From owner-freebsd-questions@FreeBSD.ORG Wed Nov 30 11:37:50 2005 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CC43D16A41F for ; Wed, 30 Nov 2005 11:37:50 +0000 (GMT) (envelope-from marco.calviani@gmail.com) Received: from wproxy.gmail.com (wproxy.gmail.com [64.233.184.200]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9170E43D7C for ; Wed, 30 Nov 2005 11:37:47 +0000 (GMT) (envelope-from marco.calviani@gmail.com) Received: by wproxy.gmail.com with SMTP id 36so103359wra for ; Wed, 30 Nov 2005 03:37:43 -0800 (PST) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:mime-version:content-type:content-transfer-encoding:content-disposition; b=LUclZNiybtzGE6cJgfDgM47Es38UAFCdsrmbfTxawZvgL91OjVpd2Rak6CJR7PZb9CmowrpDy8f1Vmk0QawQ6e50X5ffR2/RxS5rI3X03LX7vONNfQb6Rfo5ghBtP4FaeVEbyAKmlRIbd2shucvY5QSvPOJtywYsovI67vD/EgU= Received: by 10.65.96.7 with SMTP id y7mr49231qbl; Wed, 30 Nov 2005 03:37:43 -0800 (PST) Received: by 10.65.243.16 with HTTP; Wed, 30 Nov 2005 03:37:43 -0800 (PST) Message-ID: Date: Wed, 30 Nov 2005 12:37:43 +0100 From: Marco Calviani To: freebsd-questions@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Cc: freebsd-acpi@freebsd.org, freebsd-stable@freebsd.org Subject: cpufreq and changing driver 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: Wed, 30 Nov 2005 11:37:51 -0000 Hi, having seen on the cpufreq(4) man page that there is more than one driver that is currently supported. In particular having a centrino processor, i would like to use the est driver. Currently, by default, the running driver is the one that comes with acpi (AFAIU), and i'm using powerd to control the cpu frequency in adaptive mode. In particular doing comparison with the linux case in which i have cpufreq with speedstep-centrino driver and the ondemand governor, in this case the system is much more responsive and also the fans runs much more quieter (although i cannot rely on proven data since i don't know any benchmark program). In particular i understood that the ondemand governor responds to the system much faster that powerd is able to do. Is there someone who can share some impression or thoughts? Best regards, MC