性能測試之如何獲取網頁相應時間

性能測試之如何獲取網頁相應時間

前一段時間，為了測試的需要，需要編寫一個多線程的程序，就是最大限度的訪問某個網頁上認證標簽，以獲得大概該認證標簽每秒鐘能響應多少次，于是搜索了一些網上的資料，于是編寫了下面的這個程序，雖然這個程序不是我們使用的最終版本，但是也反映了測試的思想，大家略微進行改造，就可以用于類似的測試。    using System;
using System.Net;
using System.IO;
using System.Threading;
using System.Timers;
using System.Text.RegularExpressions;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.ComponentModel;

namespace TestUrl
{

    internal class HiPerfTimer
    {
        [DllImport("Kernel32.dll")]
        private static extern bool QueryPerformanceCounter(
            out long lpPerformanceCount);

        [DllImport("Kernel32.dll")]
        private static extern bool QueryPerformanceFrequency(
            out long lpFrequency);

        private long startTime, stopTime;
        private long freq;

        // Constructor
        public HiPerfTimer()
        {
            startTime = 0;
            stopTime = 0;

            if (QueryPerformanceFrequency(out freq) == false)
            {
                // high-performance counter not supported
                throw new Win32Exception();
            }
        }

        // Start the timer
        public void Start()
        {
            // lets do the waiting threads there work
            Thread.Sleep(0);

            QueryPerformanceCounter(out startTime);
        }

        // Stop the timer
        public void Stop()
        {
            QueryPerformanceCounter(out stopTime);
        }

        // Returns the duration of the timer (in seconds)
        public double Duration
        {
            get
            {
                return (double)(stopTime - startTime) / (double)freq;
            }
        }
    }

    class Program
    {

        static long rt = 0;
        static long wr = 0;

        public static int PostData(string url, string data, out string info)
        {

            info = "";
            CookieContainer cc = new CookieContainer();
            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
        

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