using System;

using System.Threading;

using System.Threading.Tasks;

using System.Diagnostics;

public class Program

{

    public static async Task DoStuffAwait()

    {

        await Task.Delay(1000);

        Console.WriteLine("Done!");

    }

    public static void DoStuffBlocking()

    {

        Thread.Sleep(1000);

        Console.WriteLine("Done!");

    }

    public static async Task Main()

    {

        var stopwatch = new Stopwatch();

        // Measure performance of using Tasks with await

        stopwatch.Restart();

        var t1 = DoStuffAwait();

        var t2 = DoStuffAwait();

        var t3 = DoStuffAwait();

        await t1; await t2; await t3;

        stopwatch.Stop();

        Console.WriteLine($"Using tasks with await took {stopwatch.ElapsedMilliseconds}ms");

        // Measure performance not using Tasks

        stopwatch.Restart();

        DoStuffBlocking();

        DoStuffBlocking();

        DoStuffBlocking();

        stopwatch.Stop();

        Console.WriteLine($"Using blocking version took {stopwatch.ElapsedMilliseconds}ms");

    }

}