Please check the below,it will help you out.
- TabMon v1.2 - improved for you in time for TC 2017!
- Re: tableau server live connection performance
- Re: What is the right way to download a tabmon sample workbook?
- Configuring TabMon
- Introducing TabMon, a Cluster Monitor for Tableau Server
you can contact tableau support if in case you are not getting any solution online.
hope it helps.
I've already checked all the documentation:(
Still I've confused off configuration of Tableau Server connection.
If you are confused in spite of the available documentation and online help.
I suggest please contact tableau support.