GC Worse Case

class MyCls
{
    public int Data;
}

class Program
{
    const int m_ArrSize = 299999999;
    //const int m_ArrSize = 50000000;

    static long GetTickMS()
    {
        return DateTime.Now.Ticks / 10000;
    }

    static void Main(string[] args)
    {
        Console.WriteLine("Start");
        Random random = new Random();

        MyCls[] arr = new MyCls[m_ArrSize];

        long maxDelay = 0;
        long startTick = GetTickMS();
        long level = 100;

        for (; ; )
        {
            int[] pos = new int[] { random.Next(m_ArrSize), random.Next(m_ArrSize), random.Next(m_ArrSize) };

            for (int i = 0; i < 3; i++)
            {
                int idx = random.Next(3);
                arr[pos[idx]] = new MyCls();
            }

            for (int idx = 0; idx < 3; idx++)
                arr[pos[idx]] = null;

            long delayTick = GetTickMS() - startTick;
            maxDelay = Math.Max(maxDelay, delayTick);

            if (maxDelay > level)
            {
                Console.WriteLine("GC Pause Delay: {0}MS, level: {1}", maxDelay, level);
                level += 100;
            }

            startTick = GetTickMS();
        }
        Console.ReadKey();
    }
}