Towards Energy Efficient Change Management in a Cloud Computing Environment

Achieving an energy-efficiency control and simultaneously satisfying a performance guarantee have become critical issues for cloud providers. The existing work is power saving in Virtual Machine the potential performances overheads of server consolidation were evaluated. In this paper, three power-saving policies are implemented in cloud systems to mitigate server idle power. Three power-saving policies that (a) switching a server alternately between idle and sleep modes, (b) allowing a server repeat sleep periods and (c) letting a server Stays in a sleep mode only once in an operation cycle are all considered for comparison. The main objective is to mitigate or eliminate unnecessary idle power consumption without sacrificing performances. A server is allowed to stay in an idle mode for a short time when there has no job in the system, rather than switch abruptly into a sleep mode right away when the system becomes empty. An idle mode is the only operating mode that connects to a sleep mode. Simulation results show that the benefits of reducing operational costs and improving response times can be verified by applying the power-saving policies combined with the present algorithm as compared to a typical system under a same performance guarantee. Our proposed work is concentrated for the decrease the user response time and cost using the request matching algorithm, neg late the same user request for repeat.