On Fri, 2005-03-18 at 19:13 +0100, Pavel Machek wrote: > > So it is basically "need very simple piece of documentation from > notebook vendor" and some vendors are already wiling to share that > info? Good. Yes. At this point, I can wake up rv350 and rv280 mobilities with some limitations (maybe not all panels, I don't get the DVI output right yet, ...). The "piece of doc" might even be obtained from ATI there since it's possible that this infos is in a standard place in the BIOS image (like other tables already there). > > 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 Yes, it was also on some ppc's which is why I'm wondering if I did something wrong in my experiment :) It may also be different for different CPU models. Ben
