well, the clients are all displaying these round trips now.. but they color stuff wrong, 400+ is red. whereas i consider 400ms round trip to be responsive from time connection initiated, to receiving a small req result. 400ms/4 == 100. a typical 'ping' from west coast us to east coast.
Discussion
"ping" is not the same as delay on delivering a request, and then you have to consider the actual size of the request, specifically the number of individual database queries that thing is gonna trigger, and that also depends a lot on the actual database engine, it might be one thing for one, and another thing for another, and not only that, each relay has a different data set so it's really comparing apples and oranges
Productivity soars when a computer and its users interact at a pace (<400ms) that ensures that neither has to wait on the other.