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DateFri, 06 Jul 2007 09:35:24 -0700
FromArjan van de Ven <>
SubjectRe: Liunx power consumption on laptops -- Enormous progress in the last few months
Chuck Ebbert wrote:
> On 07/05/2007 03:58 PM, Arjan van de Ven wrote:
>> While it's hard to show "one size fits all" number/percentage, we took a
>> bog standard Lenovo T61 laptop (no vendor preference, they just were the
>> first one to deliver a model with the latest Intel chipset to our cubes)
>> and measured the effect. The baseline we used was a 32 bit Fedora 7
>> installation; note that this already has the tickless kernel, but is
>> lacking several of the key bugfixes that came afterwards.
>>
>> We've put our measurements in a graph at
>>
>> http://ww.linuxpowertop.org/results.php
>>
>> With kernel fixes and features, the power consumption of this laptop
>> went from 21.06 Watts to 18.25 Watts; with 2 additional userspace fixes
>> the power consumption ended up at 15.5 Watts.
>>
> 
> Where is the ondemand-fix.patch? I can't find any link to it.

just click on it in the graph ;_

it's also http://www.linuxpowertop.org/patches/ondemand-fix.patch 
(which is submitted already to the maintainers)
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