From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264318AbTLYQBq (ORCPT ); Thu, 25 Dec 2003 11:01:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264320AbTLYQBq (ORCPT ); Thu, 25 Dec 2003 11:01:46 -0500 Received: from [195.62.234.69] ([195.62.234.69]:9695 "EHLO mail.nectarine.info") by vger.kernel.org with ESMTP id S264318AbTLYQBp (ORCPT ); Thu, 25 Dec 2003 11:01:45 -0500 Message-ID: <3FEB0A15.4000708@nectarine.info> Date: Thu, 25 Dec 2003 17:02:29 +0100 From: Giacomo Di Ciocco Organization: Nectarine Networks User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6b) Gecko/20031205 Thunderbird/0.4 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Albert Cahalan Cc: linux-kernel mailing list , wli@holomorphy.com Subject: Re: 2.6.0 "Losing too many ticks!" References: <1072321519.1742.328.camel@cube> In-Reply-To: <1072321519.1742.328.camel@cube> X-Enigmail-Version: 0.82.5.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Albert Cahalan wrote: > I sure wouldn't bet on that. More likely, he's simply > losing ticks. He has a Duron processor, which is > highly unlikely to be hooked up to some crummy > speed-changing hardware. > > I had a 1 GHz Pentium III box with the same problem. > Linux would give up on the perfectly-correct 1 GHz > clock source in favor of trying, and failing, to > count 1 kHz ticks from the crummy old PIT hardware. > Time loss got so bad that NTP would simply give up. > IDE activity may have had something to do with it. > > In his case, maybe ACPI polls something while > interrupts are off. > > This morning i tried Andrew Morton's kernel which implements the via-tsc-fix (ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.0/2.6.0-mm1/broken-out/via-tsc-fix.patch) the messages are still here (Unknown HZ value! (77) Assume 100.) but after doing some comparison with my home workstation which has almost the same hardware the speed seems to be returned on the standards. Regards. -- Giacomo Di Ciocco Nectarine Administrator Phone/Fax: (+39) 577663107 Web: http://www.nectarine.info Irc: irc.nectarine.info #nectarine Email: admin@nectarine.info (pgp.mit.edu)