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High performance impact after node reboot or ONTAP upgrade on A300/FAS8200

  1. Last updated
    Jun 24, 2024
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861
Visibility:
Public
Votes:
2
Category:
ontap-9
Specialty:
perf
Last Updated:
6/24/2024, 12:20:44 PM

Applies to

  • ONTAP 9
  • AFF A300 / FAS8200 

Issue

  • Extremely high performance degradation after ONTAP upgrade and/or reboot
  • The performance degradation can be noticed as: 
    • High CPU utilization, most of it is coming from wafl_exempt CPU domain
    • All the latency is coming from CPU Data Blade
    • High latency on the volumes even with minimal Ops
    • Long Consistency Points (CP)
    • From waffinity view high run time on CPU for all messages
    • Unexplainable high run time for several processes
    • Node boots up slowly (20-30 minutes)

 

 

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