From owner-freebsd-acpi@FreeBSD.ORG Fri Aug 7 03:11:31 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 AD668106566C for ; Fri, 7 Aug 2009 03:11:31 +0000 (UTC) (envelope-from hiyorin@gmail.com) Received: from rv-out-0506.google.com (rv-out-0506.google.com [209.85.198.228]) by mx1.freebsd.org (Postfix) with ESMTP id 818C18FC31 for ; Fri, 7 Aug 2009 03:11:31 +0000 (UTC) Received: by rv-out-0506.google.com with SMTP id f9so312350rvb.43 for ; Thu, 06 Aug 2009 20:11:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from :user-agent:mime-version:to:subject:content-type :content-transfer-encoding; bh=XzxYhs1oMLTgo8rSIAJT590U3171eRFAdceh86ubA34=; b=Kxq4lBqLove8IkAerhvOQMRuoIBACziZmyRr3YBcmTVeUXSOk27qobFY1nbHQN8d9a Uef1MUmEjWQp6KsRlcwiSiqz8qxHYdp7NF1YKRJMn9lQ9+l+hwtsJZKQ7KcFss6QNJnW /KjOI0+t40kzFDAmwyO86RYVr414VQ+CWtKLA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; b=E1jV0/u53SbnypJnxsWET/wsR0kVAckBDkAkYyjmHOlEHUt4G7/f8OzmDYy12hmZGN c/Qx7f18l/xN1zTfMdmndB/X8u0marhdBP1cRb4yzfwHsY9LsYRSIxrTbCI1+/zU9ZZm KNK9JkgrRhj8bb9cuY+1rkrbZ+Fekz6/3UYFo= Received: by 10.141.22.21 with SMTP id z21mr241669rvi.279.1249612963235; Thu, 06 Aug 2009 19:42:43 -0700 (PDT) Received: from ?10.130.10.181? ([202.82.159.125]) by mx.google.com with ESMTPS id k41sm322583rvb.58.2009.08.06.19.42.42 (version=TLSv1/SSLv3 cipher=RC4-MD5); Thu, 06 Aug 2009 19:42:42 -0700 (PDT) Message-ID: <4A7B949B.7010003@gmail.com> Date: Fri, 07 Aug 2009 10:42:35 +0800 From: "C. C. Tang" User-Agent: Thunderbird 2.0.0.22 (Windows/20090605) MIME-Version: 1.0 To: freebsd-acpi@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: 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 03:11:31 -0000 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 Thanks very much. C.C.