Understanding the Profiler

In these screenshots, I'm running the profiler on the server. the humps are when the server receives a custom MessageBase from a client with 4 ints. Can anyone illuminate what all these numbers in the profiler mean? or point me to detailed info about it?

 

thanks for the info!
....but I have a few more questions -

1. i feel like one of the primary things i care about when making a multiplayer game is not just number of packets, but size of data being transferred. is there a place i can see this?
2. in my Network Operations screenshot, what does "IN:47:Int16" mean?
3. What about everything on the Network Messages screenshot? What does that stuff mean?
4. specifically - what does RTT mean? why not use the full term in the profiler and not a mysterious acronym

 

I believe with #4 you're looking at the round trip time/return trip time.

 

So how do we get to know how much data is actually being sent?

I think there should be a comprehensive dedicated chapter in the docs focusing on profiling and optimizing network bandwidth consumption.

 

Is there any update on the documentation? It would be great to have more info (the packet size in particular).
Also I am not clear on why receiving a ClientRPC (for example) is spread over so many frames as in the screenshot below.