From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265109AbUELP2g (ORCPT ); Wed, 12 May 2004 11:28:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265105AbUELP2g (ORCPT ); Wed, 12 May 2004 11:28:36 -0400 Received: from firecat.admindu.de ([213.178.172.5]:28037 "EHLO mail.admindu.de") by vger.kernel.org with ESMTP id S265109AbUELP2F (ORCPT ); Wed, 12 May 2004 11:28:05 -0400 Message-ID: <40A242A6.4020002@kurtenba.ch> Date: Wed, 12 May 2004 17:28:38 +0200 From: clemens kurtenbach User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040413 MultiZilla/1.6.3.0d X-Accept-Language: de, en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: cpufreq and p4 prescott 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 Hi, i have problems scaling down my p4 prescott 2.8 GHz. In the /sys -tree all seems to be ok: [ck@holodeck:cpufreq] pwd /sys/devices/system/cpu/cpu0/cpufreq [ck@holodeck:cpufreq] ls -1 cpuinfo_max_freq cpuinfo_min_freq scaling_available_frequencies scaling_available_governors scaling_driver scaling_governor scaling_max_freq scaling_min_freq scaling_setspeed [ck@holodeck:cpufreq] cat * 2800000 350000 350000 700000 1050000 1400000 1750000 2100000 2450000 2800000 powersave userspace performance p4-clockmod userspace 2800000 350000 350000 [ck@holodeck:cpufreq] cat /proc/cpuinfo | grep Mhz cpu MHz : 2807.131 cpu MHz : 2807.131 As you can see tools like cpudyn or powernowd successfully change the entry in scaling_setspeed (also for cpu1), but the real cpu clock stays at 2.8GHz ? The cpudyn doc sais there's support for 'Intel Pentium 4, Intel Xeon' CPU's, but is there support for p4 prescott ? Has annyone here successfully scaled down a prescott ? regards, clee -- moqua [at] gmx.net moqua [at] kurtenba.ch