Full perf support working in lttngtop : ability to select which counter to display, and sort the list based on a specific counter, at each period (by default 1 second) the counter is reset to 0, so the view gives the user the summary of what happened in the last period. Like in the cputop view, this view allows the user to pause the refresh and go back in time.

Next step : change the  backend to allow recalculation of each counters based on the trace and not on precalculated counters to give more flexibility, which means a big cleanup in babeltrace lib.