On Wed, Aug 22, 2012 at 11:10:13AM +0200, Ingo Molnar wrote: > > * Matthew Garrett <mj...@srcf.ucam.org> wrote: > > > [...] > > > > Our power consumption is worse than under other operating > > systems is almost entirely because only one of our three GPU > > drivers implements any kind of useful power management. [...] > > ... and because our CPU frequency and C state selection logic is > doing pretty much the worst possible decisions (on x86 at > least).
You have figures showing that our C state residence is worse than, say, Windows? Because my own testing says that we're way better at that. Could we be better? Sure. Is it why we're worse? No. > Regardless, you cannot possibly seriously suggest that because > there's even greater suckage elsewhere for some workloads we > should not even bother with improving the situation here. I'm enthusiastic about improving the scheduler's behaviour. I'm unenthusiastic about putting in automatic hacks related to AC state. -- Matthew Garrett | mj...@srcf.ucam.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
