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Message-ID: <468E6F4C.8000601@linux.intel.com> Date: Fri, 06 Jul 2007 09:35:24 -0700 From: Arjan van de Ven <arjan@...ux.intel.com> To: Chuck Ebbert <cebbert@...hat.com> CC: linux-kernel@...r.kernel.org Subject: Re: 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) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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