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Cloud Volumes ONTAP 中的高NVRAM延迟—解决指南

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适用场景

  • ONTAP 9
  • Cloud Volumes ONTAP ( CVO )

问题描述

  • 用户工作负载通过任何协议( NAS 或 SAN )响应速度较慢
  • qos statistics volume latency showNVRAM列下方显示了延迟。
::> qos statistics volume latency show Workload ID Latency Network Cluster Data Disk QoS NVRAM Cloud FlexCache SM Sync --------------- ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- -total- - 195.97ms 150.00us 0ms 796.00us 0ms 0ms 1195.03ms 0ms 0ms 0ms data1-wid30897 30897 1.60s 157.00us 0ms 818.00us 0ms 0ms 1.60s 0ms 0ms 0ms -total- - 536.23ms 110.00us 0ms 495.00us 0ms 0ms 535.63ms 0ms 0ms 0ms data1-wid30897 30897 0ms 0ms 0ms 0ms 0ms 0ms 0ms 0ms 0ms 0ms -total- - 7.42s 136.00us 0ms 743.00us 0ms 0ms 7.42s 0ms 0ms 0ms data1-wid30897 30897 1137.67ms 1.65ms 0ms 3.55ms 0ms 0ms 1132.47ms 0ms 0ms 0ms

示例: 在vol1上、写入工作负载增加、导致vNVRAM在同一时间(2020年9月16日凌晨12点之后)出现延迟

《Cloud Volumes ONTAP—解决方案指南》中的高NVRAM延迟

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