On Fri, 18 Mar 2005 19:13:17 +0100 "Pavel Machek" <pavel@xxxxxx> wrote: > > 21:52:11< pavelm> I was playing with variable scheduling ticks here, > > hoping to save some power. 21:52:31< pavelm> How big power savings > > should I expect? 21:52:48< pavelm> What cpu will benefit most? > > 21:53:04< pavelm> Is there easy way to measure it? > > > > I played with that too on some PPCs and was surprised by the absence > > of benefit, but I might have done something wrong, I need to > > instrument the stuff better. > > Difference between HZ=100 and HZ=1000 was measuerd to be approx. as > big as disk spinnned up vs. spinned down (i.e. watt or so) by > seife.... Not *that* unimportant. But it took month or so to get that > data, because he was basically measuring runtime from full to empty > battery. Have any of these patches been published? I've been playing with variable ticks too, and I would like to see what other people have been doing (as so far, the only thing I've managed to do is commit crimes against nature and the idle loop). Jordan -- Jordan Crouse Senior Linux Engineer AMD - Personal Connectivity Solutions Group <www.amd.com/embeddedprocessors>
