Yes, that's correct.
Where I currently have a doubt is, that I have no process, that is running a long time yet, but having a peak at the moment so that I can see that the values
tprof shows are relevant for the interval and not again just some kind of average etc.
When I have a infinite loop running, it will be at a certain level for all of it's life span. So I can't tell if the output is because of the actual CPU usage in the interval or just the average, since it was always at this level.
I checked boxes in my environment, that have some amount of traffic, but sadly the involved processes have a very jumpy behaviour about CPU usage and are so with not suitable for my test to proof the output of
tprof.
If you have such processes, that are running for some hours or days etc. already, you could check that for me, if you like