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Editorial Team
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Asked: 2026-05-23T01:55:29+00:00

I am trying to imitate a scenario where 300,000 consumers are accessing a server.

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I am trying to imitate a scenario where 300,000 consumers are accessing a server. So I am trying to create the pseudo clients, by repeatedly querying the server from the concurrent threads.

But the first hurdle to be cleared is, whether it is possible to run 300,000 threads on a PC? Here is a code which I am using to see intially how many max threads I can get, and later then replace the test function with the actual function:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;

namespace CheckThread
{
    class Program
    {
        static int count;

        public static void TestThread(int i)
        {
            while (true)
            {
                Console.Write("\rThread Executing : {0}", i);
                Thread.Sleep(500);
            }
        }

        static void Main(string[] args)
        {
            count = 0;
            int limit = 0;
            if (args.Length != 1)
            {
                Console.WriteLine("Usage CheckThread <number of threads>");
                return;
            }
            else
            {
                limit = Convert.ToInt32(args[0]);
            }
            Console.WriteLine();
            while (count < limit)
            {
                ThreadStart newThread = new ThreadStart(delegate { TestThread(count); });
                Thread mythread = new Thread(newThread);
                mythread.Start();
                Console.WriteLine("Thread # {0}", count++);
            }

            while (true)
            {
                Thread.Sleep(30*1000);
            }
        } // end of main
    } // end of CheckThread class
} // end of namespace

Now what I am trying might be unrealistic, but still, if there is a way out to do it and you know, then please help me.

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1 Answer

  1. Editorial Team

    Each thread will create its own stack and local storage, you are looking at roughly 512k of stack space per thread on a 32bit OS, I think the stack space doubles on a 64 bit OS. A quick back of the spreadsheet calc gives us 146.484375 gigs of stack space for your 300k clients.

    So, no, don’t create 300k threads, but rather use the threadpool to simulate 300k requests, although tbh I think you would be better off with several test clients spamming your server through a network interface.

    There are a lot of web load-testing tools available. Good starting point : http://www.webperformance.com/library/reports/TestingAspDotNet/

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