Well, aligning for words or cache lines is good. Aligning for pages not so much. Of course this has been known for ages, but sometimes it is hard to avoid, e.g.

Well, aligning for words or cache lines is good. Aligning for pages not so much. Of course this has been known for ages, but sometimes it is hard to avoid, e.g. inside the Linux Kernel: http://yarchive.net/comp/cache_thrashing.html http://yarchive.net/comp/cache_thrashing.html