使用多核处理器处理任务

 //记录开始处理的时间
            Stopwatch paddingTime = new Stopwatch();
            paddingTime.Start();
            JobHelper jobHelper = new JobHelper();
            int orderCount = jobHelper.GetJobCount();
            mutex=new Mutex(false,"CNBlogs.EmulationSystem");
            if (!mutex.WaitOne(0,false))
            {
                Console.Out.WriteLine("Monitor already running...");
                return;
            }
            //TaskList(orderCount, jobHelper);
            int maxProNumber = 500;
            using (_semaphoreLimit=new Semaphore(0,maxProNumber))
            {
                //以指定的次数退出信号量并返回前一个计数
                _semaphoreLimit.Release(maxProNumber);
                var taskList = new List<Task>();
                for (int i = 0; i < orderCount; i++)
                {
                    int temp = i;
                    //如果SubmitJob有IO或者其他容易因为冲突而引起异常的话，这里需要加上lock
                    //lock (lockerObj)
                    //{
                    _semaphoreLimit.WaitOne();
                    taskList.Add(Task.Factory.StartNew(() =>
                    {
                        jobHelper.SubmitJob(temp);
                        //退出信号量并返回前一个计数
                        if (_semaphoreLimit != null) _semaphoreLimit.Release();
                    }));
                    //}
                }
                Task.WaitAll(taskList.ToArray());
            }
            paddingTime.Stop();
            var time = paddingTime.ElapsedMilliseconds;
            Console.WriteLine(string.Format("Complete： {0}, cost {1} ms",orderCount,time));

  public class JobHelper
    {
        public int GetJobCount()
        {
            return 100;
        }

        public bool SubmitJob(int jobId)
        {
            Thread.Sleep(1000);
            return true;
        }
    }