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Perfstat 中的 Max/Min/Ave Column 是什么意思?

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适用于

  • SANtricity 操作系统
  • SMcli savestorageArrayperformanceStats 命令

回答

以下是 savestorageArrayperformanceStats 输出的每个指标的计算方法:

  • Total IOs:
    自命令开始以来的累计 I/O 操作总数。对于 10 秒的 MonitorInterval,这是所有间隔的总和。

  • 最大/最小/平均字段(例如,MaximumMBs/sec、MinimumIOs/sec、AverageIOLatency):

    • 最大值:在所有间隔内观察到的指标的最大值。
    • 最小值:在所有间隔内观察到的指标的最小值。
    • 平均值:所有间隔中指标值的算术平均值(例如,对于 5 次迭代,为 5 个值的平均值)。
  • 当前字段(例如,CurrentMBs/sec、CurrentIOs/sec、CurrentIOLatency):
    在最近间隔期间观察到的值(即,过去 MonitorInterval 的平均值)。

  • Read%、PrimaryReadCacheHit%、PrimaryWriteCacheHit%、SSDCacheHit%:
    百分比值按所有间隔的平均值计算。

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