Calculating the Power Usage Effectiveness of Data Centers by Using Weighted Average Workload

The traditional approaches of calculating PUE (Power Usage Effectiveness) in data centers ignore the impacts of the time factor. The methods cannot accurately reflect the long-term operation efficiency of data centers. This paper investigates the impact of workload on the PUE, and proposes to compute the PUE by leveraging weighted average workload. Theoretical analysis and experimental evaluation demonstrate that workload normally has a significant impact on the average PUE. The proposed approach can achieve a more accurate PUE in contrast to the traditional methods.