I have a couple of thoughts about this:
- the alert works equally well for VMWare systems, so you could tune the ESX alert to have a shorter window than the guest alert.
- I have to believe there's a way to alert for guests that are consuming too many host resources. It's not a canned alert, but I'm going to look into this now now that there's a fly in my ointment.
- ...and of course, SolarWinds would tell you to take a look at Virtualization Manager