When I worked at Facebook we would measure performance gains (or losses) in terms of metric tons of computers saved (or lost). http://carlos.bueno.org/optimiza

When I worked at Facebook we would measure performance gains (or losses) in terms of metric tons of computers saved (or lost). http://carlos.bueno.org/optimization http://carlos.bueno.org/optimization There was also a rule about always showing your work. ;) The details of the actual optimization are less important than the means by which one measured where the CPU time was going, and how the expected result was confirmed.