Performance Isolation Framework for Virtualized Server Applications

Recently, most IT organizations aretransforming their data centers to smallervirtualized ones with the help of servervirtualization. In virtualized servers, multipleapplications are consolidated into a physicalserver by sharing and multiplexing their physicalresources. For such environment, performanceisolation among consolidated applications is thedesirable thing to meet Service Level Agreements(SLAs) of those applications. This paperdescribes the way to control the total amount ofCPU resource consumption in privileged anddriver domains of each virtual machine (VM). Bylimiting the CPU resource usage of each VM inboth domains, performance isolation among cohosted application can be achieved. Toaccomplish this purpose, state spacerepresentation of Multi-Input Multi-Output(MIMO) controller is designed. The proposedframework is implemented and tested on atestbed which used Xen virtualizationenvironment as an ongoing wor