On Sun, 20 May 2007, Nick Piggin wrote: > I _am_ considering the average case, and I consider the aligned structure > is likely to win on average :) I just don't have numbers for it yet.
I'd be glad too if you could get some numbers. I did some benchmarking a few weeks ago on x86_64 and I found only a very minimal performance drop if the calculation was simplified. Note also that a smaller structure means that more page structs can be covered by a certain amount of cachelines. Doing the alignment may cause more cacheline misses. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
