On 01/31/2013 03:40 PM, Namhyung Kim wrote: > On Thu, 31 Jan 2013 15:30:02 +0800, Michael Wang wrote: >> On 01/31/2013 02:58 PM, Namhyung Kim wrote: >>> But AFAIK the number of states in cpuidle is usually less than 10 so maybe >>> we can change the weight then, but there's no promise... >> >> And I just got another case we should take care: >> >> group 0 cpu 0 cpu 1 >> power index 8 power index 8 >> >> >> group 1 cpu 2 cpu 3 >> power index 0 load 15 >> >> so load of group 0 is 16 and group 1 is 15, but group 0 is better... > > Maybe it's not. The cpus in group 0 are in a lower power state so that > there will be a benefit to select cpu 2 from the power' PoV IMHO. Also > such a low power state has a longer exit latency so that we should > choose cpu2 to get a better performance and it's the basic idea of this > patchset I believe.
Well, this case is just to notify that, we may face the comparison between load and index, not between index and index, I just doubt there won't be a rule which could take care both, besides, comparison between load and index is strange... Regards, Michael Wang > > Thanks, > Namhyung > -- > 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/ > -- 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/