Dynamic task assignment and resource management in cloud　services by using bargaining solution

摘要

Cloud computing provides infrastructure, platform and software as services to customers. For the purpose ofrnproviding reliable and truthful service, a fair and elastic resource allocation strategy is essential from thernstandpoint of service customers. In this paper, we propose a game theoretic mechanism for dynamic cloudrnservice management, including task assignment and resource allocation to provide reliable and truthfulrncloud services. A user utility function is first devised considering the dynamic characteristics of cloudrncomputing. The elementary stepwise system is then applied to efficiently assign tasks to cloud servers. Arnresource allocation mechanism based on bargaining game solution is also adopted for fair resource allocationrnin terms of quality of service of requested tasks. Through numerical experiments, it is shown that thernproposed mechanism guarantees better system performance than several existing methods. The experimentalrnresults show that the mechanism completes the requested tasks earlier with relatively higher utility whilernproviding a significant level of fairness compared with existing ones. The proposed mechanism is expectedrnto support cloud service providers in elastically managing their limited resources in a cloud computingrnenvironment in terms of quality of service.