From owner-freebsd-stable@FreeBSD.ORG Thu Jan 12 23:57:44 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 C680A16A41F for ; Thu, 12 Jan 2006 23:57:44 +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 0262543D46 for ; Thu, 12 Jan 2006 23:57:43 +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 k0CNvgT5093025 (version=TLSv1/SSLv3 cipher=RC4-MD5 bits=128 verify=NO); Fri, 13 Jan 2006 10:27:42 +1030 (CST) (envelope-from doconnor@gsoft.com.au) From: "Daniel O'Connor" To: Bruno Ducrot Date: Fri, 13 Jan 2006 10:27:37 +1030 User-Agent: KMail/1.8.3 References: <43C5A261.1020407@rogers.com> <200601131010.59992.doconnor@gsoft.com.au> <20060112235415.GA16467@poupinou.org> In-Reply-To: <20060112235415.GA16467@poupinou.org> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1243814.9WEU2pgRUd"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200601131027.38149.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 23:57:44 -0000 --nextPart1243814.9WEU2pgRUd Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Fri, 13 Jan 2006 10:24, Bruno Ducrot wrote: > > Nearly all of the energy going into the CPU is disipated as heat. > > Of course. But the goal of powerd is to reduce power comsuption with > nearly no visible impact on performance. This imply that if the > runpercent is nearly 100%, then the processor will be put to full > frequency even though this can imply an overheat situation. > The role of acpi_thermal is to reduce frequency if the processor is > too hot, and this imply performance loss if runpercent is high. Yes, but the original poster was wondering why their CPU temperature didn't= go=20 down when the clock was (allegedly) very slow. =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 --nextPart1243814.9WEU2pgRUd Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQBDxuzy5ZPcIHs/zowRAgVDAKCe5yoFagkQgcAiQNCh8J+zh5Yr3QCdHljG lTlyq2cg/ZWzm7iOUB/ZTxs= =gzpM -----END PGP SIGNATURE----- --nextPart1243814.9WEU2pgRUd--