Abstract
How to meet the QoS of the applications and improve resource utilization is a great challenge in virtualized environment. This paper proposes a resource allocation policy based on resource utilization in virtualized environment. In order to meet the goal of QoS, we build a mapping table reflecting the mapping relation between resource and service performance through web server benchmarking experiments firstly, then we detect current request rate in the workload and search the maximum resource utilization of the virtual machine which could meet the QoS goal from the mapping table, and finally take advantage of the control model designed in this paper to maintain the utilization of the virtual machine's allocated resource near the maximum. Our experimental results showed that the resource allocation policy could meet the QoS goal for the virtual machine and improve the resource utilization of physical resource in the virtualized system.
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