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NetApp Knowledge Base

Connection group load imbalance might cause latency problems for clients

Views:
174
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
perf
Last Updated:

Applies to

  • ONTAP 9.3P2
  • ONTAP 9.3P6
  • ONTAP 9.3P8
  • ONTAP 9.3P14
  • ONTAP 9.3P17
  • ONTAP 9.5P10

Issue

Extreme latency on specific client connection(s) and observations of high latency in qos statistics workload latency show at either the Network (for direct I/O) or Cluster (for indirect I/O)

cluster1::> qos statistics workload latency show

Workload            ID  Latency   Cluster     Network    Data      Disk      QoS      NVRAM      Cloud
--------------- ------ --------   -------- --------   -------- -------- -------- ---------- ----------
-total-                110.35ms   110.02ms      0ms   327.00us      0ms      0ms        0ms        0ms
vs1vol0            111 167.82ms   167.22ms      0ms   603.00us      0ms      0ms        0ms        0ms
vol1              1234 117.76ms   117.56ms      0ms   191.00us      0ms      0ms        0ms        0ms
vol2               999  44.24ms    44.05ms      0ms   190.00us      0ms      0ms        0ms        0ms
-total-             -   38.89ms    38.63ms      0ms   256.00us      0ms      0ms        0ms        0ms
vol2               999  64.47ms    64.20ms      0ms   266.00us      0ms      0ms        0ms        0ms
vol1              1234  27.28ms    27.03ms      0ms   253.00us      0ms      0ms        0ms        0m

 

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