Skip site navigation (1)Skip section navigation (2)
Date:      Thu, 06 Aug 2009 22:32:41 -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:  <1249615962.1773.150.camel@balrog.2hip.net>
In-Reply-To: <4A7B949B.7010003@gmail.com>
References:  <4A7B949B.7010003@gmail.com>

next in thread | previous in thread | raw e-mail | index | archive | help
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 <rnoland@FreeBSD.org>
FreeBSD




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?1249615962.1773.150.camel>