[ltp] Time spent in C3 cpu state ?

[Josh Battles]

Jeffrey L. Taylor said:
> Quoting Josh Battles <josh.lists@omg-stfu.com>:
>> Brad Langhorst said:
>> > On Tue, 2005-08-09 at 10:02 -0500, Josh Battles wrote:
>> >> Damien Challet said:
>> >> > Hi,
>> >> >
>> >> > Just wondering, what is the fraction of the time your thinkpad spends
>> in
>> >> C3
>> >> > cpu state ?
>> >> >
>> >> > My own stats:
>> >> >
>> >> > T41 2373-GEG: 50%, x21 and 600E with PIII@450MHz: 85%
>> >> >
>> >> > Is there any way to improve the usage of C3 ?
>> >>
>> >> Please excuse my ignorance, but isn't C3 a low-power idle state?
>> Wouldn't
>> >> it
>> >> only be in this state if you have it suspended or something?
>> >
>> > you're getting confused between  S3 and C3.
>> >
>> > brad
>>
>> Are they not both ACPI suspend to ram states?
>>
>
> C3 is a low power, active state.  My laptop spends most of its powered
> up time in the C3 state.  Look in /proc/acpi/processor/CPU
>
> HTH,
>   Jeffrey

Thanks.

-- 
- Josh
www.omg-stfu.com