High CPU utilization due to user workload
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.