Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757378AbZCOTxs (ORCPT ); Sun, 15 Mar 2009 15:53:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754978AbZCOTxj (ORCPT ); Sun, 15 Mar 2009 15:53:39 -0400 Received: from 2605ds1-ynoe.1.fullrate.dk ([90.184.12.24]:39848 "EHLO shrek.krogh.cc" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753069AbZCOTxj (ORCPT ); Sun, 15 Mar 2009 15:53:39 -0400 Message-ID: <49BD5CB6.1030700@krogh.cc> Date: Sun, 15 Mar 2009 20:53:26 +0100 From: Jesper Krogh User-Agent: Thunderbird 2.0.0.19 (X11/20090105) MIME-Version: 1.0 To: Thomas Gleixner CC: Linus Torvalds , john stultz , Linux Kernel Mailing List , Len Brown , Ingo Molnar Subject: Re: Linux 2.6.29-rc6 References: <49A6FEE2.90700@krogh.cc> <1f1b08da0902261319k7a60d80xaafc1101facfd2d9@mail.gmail.com> <49A70B24.6090706@krogh.cc> <1235685269.6811.11.camel@localhost.localdomain> <1235687483.6811.26.camel@localhost.localdomain> <49A78C79.304@krogh.cc> <1235766936.7402.5.camel@localhost.localdomain> <49AD90E2.7050209@krogh.cc> <1236118969.6068.87.camel@localhost> <49AE9EA4.2080500@krogh.cc> <49AECA3B.5030503@krogh.cc> <1236193075.3793.63.camel@jstultz-laptop> <1236220759.6863.7.camel@localhost.localdomain> <1236221530.6863.9.camel@localhost.localdomain> <49B57F3D.5030008@krogh.cc> <49B6C2B8.7000407@krogh.cc> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1389 Lines: 40 Thomas Gleixner wrote: > slow calibration path on every boot on your machine. > > (tscmax - tscmin) / avg = 0.064 (result from third run) > > On my test machines I get values below 0.02 > > While it's statistically not really correct we still can use that info > to catch cases like we see on your machines. > >> While booting up I saw this one on the serial console.. >> root@quad12:~# hwclock --systohc >> Cannot access the Hardware Clock via any known method. >> Use the --debug option to see the details of our search for an access method. >> root@quad12:~# hwclock --systohc --debug >> hwclock from util-linux-ng 2.13.1 >> hwclock: Open of /dev/rtc failed, errno=2: No such file or directory. >> No usable clock interface found. >> Cannot access the Hardware Clock via any known method. > > Can you provide your .config file please ? http://krogh.cc/~jesper/config-2.6.29-rc8.txt I testet the attached patch.. and after 1.5 hours it seems to work. I'll remain on this one at least a day to see how it works. I'll keep it on for now and report back in 24 hours or so. Its still using tsc as clock-source. Jesper -- Jesper -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/