lPerformance problems
occur in a small portion of code
l4% of application code accounts for more than 50% of the execution time. -
Donald Knuth
l20% of application code accounts for 80% of the execution time - Barry Boehm
lDevelopers, using
guesswork, are notoriously bad at deciding what code to optimize
lMeasuring performance
statistics helps developers find that 4% of code to optimize
l