High CPU utilization in HOST domain
Applies to
- ONTAP 8.2 or newer
Issue
- High CPU on one node.
- Running sysstat -M shows high host domain utilization compared to other domains:
ANY1+ ANY2+ ANY3+ ANY4+ ANY5+ ANY6+ ANY7+ ANY8+ AVG CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7 Nwk_Excl Nwk_Lg Nwk_Exmpt Protocol Cluster Storage Raid Raid_Ex Target Kahuna WAFL_Ex(Kahu) WAFL_XClean SM_Exempt Cifs Exempt SSAN_Ex Intr Host Ops/s CP
100% 100% 98% 97% 93% 87% 76% 63% 89% 89% 91% 91% 91% 90% 88% 86% 87% 4% 7% 45% 0% 0% 6% 2% 6% 5% 42% 52%( 35%) 0% 0% 0% 9% 9% 6% 520% 6571 0%
Note: This is not related to slowness as CPU usage is always a symptom, but without a problem is not good or bad, it just is there. If unsure, Please contact NetApp Technical Support and reference this article for further assistance.