On Wed, Nov 17, 2010 at 11:16 AM, Johannes Berg <johannes@xxxxxxxxxxxxxxxx> wrote: > On Wed, 2010-11-17 at 17:28 +0900, Bruno Randolf wrote: >> I understand that this could be more efficient, but if it matters or not - >> honestly, I don't know. Can a more knowledgeable person than me comment on >> this? > > Yes, it does matter -- think of an embedded MIPS board running at 500MHz > and trying to push 11n speeds. I assume the number of samples (weight) is the more important tunable. One option is you can require factor to be a power of two that is much larger than weight, then at least you can store factor/weight precomputed and multiply by it instead of doing a divide in ewma_add. Then ewma_get can also just be a shift as well. -- Bob Copeland %% www.bobcopeland.com -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
