Measure code speed in .net in milliseconds

Question

I want to get the maximum count I have to execute a loop for it to take x milliseconds to finish.

For eg.

int GetIterationsForExecutionTime(int ms)
{
            


        

Answer 1

Good points from Eric Lippert. I'd been benchmarking and unit testing for a while and I'd advise you should discard every first-pass on you code cause JIT compilation. So in a benchmarking code which use loop and Stopwatch remember to put this at the end of the loop:

                // JIT optimization.
                if (i == 0)
                {
                    // Discard every result you've collected.
                    // And restart the timer.
                    stopwatch.Restart();
                }