Re: ACPI using too much CPU on idle system

On Mon, Mar 24, 2003 at 01:20:40PM -0800, Kris Kennaway wrote:
> top -S shows the following on my machine:
> 
> CPU states:  0.8% user,  0.0% nice, 80.3% system, 12.9% interrupt,  6.1% idle
> 
>   PID USERNAME PRI NICE   SIZE    RES STATE    TIME   WCPU    CPU COMMAND
>    11 root     -16    0     0K    12K RUN    563:23 32.23% 32.23% idle
>     7 root     -84    0     0K    12K actask   1:33 18.51% 18.51% acpi_task2
>     5 root     -84    0     0K    12K actask   1:33 18.21% 18.21% acpi_task0
>     6 root     -84    0     0K    12K actask   1:33 17.82% 17.82% acpi_task1
>    21 root     -68 -187     0K    12K WAIT     0:55  4.98%  4.98% irq9: fxp0 atapci0*
>    17 root     -24 -143     0K    12K WAIT     0:06  0.83%  0.83% swi6: acpitaskq
>  
> The machine is supposedly idle..no process, disk or network activity,
> so I can't see any reason for all this kernel CPU activity.  What is
> going on?  Is this some kind of software-emulated CPU step-down
> because ACPI has decided my CPU is too fast? :)

Hello, ACPI people?  I haven't had any response to this yet.

Kris