How to test performance in C#

Keywords: Performace test, Win32, .Net Framework

In Win32,


Low resolution: GetTickCount() Api


High resolution: QueryPerformanceCounter() and QueryPerformanceFrequency()

In .Net


Low resolution: Enviroment.TickCount, the best resolution it will give you is 10 milliseconds.


High resolution: System.Diagnostics.Stopwatch class.

Stopwatch class usage:

        private void btnPerformaceTest_Click(object sender, EventArgs e)
        {
            System.Diagnostics.Stopwatch sw = new Stopwatch();
            sw.Start();
            //Process1();
            sw.Stop();
            System.Console.WriteLine(sw.ElapsedMilliseconds);
            
            sw.Reset();
            sw.Start();
            //Process2();
            sw.Stop();
            System.Console.WriteLine(sw.ElapsedMilliseconds);

            sw.Reset();
            sw.Start();
            //Process3();
            sw.Stop();
            System.Console.WriteLine(sw.ElapsedMilliseconds); 
        }