From owner-freebsd-acpi@FreeBSD.ORG Fri Aug 7 03:32:50 2009 Return-Path: Delivered-To: freebsd-acpi@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 669A1106566B for ; Fri, 7 Aug 2009 03:32:50 +0000 (UTC) (envelope-from rnoland@FreeBSD.org) Received: from gizmo.2hip.net (gizmo.2hip.net [64.74.207.195]) by mx1.freebsd.org (Postfix) with ESMTP id 29A758FC17 for ; Fri, 7 Aug 2009 03:32:49 +0000 (UTC) Received: from [192.168.1.4] (adsl-154-218-245.ard.bellsouth.net [72.154.218.245]) (authenticated bits=0) by gizmo.2hip.net (8.14.3/8.14.3) with ESMTP id n773Wlb8030891 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 6 Aug 2009 23:32:48 -0400 (EDT) (envelope-from rnoland@FreeBSD.org) From: Robert Noland To: "C. C. Tang" In-Reply-To: <4A7B949B.7010003@gmail.com> References: <4A7B949B.7010003@gmail.com> Content-Type: text/plain Organization: FreeBSD Date: Thu, 06 Aug 2009 22:32:41 -0500 Message-Id: <1249615962.1773.150.camel@balrog.2hip.net> Mime-Version: 1.0 X-Mailer: Evolution 2.26.3 FreeBSD GNOME Team Port Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-1.2 required=5.0 tests=AWL,BAYES_00,RCVD_IN_PBL, RCVD_IN_SORBS_DUL, RDNS_DYNAMIC, SPF_SOFTFAIL autolearn=no version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on gizmo.2hip.net Cc: freebsd-acpi@freebsd.org Subject: Re: acpi_task_0 consuming cpu resource 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: Fri, 07 Aug 2009 03:32:50 -0000 On Fri, 2009-08-07 at 10:42 +0800, C. C. Tang wrote: > Hi. > > I have a system with Intel D945GCLF2 motherboard with Atom CPU. > I found that when I enable auto speed regulation of case fan. > FreeBSD will have a process "acpi_task_0" which consume all resource of > one of the core of the CPU. > The fan seems fail to change RPM itself. Is there any solution to this > problem without disabling the auto speed regulation? > > PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU > COMMAND > 7 root 1 8 - 0K 8K CPU1 0 124:29 100.00% > acpi_task_0 > 12 root 1 171 ki31 0K 8K RUN 0 177:23 95.26% > idle: cpu0 > 11 root 1 171 ki31 0K 8K RUN 1 61:20 1.07% > idle: cpu1 I have one of these boards, but I haven't seen this with -CURRENT. There are known fan issues with some of the BIOS revisions for these boards. I would make sure you have the latest BIOS update and see if it resolves your issue. robert. > Thanks very much. > C.C. > _______________________________________________ > 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" -- Robert Noland FreeBSD