The link is supposed to be <a href="https://speakerdeck.com/alblue/understanding-cpu-microarchitecture-for-performance-jchampionsconf?slide=20" rel="nofollow">https://speakerdeck.com/alblue/understanding-cpu-microarchit...</a> but for some reason HN has stripped the last parameter off, which means it is more pointing to the beginning of the deck instead of slide 20.