Script to find overutilized virtual machines

Hello:

Is there a way to find all overutilized virtual machines on the VC via script? for example, I want to find all Vms that are using more than 80% memory and/or CPU 10 minutes in a row or longer.

The same question I have for underutilized virtual machines, but it will be easy once I get the first part working.

Thanks a lot,

qwert