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AFF系统上的LUN读取延迟较高、并在网络中发生了超时

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适用场景

  • ONTAP 9.3 及更高版本
  • AFF 系统
  • 为任何 SAN 协议提供服务的环境 ( iSCSI/FCP / FCoE/NVMEoF )

问题描述

  • 可能会发现特定 LUN/ 卷的平均延迟较高
    • 用户 / 应用程序将报告读取延迟较短。
    • 主机日志中可能会出现潜在中止和超时。
    • 但是,写入延迟不应受到影响
  • AIQUM 或 QoS 的延迟细分显示了延迟中心:网络的所有延迟。
cluster::> qos statistics volume latency show Workload ID Latency Network Cluster Data Disk QoS NVRAM Cloud --------------- ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- -total- - 8.88ms 4.82ms 1.00us 1032.00us 4.02ms 0ms 2.00us 0ms vm_lun_home1-.. 4169 137.73ms 112.91ms 1.00us 22.93ms 1.89ms 0ms 0ms 0ms

 

 

 

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