这是粘贴中的代码
我正在使用此代码对我的服务器进行压力测试。我试过了webpound X 1000 http://local_dev.com
。
该代码似乎可以工作并且很好。它<100 行,不难理解。简而言之,它使用 webclient 在阻塞和异步模式下访问站点一次(因此它旁边的 while 循环)。然后它反复点击网站计算有多少成功。
问题出在两台不同的机器上,我在异步模式下得到 600-850(使用 0 作为第一个参数),在单线程模式下随机得到 160-350。
运行此应用程序时,我的 CPU 处于空闲状态。根据任务管理器,我的 webapp 从未达到 1%,webpound 不超过 2%,而 cpu 总量从未超过 5%。
这里有什么问题?服务器是使用 fastcgi 的 nginx。我怀疑问题出在 webclient/C# 上。有什么我可以使用的具有相同想法的另一个工具?或者我如何修改它以便我可以每秒击中更多?
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Diagnostics;
using System.IO;
namespace webpound
{
class Program
{
static long count = 0;
static void Main(string[] args)
{
var s = new Stopwatch();
var wc = new WebClient();
int time = 100, mthread=0;
if (args.Count() == 0)
{
Console.WriteLine("[1 (for single) [ms time]] url");
return;
}
string url = null;
bool useSingle = false;
if (args.Count() == 1)
{
url = args[0];;
}
else if (args.Count() == 2)
{
useSingle = args[0] == "1";
url = args[1];
}
else if (args.Count() == 3)
{
useSingle = args[0] == "1";
time = int.Parse(args[1]);
url = args[2];
}
else
{
throw new Exception();
}
var uri = new Uri(url);
wc.Headers["User-Agent"] = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1";
wc.DownloadStringCompleted += DownloadStringCompletedEventHandler;
//wc.DownloadProgressChanged += DownloadProgressChangedEventHandler;
wc.DownloadString(uri);
wc.DownloadStringAsync(uri);
while (System.Threading.Interlocked.Read(ref count)==0)
{
System.Threading.Thread.Sleep(1);
}
count = 0;
WebException ex1 = null;
s.Start();
try
{
while (s.ElapsedMilliseconds < time)
{
if (useSingle)
{
wc.DownloadString(url);
count++;
}
else
{
var wwc = new WebClient();
wwc.Headers["User-Agent"] = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1";
wwc.DownloadStringCompleted += DownloadStringCompletedEventHandler;
var url2 = url + mthread.ToString();
wwc.DownloadStringAsync(new Uri(url2));
mthread++;
System.Threading.Thread.Sleep(1);
}
}
}
catch(WebException ex)
{
ex1 = ex;
}
var mycount = count;
s.Stop();
if (ex1 == null)
{
Console.WriteLine("Finished with {0}/{1} in {2}", mycount,mthread, s.ElapsedMilliseconds);
}
else
{
var aa = new StreamReader(ex1.Response.GetResponseStream()).ReadToEnd();
Console.WriteLine(ex1.Message);
Console.WriteLine("Finished with {0}/{1} in {2}", mycount, mthread, s.ElapsedMilliseconds);
}
}
static void DownloadProgressChangedEventHandler(object sender, DownloadProgressChangedEventArgs e)
{
}
static void DownloadStringCompletedEventHandler(object sender, DownloadStringCompletedEventArgs e)
{
System.Threading.Interlocked.Increment(ref count);
}
}
}