进入成功Scalability的区域
Getting in the Zone for Successful Scalability
摘要：
通用可伸缩性定律（USL）是一种用于量化应用程序扩展的分析模型。它是普遍的，因为它包含Amdahl定律和Gustafson线性标度作为特殊情况。使用模拟，我们显示：（i）USL等同于负载相关机器修理工模型中的同步化，以及（ii）USL、Amdahl定律和Gustafson缩放如何被视为定义三个可扩展性区域的边界。典型的吞吐量测量跨越所有三个区域。模拟场景可以更深入地了解嵌入效应，从而更清楚地指示应调整哪些应用程序功能以进入最佳性能区。
英文摘要：
The universal scalability law (USL) is an analytic model used to quantify application scaling. It is universal because it subsumes Amdahl's law and Gustafson linearized scaling as special cases. Using simulation, we show: (i) that the USL is equivalent to synchronous queueing in a load-dependent machine repairman model and (ii) how USL, Amdahl's law, and Gustafson scaling can be regarded as boundaries defining three scalability zones. Typical throughput measurements lie across all three zones. Simulation scenarios provide deeper insight into queueing effects and thus provide a clearer indication of which application features should be tuned to get into the optimal performance zone.
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