From owner-freebsd-questions@FreeBSD.ORG Sun Jun 29 11:42:31 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A4DEE1065672 for ; Sun, 29 Jun 2008 11:42:31 +0000 (UTC) (envelope-from dangkm@gmail.com) Received: from ik-out-1112.google.com (ik-out-1112.google.com [66.249.90.182]) by mx1.freebsd.org (Postfix) with ESMTP id 376358FC1A for ; Sun, 29 Jun 2008 11:42:30 +0000 (UTC) (envelope-from dangkm@gmail.com) Received: by ik-out-1112.google.com with SMTP id c30so528412ika.3 for ; Sun, 29 Jun 2008 04:42:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from :user-agent:mime-version:to:subject:content-type :content-transfer-encoding; bh=rAWsTiQ668PAoWfDnP/fRX6T3ouvpLHyCYGdfLSRTaY=; b=npd3qWi5FLY/3aqgeLA3wEgTzuK/EPVJmOYIgHk8pWI+ktUZie53bl6fgpaOqDDTyY IqQo9MsRFj88hEojZ4Mr+09RGXyRERZ1njIIbamzGhGgsRu3sQSHejyfOTbNZD/PDOOi Y0hX1N9s4QRvmJgntoExEYcPbdDd7LjrQdG8g= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; b=L1Ovpwr1PBsk9De4r7/qBiq6+weh0UmF8RwpsXUF7xjzmab9POaSSwiHV95WnLRQXx l3tF9Df1OPJpLAcnvvlV7QU1TSfXdPbuWMp8IYrx4NeUCQxOZkxvM53npuTUVnVjrtRX kGRA7xChMnaWEiAlaaKp9wYiq+8wlHYbY5v90= Received: by 10.210.19.11 with SMTP id 11mr3059216ebs.32.1214739750164; Sun, 29 Jun 2008 04:42:30 -0700 (PDT) Received: from kemian.inf.ed.ac.uk ( [129.215.49.179]) by mx.google.com with ESMTPS id t12sm8697332gvd.10.2008.06.29.04.42.28 (version=TLSv1/SSLv3 cipher=RC4-MD5); Sun, 29 Jun 2008 04:42:29 -0700 (PDT) Message-ID: <48677529.8030300@gmail.com> Date: Sun, 29 Jun 2008 12:42:33 +0100 From: Kemian Dang User-Agent: Thunderbird 2.0.0.14 (X11/20080623) MIME-Version: 1.0 To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: debug.cpufreq.lowest doesn't work? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 29 Jun 2008 11:42:31 -0000 Hi all, I set "sysctl debug.cpufreq.lowest=800" but sysctl -a still told me that the CPU freq is at 300, though it will jump high if I am doing some heavy work. This reduce of performance makes me even have trouble on browsing website. Did I miss something important? 12:29pm kemian ~> sudo sysctl debug.cpufreq.lowest=800 debug.cpufreq.lowest: 0 -> 800 12:32pm kemian ~> sysctl -a | grep freq |grep cpu debug.cpufreq.verbose: 0 debug.cpufreq.lowest: 800 dev.cpu.0.freq: 300 dev.cpu.0.freq_levels: 1800/35000 1600/28347 1400/24803 1200/21260 1000/17716 800/8227 dev.cpufreq.0.%driver: cpufreq dev.cpufreq.0.%parent: cpu0 dev.cpufreq.1.%driver: cpufreq dev.cpufreq.1.%parent: cpu1 Best wishes, Kemian