写发贴机器人遇到的一个问题

Question

已经写好了,是多线程的,可以识别验证码自动登陆的发贴机器人,经过实验发现开3个线程的时候效率最高,开再多的线程速度反而慢下来了,但是随后又发现,几个发贴机器人一起开,每个开3线程,总的效率提升非常多,这是为什么?
如果我想只开一个多线程的,让他效率最高,怎么做.

Answer 1

//刷课机 v0.3 多线程版using System;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.IO;
using System.Drawing;
using System.Threading;
using System.Timers;namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        int[] htable = new int[10] { 1470, 1896, 1875, 1465, 1543, 1592, 1526, 2437, 1379, 1739 };
        static CookieCollection cookiecoll;
        Encoding coding = Encoding.GetEncoding("UTF-8");
        bool bstart = false;
        int iFreq = 2;
        static int count = 0;
        static bool isDD = false;
        AutoResetEvent autoevent = new AutoResetEvent(true);
        Thread[] newThread = new Thread[50];
        static Thread kongzhi;        private string GetsRand()
        {
            int i, j;
            string sRand = null;
            try
            {
                HttpWebRequest request;
                HttpWebResponse response;
                request = (HttpWebRequest)WebRequest.Create(@"验证码图片地址");
                request.CookieContainer = new CookieContainer();
                request.Timeout = 200;
                request.CookieContainer.Add(cookiecoll);
                request.ServicePoint.Expect100Continue = false;
                response = (HttpWebResponse)request.GetResponse();
                Stream rp = response.GetResponseStream();
                Bitmap bmap = new Bitmap(rp);
                for (int num = 0; num <= 3; num++)
                {
                    Bitmap bbmp = bmap.Clone(new Rectangle(4 + 14 * num, 4, 8, 16), bmap.PixelFormat);
                    Color cc = bbmp.GetPixel(4, 0);
                    int hash = 0;
                    for (i = 0; i <= 7; i++)
                    {
                        for (j = 0; j <= 15; j++)
                        {
                            if (cc != bbmp.GetPixel(i, j))
                            {
                                bbmp.SetPixel(i, j, Color.White);
                                hash += i * j;
                            }
                            else
                            {
                                bbmp.SetPixel(i, j, Color.Black);
                            }
                        }
                    }
                    for (i = 0; i <= 9; i++)
                        if (htable[i] == hash)
                            break;
                    sRand += i.ToString();
                }
                response.Close();
            }
            catch (System.Exception ex)
            {
                //MessageBox.Show(ex.ToString());
            }
            return sRand;
        }        public Form1()
        {
            InitializeComponent();
        }        public void click(object sender, System.EventArgs e)
        {
            if (this.Visible)
            {
                this.Visible = false;
                this.Hide();
                this.WindowState = FormWindowState.Minimized;
            }
            else
            {
                this.Visible = true;
                this.Show();
                this.WindowState = FormWindowState.Normal;
            }
        }        private void Form1_Load(object sender, EventArgs e)
        {
            notifyIcon1.Icon = new Icon("MSN.ICO");
            notifyIcon1.Text = "";
            notifyIcon1.Visible = true;
            notifyIcon1.Click += new System.EventHandler(this.click);
            dateTimePicker1.MouseWheel += new MouseEventHandler(dateTimepicker1_mousewheel);
        }        private void dateTimepicker1_mousewheel(object sender, System.Windows.Forms.MouseEventArgs e)
        {        }        private void vv()
        {
            while (true)
            {
                try
                {
                    HttpWebRequest request;
                    HttpWebResponse response;
                    byte[] bdata;
                    string postMessage, rand;
                    rand = GetsRand();
                    request = (HttpWebRequest)WebRequest.Create(@"");
                    request.CookieContainer = new CookieContainer();
                    request.Timeout = 200;
                    request.CookieContainer.Add(cookiecoll);
                    request.Method = "POST";
                    request.AllowAutoRedirect = false;
                    request.ServicePoint.Expect100Continue = false;
                    request.KeepAlive = true;
                    request.Referer = @"";
                    request.Accept = @"application/x-shockwave-flash, image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*";
                    request.UserAgent = @"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)";
                    request.Host = @"";
                    request.ContentType = @"application/x-www-form-urlencoded";
                    postMessage = @"selectionId=" + rand;
                    bdata = coding.GetBytes(postMessage);
                    request.ContentLength = bdata.Length;
                    request.GetRequestStream().Write(bdata, 0, bdata.Length);
                    request.GetRequestStream().Flush();
                    request.GetRequestStream().Close();
                    response = (HttpWebResponse)request.GetResponse();
                    StreamReader readStream = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
                    response.Close();
                    count++;
                    this.Invalidate();
                    this.Update();
                    Thread.Sleep(20);
                }
                catch (System.Exception ex)
                {
                }
            }
        }        private void kz()
        {
            for (int i = 0; i < iFreq; i++)
            {
                newThread[i] = new Thread(vv);
                newThread[i].IsBackground = true;
                newThread[i].Start();
                Thread.Sleep(40);
            }
            autoevent.WaitOne();
            for (int i = 0; i < iFreq; i++)
                newThread[i].Abort();
        }

