OK so your setup seems to have been working pretty well last week..
cccam already show you ECM requests per users from the cccam webif. If you have excessive users, remember that you are not obliged to keep them. Sharing should be a mutually beneficial arrangement. If you find that some of your peers are taking the biscuit, you can explain the situation to them and if you are not happy with their explanation or the excessive usage keeps up, just dump them.
To work out excessive usage you can use your own usage as a bench mark.. In my situation I used a box that was left on from 7am to 11pm & requested about 9,000 ECM's from my card. So for me alarm bells ring when users without reshare request more than 15,000 ECM's or when users with reshare request more than 30,000 ECM's. There are times that I just ignore these alarm bells, for example:
1.. A good peer is having trouble with his/her local
2.. If its a family member
3.. If Its me, lol
Now we are getting down to the strange parts of you posts..
but earlier you said..
Lastly..
As mentioned above, just get rid of peers with excessive usage that you think might be taking advantage..
CSP, can be like a dirty word when used in the wrong context.
When you say that you don't understand cccam/oscam (Probably the most user friendly setup out there) but you want to install CSP. People usually think payserver in the making.
When your very first server is on a VPS, people also usually think payserver in the making.
I am not accusing you of anything (In fact I know there can be genuine reasons for certain parts of your setup), I am just telling you how people will interpret your comments so please take a bit of time to explain your setup & your reasons for wanting to change/upgrade it.
Thanks