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.
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