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Energy consumption imposes a significant cost for data centers; yet much of that energy is used to maintain excess service capacity during periods of predictably low load. Resultantly, there has recently been interest in developing designs that allow the service capacity to be dynamically resized to match the current workload. However, there is still much debate about the value of such approaches in real settings. In this paper, we show that the value of dynamic resizing is highly dependent ondoi:10.1145/2254756.2254815 dblp:conf/sigmetrics/WangLCWL12 fatcat:h2n3n6xtpff3labfsplktvkqsu