Memory counters at the VM level
vCenter 6.0 Update 1 provides 28 counters for RAM in order to track the various features of VM memory management. Compared to physical servers, where you normally just monitor the memory utilization and swapping, these are a lot counters. All the counters are shown in the next screenshot. With 28 counters per VM, a vSphere environment with 1,000 VMs will have 28,000 counters just for VM RAM!
It is certainly too many to be monitored as part of overall management. The latter part of this chapter will share the three key counters you need to track to manage performance and capacity.
VM – RAM counters
At the ESXi level, vCenter provides 33 counters. As you can expect, some of the counters at the ESXi level are essentially the sum of associated counters of all VMs running in the host, plus vmkernel's own memory counters (since it also consumes memory). This aggregation is useful as VMs do move around within the cluster. Since there are a lot of counters...
