From owner-freebsd-stable@FreeBSD.ORG Thu Jan 12 23:41:19 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C4C9716A41F for ; Thu, 12 Jan 2006 23:41:19 +0000 (GMT) (envelope-from doconnor@gsoft.com.au) Received: from cain.gsoft.com.au (cain.gsoft.com.au [203.31.81.10]) by mx1.FreeBSD.org (Postfix) with ESMTP id 796A643D5D for ; Thu, 12 Jan 2006 23:41:13 +0000 (GMT) (envelope-from doconnor@gsoft.com.au) Received: from inchoate.gsoft.com.au (inchoate.gsoft.com.au [203.31.81.21]) (authenticated bits=0) by cain.gsoft.com.au (8.13.5/8.13.4) with ESMTP id k0CNf1Kj092744 (version=TLSv1/SSLv3 cipher=RC4-MD5 bits=128 verify=NO); Fri, 13 Jan 2006 10:11:05 +1030 (CST) (envelope-from doconnor@gsoft.com.au) From: "Daniel O'Connor" To: Bruno Ducrot Date: Fri, 13 Jan 2006 10:10:51 +1030 User-Agent: KMail/1.8.3 References: <43C5A261.1020407@rogers.com> <43C5F328.4030507@rogers.com> <20060112134013.GC22983@poupinou.org> In-Reply-To: <20060112134013.GC22983@poupinou.org> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart2639375.PunIk5R02t"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200601131010.59992.doconnor@gsoft.com.au> X-Spam-Score: -1.36 () ALL_TRUSTED X-Scanned-By: MIMEDefang 2.54 on 203.31.81.10 Cc: Mike Jakubik , freebsd-stable@freebsd.org Subject: Re: powerd effectiveness X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Jan 2006 23:41:19 -0000 --nextPart2639375.PunIk5R02t Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Fri, 13 Jan 2006 00:10, Bruno Ducrot wrote: > > Thats the correct one, it is 75mhz. I was suspecting hardwares > > limitations in terms of modulating the frequency quickly enough. Just > > wanted to make sure. > > What you have noticed is acpi_throttle(4). The combinaison of > some VIA chipset and AMD processors give 16 frequencies. > powerd(8) is not designed for thermal stuff, and will never be. > It's up to acpi_thermal(4) to cool the processor if needed. > > Note that I think acpi_throttle(4) can only be used for cooling a > processor. I don't think it is usefull for power comsuption at all for > which > powerd(4) is designed. Some other people may have different opinion of > course. I don't see how reducing power consumption could NOT affect the temperature. Nearly all of the energy going into the CPU is disipated as heat. > You may also want to check if sysutlis/fvcool can help you if setting > the above sysctl is not possible (but don't mix the two). How come? (I am just curious :) =2D-=20 Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C --nextPart2639375.PunIk5R02t Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQBDxukL5ZPcIHs/zowRAtDqAJ9cjn5Pcz8U1EBFF2p98HV/YA3JggCglSyU FGLJon5AD5NkFD8ncrVQvdM= =kSm7 -----END PGP SIGNATURE----- --nextPart2639375.PunIk5R02t--