Re: 2.6.15-ck1

[Dave Jones]

On Wed, Jan 04, 2006 at 12:00:00PM +1100, Con Kolivas wrote:
 >  +2.6.15-dynticks-060101.patch
 >  +dynticks-disable_smp_config.patch
 > Latest version of the dynticks patch. This is proving stable and effective on 
 > virtually all uniprocessor machines and will benefit systems that desire 
 > power savings. SMP kernels (even on UP machines) still misbehave so this 
 > config option is not available by default for this stable kernel.

I've been curious for some time if this would actually show any measurable
power savings. So I hooked up my laptop to a gizmo[1] that shows how much
power is being sucked.

both before, and after, it shows my laptop when idle is pulling 21W.
So either the savings here are <1W (My device can't measure more accurately
than a single watt), or this isn't actually buying us anything at all, or
something needs tuning.

		Dave

[1] http://www.thinkgeek.com/gadgets/electronic/7657/

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