On Sat, 19 Jun 2010 11:00:31 +0200 Andi Kleen <andi@xxxxxxxxxxxxxx> wrote: > > IIUC, it's not to help or optimize polling itself. It just gives > > us a way to estimate when the next interrupt would be so that power > > can be optimized for non polling cases. > > Shouldn't the idle governour estimate this already? we have a set of heuristics in the idle governor to try to predict the future. For patterns that are regular in some shape of form we can do this. Here we have the opportunity to get real good information.. we KNOW now an interrupt is coming, and we can even estimate how long it'll be... Even for the first few after a long time, before a pattern emerges. -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
