Asignificantbodyofpriorworkhasdevisedapproachesforautomatingthefunctionaltestingofinteractiveapplications.However,littleworkexistsforautomaticallytestingtheirperformance.PerformancetestingimposesadditionalrequirementsuponGUItestautomationtools:thetoolshavetobeabletoreplaycomplexinteractiv