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并发性如何影响 ONTAP 9 的吞吐量性能

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适用场景

ONTAP 9

问题描述

  • 当主机读取或写入速度较慢时、  λ 可以应用Little’s Law:N (并发)=(操作)* W (等待时间、以秒为单位)来确定 卷的并发性。
  • 这种方法非常有用、因为它可以通过数学方法快速测量ONTAP是否获得了足够的工作负载、或者网络或主机是否存在延迟。

注意: W表示等待时间较短、但ONTAP使用的是平均响应时间、这与客户端等待时间略有不同。这一概念在实践中是相同的。

 

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