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High CPU utilization due to user workload

Views:
38
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
perf
Last Updated:

Applies to

  •  All FAS & AFF systems

Issue

  • Introduction of new/additional workloads  can cause the associated Node's CPU utilization to go high.
  • This may or may not be followed by latency.
  • The CPU would be seem to be running low on headroom
  • Any further addition of workload can cause severe disruption to storage.
  • Running sysstat -M shows high WAFL_EX utilization compared to other domains.
  • Depending upon the protocol  domains like Nwk_Exmpt (NAS) or SSAN_Ex(SAN) would also show up high.

 

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