Stopwatch

Object –> Stopwatch

Example

Stopwatch sw = new Stopwatch();
sw.Start();
// …
sw.Stop();
TimeSpan ts = sw.Elapsed;
// Calling sw.Start() again here resumes the stopwatch at the elapsed time it was stopped

Methods

StartNew() — Start a new stopwatch timer Reset() — Reset a timer Restart() — Reset a timer and start it

Properties

Elapsed ElapsedMilliseconds ElapsedTicks — Ticks elapsed since stopwatch started/stopped Frequency — Ticks per second

Note: (1000L * 1000L * 1000L) / frequency = nanoseconds per tick IsHighResolution — If true, using system’s high-resolution performance counter. Else, DateTime class. IsRunning — Boolean if stopwatch is running

A Recorder Class to Monitor Performance

using System.Diagnostics;

public static class Recorder
{
    private static Stopwatch timer = new();
    private static long bytesPhysicalBefore = 0;
    private static long bytesVirtualBefore = 0;

    public static void Start()
    {
        // Store the current physical and virtual memory use:
        bytesPhysicalBefore = Process.GetCurrentProcess().WorkingSet64;
        bytesVirtualBefore = Process.GetCurrentProcess().VirtualMemorySize64;
        timer.Restart();
    }

    public static void Stop()
    {
        timer.Stop();
        long bytesPhysicalAfter = GetCurrentProcess().WorkingSet64;

        long bytesVirtualAfter = GetCurrentProcess().VirtualMemorySize64;

        Console.WriteLine($"{bytesPhysicalAfter - bytesPhysicalBefore}");
        Console.WriteLine($"{bytesVirtualAfter - bytesVirtualBefore}");
        Console.WriteLine($"{timer.Elapsed} elapsed.");
        Console.WriteLine($"{timer.ElapsedMilliseconds} ms elapsed.");
    }
}