A comparative study of CPU power consumption models for cloud simulation frameworks

In this paper a comparative study of CPU power models that have been widely used in cloud simulation environments is conducted. Generic CPU power models for the estimation of the energy consumption of CPU servers have been proposed in cloud simulation frameworks, since estimations of the energy consumption of cloud computing infrastructures can be obtained through simulation experimentation. The main characteristic of these models is that they have low computational complexity and can be applied to a wide range of modern CPU servers. A recently proposed CPU power consumption model, based on a third degree polynomial, is examined and evaluated. A comparative study based on available CPU power measurements of CPU servers, obtained from SPEC benchmark, is conducted. Additionally, experimentation on three CPU servers is performed and power measurements are obtained for various workloads in order evaluate the estimations of the different CPU power models.