From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932620AbVJ0BoO (ORCPT ); Wed, 26 Oct 2005 21:44:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932621AbVJ0BoO (ORCPT ); Wed, 26 Oct 2005 21:44:14 -0400 Received: from e33.co.us.ibm.com ([32.97.110.151]:64210 "EHLO e33.co.us.ibm.com") by vger.kernel.org with ESMTP id S932620AbVJ0BoN (ORCPT ); Wed, 26 Oct 2005 21:44:13 -0400 Subject: Re: 2.6.14-rc5 (i386) + TSC, how to disable? time drift From: john stultz To: Vladimir Lazarenko Cc: Linux kernel In-Reply-To: <436029D4.9080601@lazarenko.net> References: <436029D4.9080601@lazarenko.net> Content-Type: text/plain Date: Wed, 26 Oct 2005 18:44:11 -0700 Message-Id: <1130377451.27168.386.camel@cog.beaverton.ibm.com> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 (2.2.3-2.fc4) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2005-10-27 at 03:13 +0200, Vladimir Lazarenko wrote: > Hello, > > To continue on my struggle with Dual-core - another interesting issue > popped up: time drift. > > SMP is enabled, TSC is enabled. It looks like you have ACPI PM and HPET enabled in the kernel, so it appears your system does not support alternative clocksources. You can check to see if a updated BIOS that makes ACPI PM or HPET available to the OS has been released, or request one from your hardware vendor. You might want to try idle=poll as well. thanks -john