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    你的服务器IIS最大并发数有多少?

    栏目:win服务器问题汇总 时间:2018-08-06 10:53

    做完假设,现在做限制,设置站点保持HTTP连接,超时设置成0,就是不会超时。在站点请求的default.aspx页面设置线程Thread.Sleep(int.MaxValue),接下来开发一个用来保持连接的小程序。 测试系统Window 2003 Server ,IIS 6.0 ,ASP.Net 3.5 sp1
    Dual 1.8双核,2G内存,14G虚拟内存。
    为了探寻IIS的最大并发数,先要做几个假设。
    1、假设最大并发数就是当前的连接数。意思是当前能承受最大的连接,那么就表明最大的并发。
    2、假设IIS应用程序池处于默认状态,更改设置将会对最大连接数产生影响。
    做完假设,现在做限制,设置站点保持HTTP连接,超时设置成0,就是不会超时。在站点请求的default.aspx页面设置线程Thread.Sleep(int.MaxValue),接下来开发一个用来保持连接的小程序。
    复制代码 代码如下:
    class Program {
    private volatile static int errorCount = 0;
    private volatile static int rightCount = 0;
    static void Main(string[] args) {
    ServicePointManager.DefaultConnectionLimit = 10000;
    int count = 0;
    int all = 0;
    while (true) {
    all++; count++;
    CreateThread();
    Thread.Sleep(10);
    if (count >= 200) {
    Console.WriteLine(string.Format("sucess:{0};error:{1}", all - errorCount, errorCount));
    count = 0;
    }
    if (all > 1800)
    break;
    }
    Console.ReadKey();
    }
    static void CreateThread() {
    Thread thread = new Thread(ActiveRequest);
    thread.IsBackground = true;
    thread.Start();
    }
    static void ActiveRequest() {
    RequestClient client = new RequestClient("http://192.168.18.2/default.aspx?d=" + Guid.NewGuid());
    client.RequestProcess();
    if (client.IsError) {
    errorCount++;
    Console.WriteLine(string.Format("错误消息:{0}", client.Messages));
    } else {
    rightCount++;
    //Console.WriteLine(client.Messages);
    }
    }
    }

    using System;
    using System.Collections.Generic;
    using System.Text;
    using System.Net;
    using System.IO;
    namespace MaxLinked {
    /// <summary>
    ///
    /// </summary>
    public class RequestClient {
    HttpWebRequest request;
    WebResponse response;
    public RequestClient(string url) {
    request = (HttpWebRequest)HttpWebRequest.Create(url);
    request.Timeout = int.MaxValue;
    request.KeepAlive = true;
    ErrorCode = -1;
    }
    public void AddHeader(string name, string value) {
    request.Headers.Add(name, value);
    }
    private bool isError = false;
    private StringBuilder buffer = new StringBuilder();
    public int ErrorCode { get; set; }
    public bool IsError {
    get { return isError; }
    }
    public string Messages {
    get { return buffer.ToString(); }
    }
    public void RequestProcess() {
    try {
    response = request.GetResponse();
    } catch (WebException ex) {
    ErrorCode = (int)ex.Status;
    buffer.Append(ex.Message);
    isError = true;
    }
    if (response != null) {
    Stream stream = null;
    StreamReader reader = null;
    try {
    //stream = response.GetResponseStream();
    //reader = new StreamReader(stream, Encoding.UTF8);
    //buffer.Append(reader.ReadToEnd());