add info for trending

[toaster-code]

I would like to suggest to add some info to the stored durations that allow observing a trending in a process.
For example:
a function test() is called 1000 times, which at the first call it takes 1ms, the second time it takes 10ms, and so on...
I can observe that the total time shall increase but it would be nice to observe a trending when there are multiple functions that would lag a process and there is one that lagging increases faster than others.

Thanks