Themaintechnicalcontributionsofthispaperare(1)areviewofVMwareWorkstation’ssoftwareVMM,focusingonperformancepropertiesofthevirtualinstructionexecutionengine;(2)areviewoftheemerginghardwaresupport,identifyingperformancetrade-offs;(3)aquantitativeperformancecomparisonofasoftwareandahardwar