Checking active user sessions

I wanted to check how many users were really active at that moment - in other words - "How to find active user sessions ? "


I as an Administrator logged in to OBIEE front end. 
I asked 2 more users to log in to the same.


Now in my system - I opened a new page with this type of  URL - 


http://<MyHostName>:9704/analytics/saw.dll?Perfmon


Off course I was expecting 3 active sessions : 


I found this counter - Active Sessions -->

Thanks