starvation.cs

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;

namespace ConsoleApp37
{
    class Program
    {
        static async Task Main(string[] args)
        {
            // simple starvation

            ThreadPool.SetMinThreads(30, 30);
            while (true)
            {
                var httpClient = new HttpClient();

                ThreadPool.GetMinThreads(out var wt, out var cpt);

                Console.WriteLine($"thread pool threads: cur={ThreadPool.ThreadCount} | min-worker={wt} | min-completion={cpt}");

                var getGoogle = Task.Run(async () =>
                {
                    var sw = Stopwatch.StartNew();
                    await Task.Delay(1).ConfigureAwait(false);
                    httpClient.GetAsync("https://google.com").GetAwaiter().GetResult();
                    return sw.Elapsed;
                });

                var lazyWaitsForGoogle = new Lazy<object>(() =>
                {
                    getGoogle.GetAwaiter().GetResult();
                    return new object();
                });

                var incomingLoad = new List<Task>();
                do
                {
                    incomingLoad.Add(Task.Run(async () =>
                    {
                        await Task.Delay(1).ConfigureAwait(false);
                        return lazyWaitsForGoogle.Value;
                    }));

                    if (incomingLoad.Count % Environment.ProcessorCount == 0)
                    {
                        await Task.Delay(1).ConfigureAwait(false);
                    }
                }
                while (!getGoogle.IsCompleted);

                Console.WriteLine($"[load] added: {incomingLoad.Count}");

                await Task.WhenAll(incomingLoad).ConfigureAwait(false);

                Console.WriteLine("[load] done");

                var elapsed = await getGoogle.ConfigureAwait(false);

                Console.WriteLine($"[target] done: {elapsed}");
            }
        }
    }
}