... range of workloads and machines, and we compare the accuracy of thesemodels in each instance. This analysis illuminates the trade-offsbetween simplicity and accuracy, as well as the limitations ... relationship between resourceusage and system-level power consumption. This understandingenables such optimizations as consolidating workloads on asfew machines as possible and turning others off ... 1. The rest of this section examines the results for some of the individual machines, showing where more detailed modelsare most necessary; again, the full results for all machines,including the...