From owner-freebsd-acpi@FreeBSD.ORG Fri Aug 7 10:27:04 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 D8E261065672; Fri, 7 Aug 2009 10:27:04 +0000 (UTC) (envelope-from hiyorin@gmail.com) Received: from rv-out-0506.google.com (rv-out-0506.google.com [209.85.198.227]) by mx1.freebsd.org (Postfix) with ESMTP id A1EBD8FC16; Fri, 7 Aug 2009 10:27:04 +0000 (UTC) Received: by rv-out-0506.google.com with SMTP id f9so390729rvb.43 for ; Fri, 07 Aug 2009 03:27:04 -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:cc:subject:references:in-reply-to :content-type:content-transfer-encoding; bh=W0wqD4ovl5+rJTQDaOvJhf3ZqWtD3OqPZr3jLXoReqA=; b=m0GwjOTln8EdBlSyy1FE86//97alWNcTlpxm4wkb3mdiDIl3Ebw3Y6H/zgNWBnn0Q/ 4XvjYhiODF27dmUToDjMG2yevnsGqXBj8DeKh0VYaKgm9OYUf0iCzYVN5K63swiQWHga jNUVHB6QN+gyu+RUMJgoixF0xm+Ewhlbv5GII= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=LzUZmgo/9S36o0stiVxtJKC+1/RgVuKoABnuQq27QpmAu8RGf0X8526f5thICxxGqy mwDYxd+7XDA7Jcu1fnUHpl7iUWsbhvWj/+sTPOqKYp5sAoh6xiTbxm/4OYkZwwTyhp35 O9aQnkxQqrBuEw/gr3Igh8vdZLAqyPawx09sU= Received: by 10.140.128.1 with SMTP id a1mr404959rvd.227.1249640824363; Fri, 07 Aug 2009 03:27:04 -0700 (PDT) Received: from ?10.130.10.181? ([202.82.159.125]) by mx.google.com with ESMTPS id l31sm5447407rvb.44.2009.08.07.03.27.03 (version=TLSv1/SSLv3 cipher=RC4-MD5); Fri, 07 Aug 2009 03:27:03 -0700 (PDT) Message-ID: <4A7C0174.7060400@gmail.com> Date: Fri, 07 Aug 2009 18:27:00 +0800 From: "C. C. Tang" User-Agent: Thunderbird 2.0.0.22 (Windows/20090605) MIME-Version: 1.0 To: Robert Noland References: <4A7B949B.7010003@gmail.com> <1249615962.1773.150.camel@balrog.2hip.net> <4A7BA95F.6090405@gmail.com> <1249638688.1773.167.camel@balrog.2hip.net> In-Reply-To: <1249638688.1773.167.camel@balrog.2hip.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit 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 10:27:05 -0000 > Not sure then... I've got that board swapped out for a VIA board right > now. It tends to be noisy enough in my office with all the other fans > running that I really can't hear that one. I did have the smart fan > control enabled on both the case fan and cpu fan. It also periodically > rebuilds lots of ports or kernels with -j 5, so if it was going to heat > up, that should do it... If I can dig up a spare case and power, I'll > hook it back up and see if I can break it. Otherwise it will have to > wait until I get done with the VIA driver... I haven't really had any > issues that I can think of with that board, other than it is a bit slow > for compiling. It runs amd64 just fine. Really thanks for your reply. I will keeping watching it to see what situation in which the problem will happen. I am running on i386 version and I think the compile speed is OK for me. Anyway it is not a very fast CPU :) > Just remembering an issue that I had with some old p4 boxes though. On > those boxes, when they got hot, they would trigger an acpi message that > was picked up by devd. There was no way to throttle the messages, so it > would work the cpu as hard as it could, processing the messages. The > only solution at that point was to power it off for a few minutes while > it cooled off and not work it too hard. That sounds like what you are > seeing. Are you seeing messages in syslog? I have just done a # stress --cpu 1 --io 1 --vm 1 -d 1 for several hours on the machine. Although it is not quite stressful, I think it is enough for it to reach 100% load. But I didn't notice any such warning in the system log and the acpi_task_0 problem didn't appear... By the way I cannot read any temperature from acpi or smbus except coretemp. (may be I loaded wrong driver?) So I am not sure how hot did the system got. Thanks, C.C.