WhenO’ReillyfirstapproachedmeaboutwritingabookonJavaperformancetuning,Iwasunsure.Javaperformance,Ithought—aren’twedonewiththat?Yes,IstillworkonperformanceofJava(andother)applicationsonadailybasis,butIliketothinkthatIspendmostofmytimedealingwithalgorithmicinefficiencesandexterna