Resources:
http://www.yellow-bricks.com/esxtop/
https://communities.vmware.com/docs/DOC-9279
When first started the default view will show CPU stats – i.e.:
There are several display modes – to list them all press h
Switch display: c:cpu i:interrupt m:memory n:network d:disk adapter u:disk device v:disk VM p:power mgmt x:vsan