I'm looking at both the WMI Monitor and VM Console free tool help, and I can't find the documentation you are referring to. I see that you posted this in the WMI Monitor Free tool forum, but you're asking about VM Monitor. Can you provide a little more information so that I can find the documentation you are referencing?
I have found the documentation you are referencing. I was looking at VM Console instead of VM Monitor. My mistake. I am looking into this and will get back to you...
"Runtime" indicates the amount of physical memory on the system hosting the VMs (ESX host) that is being reserved for a VM's use while its running.