CPU Timer

If available, free CPU timers can be used to calculate time spent within activities whose performance Related references is required. For example, in OMAP1510/ARM925T architecture, there are three freely usable CPU timers that can count with frequencies up to the CPU main clock frequency, therefore accurately recording temporal activities. The disadvantage in using CPU timers in performance measurements is that in most cases the timers have already been employed by other activities. Through investigation of those activities it is still possible to use the CPU timers in harmony with them, but with certain limitations.