[ltp] X60s and other CoreDuos / Battery LIfe - Kernel/CPU freq scaling iss

[Ari El]

that was smart :)

yes you are right; i tested it putting a constant load on the processor and
changing the mode. for a load next to 22% (in performance), powersave gives
2W savings and 27% load. So... unfortunately :) the processor speed
estimations are not right :(

While we wait for undervolting to arrive, I guess the only thing left to try
is a newer kernel... have you heard of any thinkpad-specific howto for
kernel compilation? I think I'd need the list of required patches for my
x60s & edgy install to boot properly 2.6.18 or 2.6.19....

Thanks!






Kevin O wrote:
> 
> Ari,
> Were your tests done with the computer mostly idle? It is possible
> that there is no noticable power consumption difference between the
> processor at 1 GHz and 1.66 GHz because the processor is going into a
> sleep state most of the time.
> 
> On my x60s (L2400),  bunzipping a  50 MB file takes  26.6 seconds
> using the performance governor and 41.6 seconds using powersave.  When
> using the performance governor power consumption is about 4 W higher
> while zipping.
> 
> Thanks for all your efforts to improve the x60s battery life,
> Kevin
> -- 
> The linux-thinkpad mailing list home page is at:
> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
> 
> 

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