The Performance Tuning Codex

"Premature optimization is the root of all evil. But mature optimization is the root of all delight."

The Performance Philosophy

The Golden Rules

RULE 1: MEASURE FIRST
Don't guess where the bottleneck is.
Profile. Measure. Prove.

RULE 2: OPTIMIZE THE RIGHT THING
80% of time is spent in 20% of code.
Find that 20%.