From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760100AbXGIUyf (ORCPT ); Mon, 9 Jul 2007 16:54:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754715AbXGIUy1 (ORCPT ); Mon, 9 Jul 2007 16:54:27 -0400 Received: from mu-out-0910.google.com ([209.85.134.187]:40264 "EHLO mu-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754478AbXGIUy1 (ORCPT ); Mon, 9 Jul 2007 16:54:27 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=o2PxM+UXHZVXbGF+DI6nh3HP+Nt60A6QEpTYvAre/uGhSoRJ8ua2EI6+jviZ+BOiZvDL26mqXMprS6/1mTVJaGDzFdPnFwjxp6xYKg5iU1du54FhU059fdTewcjpYzWuSpImSaMK4XbJzSy/0Shmqv/xBbqM9/PiD6YmHPJ8d+Y= Message-ID: Date: Mon, 9 Jul 2007 22:54:25 +0200 From: "Pawel Dziepak" To: "Renato S. Yamane" Subject: Re: clocksource tsc unstable Cc: "Linux Kernel Mailing List" In-Reply-To: <4692981E.20303@mandic.com.br> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <46924CEB.7080108@mandic.com.br> <46925970.8080602@redhat.com> <4692981E.20303@mandic.com.br> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org As far as i know Pentium M processors have dynamically changed clock speed (ofc to save power). That's why kernel notice that TSC is unstable (it is indeed). On my Athlon 64 I have similar situation, because CPU frequency is dynamically changed. I don't think that there is an easy way to fix it (it is not even a bug), time-stamp counter is not perfect... Regards, Pawel