Exactamundo! Cache/memory/disk locality dominates almost all other factors[1] unless you're doing something very special. (Speaking as a non-Google person who

Exactamundo! Cache/memory/disk locality dominates almost all other factors[1] unless you're doing something very special. (Speaking as a non-Google person who also likes to think that he knows what he's talking about.) [1] Well, it's really the amazing amount of throughput that modern architectures can achieve. Latency hasn't improved quite as much given the inescapable limitation of the speed of light.