VMware 4817V62 Administration Guide - Page 330

vSphere Basic System Administration Table C-2. CPU Data Counters (Continued) Counter Label Description usage CPU Usage CPU usage as a percentage during the interval. VM Amount of actively used virtual CPU, as a percentage of total available CPU. This is the host's view of the CPU usage, not the guest operating system view. It is the average CPU utilization over all available virtual CPUs in the virtual machine. For example, if a virtual machine with one virtual CPU is running on a host that has four physical CPUs and the CPU usage is 100%, the virtual machine is using one physical CPU completely. virtual CPU usage = usagemhz ÷ (# of virtual CPUs × core frequency) Host Actively used CPU of the host, as a percentage of the total available CPU. Active CPU is approximately equal to the ratio of the used CPU to the available CPU. available CPU = # of physical CPUs × clock rate 100% represents all CPUs on the host. For example, if a four-CPU host is running a virtual machine with two CPUs, and the usage is 50%, the host is using two CPUs completely. Cluster Sum of actively used CPU of all virtual machines in the cluster, as a percentage of the total available CPU. CPU Usage = CPU usagemhz ÷ effectivecpu n Stats Type: rate n Unit: percent n Rollup Type: average (min/max) n Collection Level: 1(4) n VC/ESX: Yes/Yes VHRC 330 VMware, Inc.