I am particularly interested in "Cluster" column. It looks most of numbers under "cluster" colum are all very small , < 1ms, but, once a while righe after "total" rows, there would be a big jump 231.29ms for instance.
Based on my checking, Cluster = time spent waiting on another node inside the ONTAP cluster.
What is the difference between "total" and the volume row? Why most of them are very small, and then some jumps , how to explain that?