Date: Fri, 07 Aug 2009 11:01:05 -0500 From: Robert Noland <rnoland@FreeBSD.org> To: "C. C. Tang" <hiyorin@gmail.com> Cc: freebsd-acpi@freebsd.org Subject: Re: acpi_task_0 consuming cpu resource Message-ID: <1249660865.1773.168.camel@balrog.2hip.net> In-Reply-To: <4A7C0174.7060400@gmail.com> References: <4A7B949B.7010003@gmail.com> <1249615962.1773.150.camel@balrog.2hip.net> <4A7BA95F.6090405@gmail.com> <1249638688.1773.167.camel@balrog.2hip.net> <4A7C0174.7060400@gmail.com>
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On Fri, 2009-08-07 at 18:27 +0800, C. C. Tang wrote: > > 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. Yeah, IIRC coretemp is all I have gotten as well, but that is the important one. robert. > Thanks, > C.C. > -- Robert Noland <rnoland@FreeBSD.org> FreeBSD
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