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Achieving Energy Proportionality In Server Clusters

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Author(s): Xinying Zheng | Yu Cai

Journal: International Journal of Computer Networks
ISSN 1985-4129

Volume: 1;
Issue: 1;
Start page: 21;
Date: 2009;
Original page

Keywords: Green computing | energy proportional | server cluster

ABSTRACT
a great amount of interests in the past few years. Energy proportionality is a principal to ensure that energy consumption is proportional to the system workload. Energy proportional design can effectively improve energy efficiency of computing systems. In this paper, an energy proportional model is proposed based on queuing theory and service differentiation in server clusters, which can provide controllable and predictable quantitative control over power consumption with theoretically guaranteed service performance. Futher study for the transition overhead is carried out corresponding strategy is proposed to compensate the performance degradation caused by transition overhead. The model is evaluated via extensive simulations and is justified by the real workload data trace. The results show that our model can achieve satisfied service performance while still preserving energy efficiency in the system.
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