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Troubleshooting CIFS Latency - Single volume readdir workloads with high latency

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Category:
ontap-9
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perf
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Applies to

  • ONTAP 9
  • Data ONTAP operating in 7-Mode
  • Slow CIFS Home Directories
  • Slow VDI (Hyper-V) or Citrix Home Profiles using folder redirection.

Issue

Workload            ID    Latency    Network    Cluster       Data       Disk        QoS      NVRAM
--------------- ------ ---------- ---------- ---------- ----------  ---------  ---------  ---------
-total-              -   136.49ms    99.00us    70.00us   136.17ms   153.00us        0ms        0ms
vserver1_vol1..   4201   206.05ms   130.00us        0ms   205.88ms    44.00us        0ms        0ms
vserver5_vol8..   7704  1309.00us   351.00us     1.00us   834.00us   114.00us        0ms     9.00us
-total-              -   140.29ms   103.00us    75.00us   139.94ms   174.00us        0ms        0ms
vserver1_vol1..   4201   379.03ms   127.00us        0ms   378.73ms   175.00us        0ms        0ms
vserver5_vol8..   7704     2.02ms   309.00us     1.30us  1820.00us   105.00us        0ms     9.00us

 

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