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High port utilization leading to performance degradation

  1. Last updated
    May 22, 2024
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Category:
ontap-9
Specialty:
perf
Last Updated:
5/22/2024, 9:39:58 AM

Applies to

  • ONTAP 9
  • AFF system

Issue

  • Found highly utilized port from NIC view in performance archive 

High port utilization leading to performance degradation

  • From sysconfig -a, port e11b on slot 11 and has a max bandwidth of 10Gb/s or approx. 1.1GB/s

High port utilization leading to performance degradation

  • Divide transfer rate on saturated port e11b (342GiB) by 300 to get rate per second (PA data is collected in 5-minute intervals)

E.G - 342000 / 300 = 1140

  • Confirmed port was fully saturated

 

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