Several possibilities.
  • Use MPLAB's MPSIM simulator, and use the built in "Stopwatch" to measure the time.<br><br>
  • Toggle an output pin on each loop and use an oscilloscope to measure the time.<br><br>
  • or, try this program...<br>
    Instruction Execution Time
    http://www.picbasic.co.uk/forum/showthread.php?t=365