpark.no [217.13.4.94]) by mx1.freebsd.org (Postfix) with ESMTP id 65F9B8FC2E for ; Wed, 17 Feb 2010 18:49:29 +0000 (UTC) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=US-ASCII Received: from bgo1sminn1.broadpark.no ([217.13.4.93]) by bgo1smout1.broadpark.no (Sun Java(tm) System Messaging Server 6.3-3.01 (built Jul 12 2007; 32bit)) with ESMTP id <0KY000BS41MGOPB0@bgo1smout1.broadpark.no> for freebsd-stable@freebsd.org; Wed, 17 Feb 2010 19:49:28 +0100 (CET) Received: from kg-v2.kg4.no ([80.203.92.186]) by bgo1sminn1.broadpark.no (Sun Java(tm) System Messaging Server 6.3-3.01 (built Jul 12 2007; 32bit)) with SMTP id <0KY000J321MGBJL0@bgo1sminn1.broadpark.no> for freebsd-stable@freebsd.org; Wed, 17 Feb 2010 19:49:28 +0100 (CET) Date: Wed, 17 Feb 2010 19:49:27 +0100 From: Torfinn Ingolfsen To: freebsd-stable@freebsd.org Message-id: <20100217194927.e3ec60ae.torfinn.ingolfsen@broadpark.no> In-reply-to: <20100212174452.2140cd72.torfinn.ingolfsen@broadpark.no> References: <20100211190652.6a66c618.torfinn.ingolfsen@broadpark.no> <20100211192515.GB13854@icarus.home.lan> <20100212132947.eb2af3d0.torfinn.ingolfsen@broadpark.no> <20100212131117.GA51905@icarus.home.lan> <20100212174452.2140cd72.torfinn.ingolfsen@broadpark.no> X-Mailer: Sylpheed 2.7.1 (GTK+ 2.18.7; amd64-portbld-freebsd8.0) X-Face: "t9w2,-X@O^I`jVW\sonI3.,36KBLZE*AL[y9lL[PyFD*r_S:dIL9c[8Y>V42R0"!"yb_zN,f#%.[PYYNq; m"_0v; ~rUM2Yy!zmkh)3&U|u!=T(zyv,MHJv"nDH>OJ`t(@mil461d_B'Uo|'nMwlKe0Mv=kvV?Nh@>Hb<3s_z2jYgZhPb@?Wi^x1a~Hplz1.zH Subject: Re: ntpd struggling to keep up - how to fix? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 17 Feb 2010 18:49:29 -0000 On Fri, 12 Feb 2010 17:44:52 +0100 Torfinn Ingolfsen wrote: > On Fri, 12 Feb 2010 05:11:17 -0800 > Jeremy Chadwick wrote: > > > Please try doing this: > > > > - stop ntpd > > - rm /var/db/ntpd.drift > > - sysctl kern.timecounter.hardware=ACPI-safe > > - start ntpd > > Thanks, I'm currently testing that. Results in 72 hours (or less) :-) Well, using ACPI-safe only get a small improvement, here are the lines from /var/log/messages: Feb 17 17:16:47 kg-f2 ntpd[912]: time reset +1.785920 s Feb 17 17:32:39 kg-f2 ntpd[912]: time reset +1.836376 s Feb 17 17:48:18 kg-f2 ntpd[912]: time reset +1.811593 s Feb 17 18:04:12 kg-f2 ntpd[912]: time reset +1.840545 s Feb 17 18:19:19 kg-f2 ntpd[912]: time reset +1.751837 s Feb 17 18:35:19 kg-f2 ntpd[912]: time reset +1.852328 s Feb 17 18:51:18 kg-f2 ntpd[912]: time reset +1.850928 s Feb 17 19:06:50 kg-f2 ntpd[912]: time reset +1.798706 s Feb 17 19:22:35 kg-f2 ntpd[912]: time reset +1.823697 s Feb 17 19:37:56 kg-f2 ntpd[912]: time reset +1.777376 s Unfortunately, it isn't enough to keep the machine in sync all the time. But it is better than HPET so I'll keep it. -- Torfinn