In this paper we focus on the problem of making short and medium term forecasts of CPU availability on time-shared Unix systems. We evaluate the accuracy with which availability can be measured using Unix load average, the Unix utility vmstat, and the Network Weather Service CPU sensor that uses both. We also examine the autocorrelation between successive CPU measurements to determine their degree of self-similarity. While our observations show a long-range autocorrelation dependence, we demonstrate how this dependence manifests itself in the short and medium term predictability of the CPU resources in our study.
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机译：在本文中，我们关注于在共享时分的Unix系统上对CPU可用性进行短期和中期预测的问题。我们使用Unix负载平均，Unix实用程序vmstat和使用这两者的Network Weather Service CPU传感器来评估可用性的准确性。我们还检查了连续CPU测量之间的自相关，以确定它们的自相似程度。尽管我们的观察结果显示了长期的自相关依赖性，但在我们的研究中，我们证明了这种依赖性如何在CPU资源的短期和中期可预测性中体现出来。
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