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High write latency on MetroCluster IP with Nexus

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Category:
ontap-9
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perf
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Applies to

  • MetroCluster IP
  • ONTAP 9
  • Nexus9000 C9336C-FX2

Issue

  • Latency ranging from 1-1.5 seconds for MetroCluster IP writes
  • Multiple errors count(Align-Err, FCS-Err, Xmit-Err, Rcv-Err) reported from one of the switch port resulting in performance issue:
cluster01-cs01# show interface counters errors


--------------------------------------------------------------------------------
Port          Align-Err    FCS-Err   Xmit-Err    Rcv-Err  UnderSize OutDiscards
--------------------------------------------------------------------------------
Eth1/9                0          0   10010079          0          0           3
Eth1/10               0          0    8470259          0          0           0
Eth1/13               0          0          0          0          0         870
  • From storage end, below command is used to check for the status and configuration of network interfaces on the monitored switches:

system switch ethernet interface show

 

 

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