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使用间接流量时 CPU 增加或集群延迟较高

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ontap-9
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perf
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适用场景

ONTAP 9

问题描述

  • 使用间接流量时观察到 CPU 提升
    • 示例: 运行 sysstat -M 命令会显示 CPU 占用率较高 Nwk_Exmpt网络免除 CPU 域
    • 注意: 为便于阅读,本文中的输出缺少列
 Cluster::> set advanced Warning: These advanced commands are potentially dangerous; use them only when directed to do so by NetApp personnel. Do you want to continue? {y|n}: y Cluster::*> node run -node <node> sysstat -M 1 AVG Nwk_Exmpt 61% 994% 60% 988% 60% 974% 61% 971% 
  • 集群网络中也可能出现高延迟
 cluster1::> qos statistics volume latency show -iterations 100 Workload ID Latency Network Cluster Data Disk QoS NVRAM Cloud --------------- ------ -------- -------- -------- -------- -------- -------- ---------- ---------- -total- 110.35ms 0ms 110.02ms 327.00us 0ms 0ms 0ms 0ms vs1vol0 111 167.82ms 0ms 167.22ms 603.00us 0ms 0ms 0ms 0ms vol1 1234 117.76ms 0ms 117.56ms 191.00us 0ms 0ms 0ms 0ms

 

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