Threads.conf information request + Best Practices Guide

Threads.conf information request + Best Practices Guide

Hello All,
We located some legacy documentation in reguards to data tuning, and it provided information about "threads.config" 
\ManageEngine\OpManagerPlus_Probe\conf\OpManager\threads.conf



I see there are many different thread defaults, and Im looking to gain insight on each of the entry.
Some of these are pretty straight forward (statuspoll" and "datapoll" etc. but looking to understand the others (main, MS,config,realtime,save_poll,snmp_poll" etc

What are the maximiums, how can we validate utilization (threaddump, we believe)

For
\ManageEngine\OpManagerPlus_Probe\conf\OpManager\POSTGRESQL\database_params.conf

NON_TRANS_CONNECTIONS & maxsize=1

Whats the limits?
Im assuming its higher than: 


Lastly, Im looking for an admin guideOpmanager (latest version) 


We have thousands of SNMP based devices, and well over 100k interfaces (and growing)


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