From owner-freebsd-acpi@FreeBSD.ORG Tue May 1 20:12:51 2007 Return-Path: X-Original-To: freebsd-acpi@freebsd.org Delivered-To: freebsd-acpi@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 9BC1916A400 for ; Tue, 1 May 2007 20:12:51 +0000 (UTC) (envelope-from anderson@freebsd.org) Received: from mh1.centtech.com (moat3.centtech.com [64.129.166.50]) by mx1.freebsd.org (Postfix) with ESMTP id 6CA2113C4B8 for ; Tue, 1 May 2007 20:12:51 +0000 (UTC) (envelope-from anderson@freebsd.org) Received: from neutrino.centtech.com (neutrino.centtech.com [10.177.171.220]) by mh1.centtech.com (8.13.8/8.13.8) with ESMTP id l41KCoi7090316; Tue, 1 May 2007 15:12:50 -0500 (CDT) (envelope-from anderson@freebsd.org) Message-ID: <46379F42.3040700@freebsd.org> Date: Tue, 01 May 2007 15:12:50 -0500 From: Eric Anderson User-Agent: Thunderbird 2.0.0.0 (X11/20070420) MIME-Version: 1.0 To: Nate Lawson References: <4630BCC4.10601@freebsd.org> <4637860D.8060603@freebsd.org> <46378F75.6020007@root.org> <4637944C.5000709@freebsd.org> In-Reply-To: <4637944C.5000709@freebsd.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: ClamAV 0.88.4/3189/Tue May 1 11:02:13 2007 on mh1.centtech.com X-Virus-Status: Clean X-Spam-Status: No, score=-2.6 required=8.0 tests=AWL,BAYES_00 autolearn=ham version=3.1.6 X-Spam-Checker-Version: SpamAssassin 3.1.6 (2006-10-03) on mh1.centtech.com Cc: freebsd-acpi@freebsd.org Subject: Re: CPU temp AC vs Battery X-BeenThere: freebsd-acpi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: ACPI and power management development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 May 2007 20:12:51 -0000 On 05/01/07 14:26, Eric Anderson wrote: > On 05/01/07 14:05, Nate Lawson wrote: >> Eric Anderson wrote: >>> On 04/26/07 09:52, Eric Anderson wrote: >>>> Hi everyone, >>>> >>>> I've just noticed something very odd. On my Dell D820 laptop, when >>>> running off AC power from boot, by idle CPU temperature sits around 58C. >>>> >>>> If I unplug the power, and then plug it back in again, it will drop >>>> down to around 49-50C within a minute or two. It will stay there. >>>> With or without powerd running. >>> Another note: >>> >>> If I boot up without the AC adapter plugged in, it still runs hot. Only >>> the transition from AC -> battery seems to make a difference. >>> >>> Anyone with some ideas?? >> Does the temp change at all or is it stuck at 58C? If stuck, maybe the >> reading is incorrect and something in the AC line transition kicks the >> EC back into operation. > > The temp does change, about 10C. Hmm.. Seems also that my performance is reduced quite a bit. Doing some rather lame CPU benchmarks (ubench -c -s), seems that I get a score of around 200k on AC before unplugging, and about 104k after unplugging/plugging back in. It definitely feels slower too.. I don't see any speed changes or anything obvious in sysctl output. >> If it changes, then perhaps something is generating a lot of interrupts >> (perhaps SMI or SCI irqs). More debug prints from the acpi-ca Notify >> routine caller would help zero in. >> > > Just add some printfs in there and recompile/reboot? > > > Eric > _______________________________________________ > freebsd-acpi@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-acpi > To unsubscribe, send any mail to "freebsd-acpi-unsubscribe@freebsd.org"