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NFS mounted volume latency is causing slowness with print services

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Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

  • ONTAP 9
  • NFS
  • VMWARE

Issue

  • Print services slowness and high i/o wait times, performance issues or higher latency are observed
  • run qos statistics volume latency show to display the average latencies for volumes 
    • Cluster::> qos statistics volume latency show -volume Example_Vol -vserver VS1
Workload            ID    Latency    Network    Cluster       Data       Disk    QoS Max    QoS Min      NVRAM      Cloud  FlexCache    SM Sync         VA
--------------- ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------
-total-              -     2.21ms   101.00us    75.00us   400.00us     1.62ms       0ms        0ms     7.00us        0ms        0ms        0ms        0ms
Example_Vol..     3195  1295.00us   478.00us        0ms   777.00us    26.00us       0ms        0ms    14.00us        0ms        0ms
  • Capture packet trace between ONTAP and VMware host shows packet loss retransmission

 

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