From owner-freebsd-amd64@FreeBSD.ORG Fri Dec 2 15:06:01 2011 Return-Path: Delivered-To: freebsd-amd64@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 75FC51065670 for ; Fri, 2 Dec 2011 15:06:01 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id 4DBFA8FC15 for ; Fri, 2 Dec 2011 15:06:01 +0000 (UTC) Received: from bigwig.baldwin.cx (bigwig.baldwin.cx [96.47.65.170]) by cyrus.watson.org (Postfix) with ESMTPSA id E176C46B09; Fri, 2 Dec 2011 10:06:00 -0500 (EST) Received: from John-Baldwins-MacBook-Air.local (c-68-36-150-83.hsd1.nj.comcast.net [68.36.150.83]) by bigwig.baldwin.cx (Postfix) with ESMTPSA id 5C4FDB91E; Fri, 2 Dec 2011 10:06:00 -0500 (EST) Message-ID: <4ED8E958.4040300@FreeBSD.org> Date: Fri, 02 Dec 2011 10:06:00 -0500 From: John Baldwin User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:8.0) Gecko/20111105 Thunderbird/8.0 MIME-Version: 1.0 To: tomdean@speakeasy.org References: <1322660796.327.34.camel@asus> <201111302018.30324.kowalczfbsd@gmail.com> <1322685757.327.45.camel@asus> In-Reply-To: <1322685757.327.45.camel@asus> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.7 (bigwig.baldwin.cx); Fri, 02 Dec 2011 10:06:00 -0500 (EST) Cc: freebsd-amd64@freebsd.org Subject: Re: CPUFreq X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 02 Dec 2011 15:06:01 -0000 On 11/30/11 3:42 PM, Thomas D. Dean wrote: > On Wed, 2011-11-30 at 20:18 +0100, Tomasz Kowalczyk wrote: >> Hello >> I think you don't even need to go 'back' to boot frequency. I suggest using >> powerd(8) to save some power and lower the temperature. >> Put it in /etc/rc.conf : >> powerd_enable="YES" >> powerd_flags="-a adp -m 800" >> > Making this change and starting powerd put me back to the state where > dev.cpu.0.temperature: 83.0C # changing 82..85 > dev.cpu.0.freq: 2301 > > I am confused about what side effect modified behavior when I changed > dev.cpu.0.freq initially. Somehow, this change got the system away from > the boot state. > > Since then, I have not seen the state where dev.cpu.0.temperature was in > the low to mid 70's. > > When I have dev.cpu.0.freq: 2012, dev.cpu.0.temperature is below 60C. > When I have dev.cpu.0.freq: 2301, dev.cpu.0.temperature is above 80C. > So, the load on the CPU is not the same as when in the boot state. > > I don't understand this. Did you try setting the frequency to 800 and seeing what the temperature was? Also, are the 2301 vs 2310 mismatches typos or did it actually set the speed to 2310 when you asked for 2301? -- John Baldwin