Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932086AbWAOQOZ (ORCPT ); Sun, 15 Jan 2006 11:14:25 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932091AbWAOQOY (ORCPT ); Sun, 15 Jan 2006 11:14:24 -0500 Received: from teetot.devrandom.net ([66.35.250.243]:61619 "EHLO teetot.devrandom.net") by vger.kernel.org with ESMTP id S932086AbWAOQOY (ORCPT ); Sun, 15 Jan 2006 11:14:24 -0500 Date: Sun, 15 Jan 2006 08:25:16 -0800 From: thockin@hockin.org To: Zan Lynx Cc: David Lang , Andreas Steinmetz , Sven-Thorsten Dietrich , Lee Revell , linux-kernel Subject: Re: Dual core Athlons and unsynced TSCs Message-ID: <20060115162516.GA21791@hockin.org> References: <1137178855.15108.42.camel@mindpipe> <20060113215609.GA30634@hockin.org> <1137190698.2536.65.camel@localhost.localdomain> <43C848C7.1070701@domdv.de> <1137315165.28041.12.camel@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1137315165.28041.12.camel@localhost> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 677 Lines: 14 On Sun, Jan 15, 2006 at 01:52:44AM -0700, Zan Lynx wrote: > A laptop user could also bind a process to a single CPU, and use the > scaling min/max values to lock CPU speed to a single value. The TSC may > still stop during HLT, but software must be handling that already. > > Wouldn't that provide an accurate TSC? monotonic but not linear. Also remember that the OS will use rdtsc here and there, and you can't affine the OS :) - 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/