The vmware app is great. However it does not collect all the data that is available. I ended up using the vmWare app for the big picture, but wrote my own app to collect more detailed info. In my case I'm pulling io_read/write from vCenter using pyvmomi.
The app does collect lots of performance stats, they are not enabled by default. Found what I Needed in the docs, the config docs.
http://docs.splunk.com/Documentation/VMW/latest/Configuration/Managethresholdsettings
Thanks, but this by itself. Expensively. Whether there are options to make most?