From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751098AbVH1DiM (ORCPT ); Sat, 27 Aug 2005 23:38:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751103AbVH1DiM (ORCPT ); Sat, 27 Aug 2005 23:38:12 -0400 Received: from mx1.redhat.com ([66.187.233.31]:34271 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S1751098AbVH1DiL (ORCPT ); Sat, 27 Aug 2005 23:38:11 -0400 Date: Sat, 27 Aug 2005 23:38:02 -0400 From: Dave Jones To: Patrick Cc: LKML Subject: Re: Incorrect CPU Frequency in /proc/cpuinfo Message-ID: <20050828033802.GA17080@redhat.com> Mail-Followup-To: Dave Jones , Patrick , LKML References: <43112214.7070203@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <43112214.7070203@gmail.com> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Aug 27, 2005 at 09:31:48PM -0500, Patrick wrote: > There is a problem with the display of CPU Frequency in /proc/cpuinfo. > It displays the CPU Frequency correctly... until you change the speed > manually with the kernel's frequency scaling. Before I do this, my > frequency displayed in /proc/cpuinfo is: "3208.757", This is correct. > Then I: "||echo 600000 /sys/devices/cpu/cpu0/cpufreq/scaling_setspeed" > The file "scaling_setspeed" shows 600000, which is correct. My CPU does > change to that speed (I've run tests before and after, and temperature, > etc), yet /proc/cpuinfo shows no change, no matter what clock speed I > set it to. > .... > The modules that were modprobed at the time: > > p4_clockmod p4 clock modulation doesn't actually change the cpu frequency. > speedstep-lib This is a support library used by the other speedstep libs. (It's meant to be pulled in as a dependancy rather than directly modprobed) Your CPU isn't supported by the speedstep drivers, so loading this is pointless. > freq_table support lib for p4-clockmod. Dave