Answer 2

        private void button1_Click(object sender, EventArgs e)
        {
            HttpWebRequest request;
            HttpWebResponse response;
            byte[] bdata;
            string postMessage, rand;            if (bstart)
            {
                button1.Text = "开始";
                bstart = false;
                autoevent.Set();
            }
            else
            {
                timer1.Stop();
                button2.Text = "定时";
                button1.Text = "停止";
                bstart = true;
                autoevent.Reset();
                try
                {
                    request = (HttpWebRequest)WebRequest.Create(@"");
                    request.CookieContainer = new CookieContainer();
                    request.Timeout = 1000;
                    request.ServicePoint.Expect100Continue = false;
                    response = (HttpWebResponse)request.GetResponse();
                    cookiecoll = response.Cookies;
                    response.Close();                    rand = GetsRand();
                    request = (HttpWebRequest)WebRequest.Create(@"");
                    request.CookieContainer = new CookieContainer();
                    request.Timeout = 1000;
                    request.CookieContainer.Add(cookiecoll);
                    request.Method = "POST";
                    request.ServicePoint.Expect100Continue = false;
                    request.AllowAutoRedirect = false;
                    request.KeepAlive = true;
                    request.Accept = @"application/x-shockwave-flash, image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*";
                    request.UserAgent = @"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)";
                    request.Referer = @"";
                    request.Host = @"";
                    request.ContentType = @"application/x-www-form-urlencoded";
                    postMessage = @"";
                    bdata = coding.GetBytes(postMessage);
                    request.ContentLength = bdata.Length;
                    request.GetRequestStream().Write(bdata, 0, bdata.Length);
                    request.GetRequestStream().Flush();
                    request.GetRequestStream().Close();
                    StreamReader readStream = new StreamReader(request.GetResponse().GetResponseStream(), Encoding.UTF8);
                    response.Close();
                    kongzhi = new Thread(kz);
                    kongzhi.Start();
                }
                catch (System.Exception ex)
                {
                }
            }
        }        private void numericUpDown1_ValueChanged(object sender, EventArgs e)
        {
            iFreq = (int)numericUpDown1.Value;
        }        private void Form1_FormClosed(object sender, FormClosedEventArgs e)
        {
            Application.Exit();
        }        private void Form1_Paint(object sender, PaintEventArgs e)
        {
            label4.Text = "已刷" + count.ToString() + "次";
        }        private void Form1_SizeChanged(object sender, EventArgs e)
        {
            if (this.WindowState == FormWindowState.Minimized)
            {
                this.Hide();
            }
        }        private void timer1_Tick(object sender, EventArgs e)
        {
            button1_Click(sender, e);
        }        private void button2_Click(object sender, EventArgs e)
        {
            if ((isDD) || (bstart))
            {
                button2.Text = "定时";
                isDD = false;
                timer1.Stop();
            }
            else
            {
                System.DateTime now = System.DateTime.Now;
                if (now.CompareTo(dateTimePicker1.Value) > 0)
                    return;
                timer1.Interval = (int)dateTimePicker1.Value.Subtract(now).TotalMilliseconds;
                isDD = true;
                button2.Text = "停止";
                timer1.Start();
            }
        }
    }
}

Answer 3

其实是个刷个机,带一个定时功能,timer1就是实现定时功能的定时器,敏感信息已经让我删了,因为有网址和密码