大概每隔两个星期左右，秋色园上服务器就会来一次CPU百分百，由于问题发生的概率极低，要它重现也难，所以只能意淫是内存太少的原故。
以前出现，远程上去结束掉进程，就正常了，悲剧的是最近秋色园VPS不知啥原因，经常远程不上去， 最后转转折折只能进VPS管理后台重启。
要遇上CPU百分百，又是需要机缘，所以一旦发生和遇到解决的时间差度大，就会造成服务器长时间打不开，后果大伙都懂的。。。

因为更新网站dll时，偶尔有顺时达到100%，可能就1-2秒，可能会导致回收到，如果再有偶尔，就会造成死循环了。

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

namespace IISCpuForServer
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("监控IIS CPU w3wp 进程中，若100%，而自动结束该进程...");
            Thread thread = new Thread(new ThreadStart(Run));
            thread.IsBackground = true;
            thread.Start();
            Console.Read();
        }
        static void Run()
        {
            try
            {
                while (true)
                {
                    Process[] procs = Process.GetProcessesByName("w3wp");
                    if (procs != null && procs.Length > 0)
                    {

                        foreach (Process pro in procs)
                        {
                            if (!pro.HasExited)
                            {
                                CheckPro(pro);
                            }
                        }
                    }
                    Thread.Sleep(TimeSpan.FromMinutes(5));
                }
            }
            catch (Exception err)
            {
                Console.WriteLine(err.Message);
            }
        }
        static void CheckPro(Process pro)
        {
            int s = 0;//60秒。
            int killTimes = 0;
            //间隔时间（毫秒）
            int interval = 1000;
            //上次记录的CPU时间
            TimeSpan prevCpuTime = TimeSpan.Zero;
            while (true)
            {
                //当前时间
                TimeSpan curTime = pro.TotalProcessorTime;
                //间隔时间内的CPU运行时间除以逻辑CPU数量
                double value = (curTime - prevCpuTime).TotalMilliseconds / interval / Environment.ProcessorCount * 100;
                prevCpuTime = curTime;

                if (s > 0)
                {
                    if (value > 90 && value < 100)
                    {
                        killTimes++;
                        if (killTimes > 50)
                        {
                            Console.WriteLine(pro.Id + " 长期高CPU，秒杀...");
                            pro.Kill();
                            Thread.Sleep(TimeSpan.FromMinutes(3));
                            return;
                        }
                    }
                    else
                    {
                        killTimes = 0;
                    }
                    if (killTimes > 0)
                    {
                        Console.WriteLine(pro.Id + " CPU:" + value + " -- killtimes:" + killTimes);
                    }
                }
                Thread.Sleep(interval);
                if (s > 59)
                {
                    s = -1;
                    break;
                }
                else
                {
                    s++;
                }
            }
        }

    }
}