Energy-Efficient Server Selection Algorithms for Network Applications

In information system, it is critical to reduce the total electrical power consumption. We have discussed a power consumption model for communication-based applications. Then, we have proposed a pair of PCB (power consumption-based) and TRB (transmission rate-based) algorithms to select a server so that the total power consumption of the servers is reduced. In addition, we showed the PCB algorithm is more useful for reducing the total power consumption in the communication-based applications. However, in the PCB algorithm, only the power consumption where a server transmits a file to a client at time T when the server starts transmitting the file is considered. The server might be transmitting files to other clients at time T. Therefore, the power consumption where the server transmits files to other clients has to be considered for enhancing the estimation of the power consumption. In this paper, we propose an extended power consumption-based (EPCB) algorithm by improving the PCB algorithm. In the evaluation, we show the total power consumption can be reduced by the EPCB algorithm compared with the PCB and TRB algorithms.