Re: [ACPI] ACPI on Presario 711: very weird behaviour (and partia l solution)

[Dominik B. <de...@br...>]

On Wednesday, 24. April 2002 10:41, Jan Rychter wrote:
<snip>
>     C1:                  promotion[C2] demotion[--] latency[000]
> usage[00000010] C2:                  promotion[C3] demotion[C1]
> latency[001] usage[04386632] *C3:                  promotion[--]
> demotion[C2] latency[100] usage[02206059]
>
> Is that normal? No amount of CPU activity can cause it to go into C1.

Unless you use one of my lowlatency patches, this activity is normal - the 
system switches from C2 only to C1 when the time spent in C2 is _lower_ than 
the interrupt "wakeup" latency. Similar, C3 only switches to C2 on bus 
mastering activity.

Please note that the current C-State is only based on busmastering activity 
and some sort of interrupt activity, and not on general CPU usage.

Dominik