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MetroCluster 环境中的写入延迟和低吞吐量

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Category:
ontap-9
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perf
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适用场景

  • ONTAP 9
  • MetroCluster

问题描述

  • MetroCluster 系统上的写入延迟较高
  • IOPS 数量低于预期 IOPS
  • 在 CLI 中,使用命令检查 qos statistics volume latency show 

示例:

cluster::> qos statistics volume latency show -node node1

Workload       ID    Latency    Network    Cluster       Data       Disk      QoS     NVRAM      Cloud 

------------ ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- -

volume_1     12578   10ms    1ms      0ms     0.5us      1ms    0ms    9ms        0ms  volume_2       5232   2ms     1ms     0ms      0.25us     1ms    0ms     0ms        0ms  volume_3     17160   1ms    1ms        0ms         0.25us     1ms    0ms      0ms        0ms  

上述示例表示volume_1受 NVLog 传输延迟影响

 

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