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我正在使用以下代码尝试测试在增加并发连接数(即ClientCount应用程序配置值)时,网络消耗(从任务管理器的网络选项卡监控)是否会增加。但是我发现,即使我将客户端数量从100增加到500,网络消耗仍然相同(从客户端和服务器端都在3%-4%左右)。任何想法有什么不对?我想证明,如果客户端的并发数量增加,客户端和服务器的网络消耗将会增加。网络连接能力未得到充分利用,为什么?
这是我的应用程序配置和客户端代码。该URL是本地LAN中另一台计算机上的IIS 7.0位速率限制控制中承载的wmv文件。我使用VSTS 2008 + C#+ .Net 3.5开发控制台应用程序作为客户端。
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.net>
<connectionManagement>
<add address="*" maxconnection="1000000" />
</connectionManagement>
</system.net>
<appSettings>
<add key="URL" value="http://labtest2/test.wmv"/>
<add key="ClientCount" value="100"/>
<add key="Timeout" value="3600"/>
</appSettings>
</configuration>
class Program
{
private static int ClientCount = 100;
private static string TargetURL = String.Empty;
private static int Timeout = 200;
static void PerformanceWorker()
{
Stream dataStream = null;
HttpWebRequest request = null;
HttpWebResponse response = null;
StreamReader reader = null;
try
{
request = (HttpWebRequest)WebRequest.Create(TargetURL);
request.Timeout = Timeout * 1000;
request.Proxy = null;
response = (HttpWebResponse)request.GetResponse();
dataStream = response.GetResponseStream();
reader = new StreamReader(dataStream);
// 1 M at one time
char[] c = new char[1000 * 1000];
while (reader.Read(c, 0, c.Length) > 0)
{
Console.WriteLine(Thread.CurrentThread.ManagedThreadId + ":\t" + c[0]);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message + "\n" + ex.StackTrace);
}
finally
{
if (null != reader)
{
reader.Close();
}
if (null != dataStream)
{
dataStream.Close();
}
if (null != response)
{
response.Close();
}
}
}
static void Main(string[] args)
{
TargetURL = ConfigurationSettings.AppSettings["URL"];
ClientCount = Int32.Parse(ConfigurationSettings.AppSettings["ClientCount"]);
Timeout = Int32.Parse(ConfigurationSettings.AppSettings["Timeout"]);
Thread[] workers = new Thread[ClientCount];
for (int i = 0; i < ClientCount; i++)
{
workers[i] = new Thread((new ThreadStart(PerformanceWorker)));
}
for (int i = 0; i < ClientCount; i++)
{
workers[i].Start();
}
for (int i = 0; i < ClientCount; i++)
{
workers[i].Join();
}
return;
}
}
你是指在服务器端检查的限制? web.config或在IIS管理器中? – George2 2009-10-13 08:28:07
我已经尝试在Windows Server 2008的IIS 7上工作正常。但是在Windows 7的IIS 7上,它有问题,为什么? – George2 2009-10-13 10:03:41