Program.cs

using System;
using System.Threading;
using System.Threading.Tasks;

namespace Starvation
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(Environment.ProcessorCount);

            ThreadPool.SetMinThreads(8, 8);

            Task.Factory.StartNew(
                Producer,
                TaskCreationOptions.None);
            Console.ReadLine();
        }

        static void Producer()
        {
            while (true)
            {
                // Creating a new task instead of just calling Process
                // Needed to avoid blocking the loop since we removed the Task.Yield
                Task.Factory.StartNew(Process);

                Thread.Sleep(200);
            }
        }

        static async Task Process()
        {
            // Removed the Task.Yield

            var tcs = new TaskCompletionSource<bool>();

            Task.Run(() =>
            {
                Thread.Sleep(1000);
                tcs.SetResult(true);
            });

            tcs.Task.Wait();

            Console.WriteLine("Ended - " + DateTime.Now.ToLongTimeString());
        }
    }
}