Hi!
I am flipping through the screenshots you've shared and am not sure I am seeing the entire picture.
I see that both systems are vastly idle (cpu wise). Even then, the 2.7 (presumably) Screenshot 2 seems really low in usage.
Would you be interested in comparing (let's say) a session with 10 users on each of the servers, with screenshot of `top` or `htop` so we see the CPU load per process and the 5 min average system load?
Other than that, system load varies wildly depending on what happens in the sessions. But what I have observed when testing 3.0 under load is that the client is way more responsive in sessions of large numbers of users (200+) and that in general I see better support for large sessions on BBB 3.0 than 2.7.
The architecture and frameworks have changed quite a bit between 2.7 and 3.0 so I am not sure that comparing the two systems at 0 or 1 users "load" will give conclusive result.
Anton