C# Threading Memory Exception

I'm doing some college work and I'm supposed to simulate 10, 100, 1,000 and 10,000 threads doing 1,000,000 locks and unlocks in a mutex (`static Mutex m_mutex = new Mutex();`) and in a semaphore as mutex (`static SemaphoreSlim m_semaphore = new SemaphoreSlim(1);`, correct?). I'm having no trouble in the first three cases, but I got a Memory Exception in the 10,000 threads case. My code: ``` resultados.WriteLine("=== 10 threads ==="); ts = new TimeSpan(); media = 0; parcial = 0; resultados.WriteLine("Parciais:"); for (int i = 0; i < 10; i++) { parcial = LockAndUnlock_Semaphore_ComDisputa(10); media += parcial; ts = TimeSpan.FromTicks(parcial); resultados.WriteLine(ts.ToString()); } ts = TimeSpan.FromTicks(media / 10); resultados.WriteLine("Média: " + ts.ToString()); ``` I'm supposed to take 10 tests and measure the average. ``` private static long LockAndUnlock_Semaphore_ComDisputa(int numeroDeThreads) { Thread[] threads10 = new Thread[10]; Thread[] threads100 = new Thread[100]; Thread[] threads1000 = new Thread[1000]; Thread[] threads10000 = new Thread[10000]; //switch in the numeroDeThreads var //[...] case 10000: sw.Start(); for (int i = 0; i < numeroDeThreads; i++) { threads10000[i] = new Thread(LockUnlockSemaphore); threads10000[i].Priority = ThreadPriority.Highest; threads10000[i].Start(); } for (int i = 0; i < numeroDeThreads; i++) { threads10000[i].Join(); } sw.Stop(); break; //[...] return sw.ElapsedTicks; static void LockUnlockSemaphore() { for (int i = 0; i < 1000000; i++) { m_semaphore.Wait(); //thread dentro do semaforo m_semaphore.Release(); } } ``` While I post this question, I'm trying again but this this I create the thread vector like this: ``` Thread[] threads = new Thread[numeroDeThreads]; ``` I'm supposed to test in mutex and in semaphore as mutex, but the error happen in the just mutex. EDIT Even with the Thread[] threads = new Thread[numeroDeThreads]; I got outofmemoryexception =( ... Thanks in advance, Pedro Dusso