Applies to ONTAP 9 All AFF systems with NVMe drives in NVMe over Fabrics (NVMe-oF) configuration All AFF systems with NVMe drives in NVMe over TCP (NVMe/TCP) configuration Issue CPU may idle around 10...Applies to ONTAP 9 All AFF systems with NVMe drives in NVMe over Fabrics (NVMe-oF) configuration All AFF systems with NVMe drives in NVMe over TCP (NVMe/TCP) configuration Issue CPU may idle around 10% or 20% when clients are connected but there are 0 client IOPs Example: sysstat -m at node shell from A400 shows cores 0-14 at 0%, but 15-19 at 40% (some rows removed for readability): Cluster::> node run -node <node> sysstat -m 1 CPU15 CPU16 CPU17 CPU18 CPU19 44% 38% 39% 41% 38%
