From owner-freebsd-questions@FreeBSD.ORG Mon Jan 21 13:10:07 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 C46D016A417 for ; Mon, 21 Jan 2008 13:10:07 +0000 (UTC) (envelope-from tijl@ulyssis.org) Received: from thumbler.kulnet.kuleuven.ac.be (thumbler.kulnet.kuleuven.ac.be [134.58.240.45]) by mx1.freebsd.org (Postfix) with ESMTP id 853DA13C447 for ; Mon, 21 Jan 2008 13:10:07 +0000 (UTC) (envelope-from tijl@ulyssis.org) Received: from localhost (localhost [127.0.0.1]) by thumbler.kulnet.kuleuven.ac.be (Postfix) with ESMTP id 90D1213865F; Mon, 21 Jan 2008 13:48:38 +0100 (CET) Received: from smtps01.kuleuven.be (smtpshost01.kulnet.kuleuven.be [134.58.240.74]) by thumbler.kulnet.kuleuven.ac.be (Postfix) with ESMTP id F2E331386F0; Mon, 21 Jan 2008 13:48:30 +0100 (CET) Received: from kalimero.kotnet.org (kalimero.kotnet.org [10.4.16.222]) by smtps01.kuleuven.be (Postfix) with ESMTP id 96BA531E702; Mon, 21 Jan 2008 13:48:30 +0100 (CET) Received: from kalimero.kotnet.org (kalimero.kotnet.org [127.0.0.1]) by kalimero.kotnet.org (8.14.2/8.14.2) with ESMTP id m0LCmUbE001619; Mon, 21 Jan 2008 13:48:30 +0100 (CET) (envelope-from tijl@ulyssis.org) X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Tijl Coosemans To: Wojciech Puchar Date: Mon, 21 Jan 2008 13:48:28 +0100 User-Agent: KMail/1.9.7 References: <20080121094451.N1777@wojtek.tensor.gdynia.pl> In-Reply-To: <20080121094451.N1777@wojtek.tensor.gdynia.pl> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200801211348.29679.tijl@ulyssis.org> X-Virus-Scanned: by KULeuven Antivirus Cluster Cc: Andreas Davour , freebsd-questions@freebsd.org Subject: Re: Throttle the CPU when the system is idle 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: Mon, 21 Jan 2008 13:10:07 -0000 On Monday 21 January 2008 09:45:26 Wojciech Puchar wrote: >> I have toyed a bit with the dev.cpu.0.freq sysctl setting, and tried >> to lower it automatically when the system load goes down. For some >> reason it don't seem to work, even though the script works for >> simple debug output. >> >> Anyone have tried to do something similar? > > no but anyway - freebsd halts CPU when unused, even at full frequency it > uses very little power wne unused. Throttling still made a huge difference on my systems.