Low latency and High CPU or DISK utilization due to deduplication
Applies to
- ONTAP 9
- Active IQ Unified Manager
Issue
- High CPU or DISK utilization is seen, possibly despite low IOPs
- This occurs when a deduplication job is running a scheduled volume efficiency scan
- Node Performance Limit - System Node Utilization messages being received via Active IQ Unified Manager (AIQUM)
- Consistently seeing very high resource consumption on single node