Talks from Mike Acton and Scott Meyers, specifically "Data-Driven Development" and "CPU Caches and why you should care" respectively. I forgot exactly where I

Talks from Mike Acton and Scott Meyers, specifically "Data-Driven Development" and "CPU Caches and why you should care" respectively. I forgot exactly where I got that number, but it's been a pretty good metric so far. In a nutshell; the compiler is great a micro-optimizations and absolutely terrible at macro-optimizations. The former will get you a few percent of perf boosts while the later usually results in orders of magnitudes of performance gains. Its near impossible to apply macro-optimizations at the end of a project without massive refactors.