asp.net - 我如何获得更好的网站性能

Question

你好!

我在 Windows 2008 服务器上运行 IIS7。
在偷看时间，我们有以下行为:

CPU 负载接近空闲

请求排队(由资源监视器监控)

执行时间超过 10 秒

1-4) 请参阅以前的版本和编辑

5) 异步操作

按照建议，我创建了一个简单的网页……一页……带有以下代码隐藏:

using System;
using System.Threading;
using System.Web;
using System.Web.UI;

namespace PerformanceTest
{
    public partial class AsyncPage : Page
    {
        protected override void OnInit(EventArgs e)
        {
            base.OnInit(e);

            var pageAsyncTask = new PageAsyncTask(this.BeginAsyncOperation, this.EndAsyncOperation, this.TimeoutAsyncOperation, null);
            this.RegisterAsyncTask(pageAsyncTask);
            // or
            //this.AddOnPreRenderCompleteAsync(this.BeginAsyncOperation, this.EndAsyncOperation);

            // this might be useful for doing cleanup or sth alike
            this.PreRenderComplete += HandlePreRenderComplete;
        }

        private void HandlePreRenderComplete(object sender, EventArgs e)
        {
            this.Trace.Write("HandlePreRenderComplete");
            this.Trace.Write(string.Format("managedThreadId #{0}", Thread.CurrentThread.ManagedThreadId));
        }

        private delegate void Sleep(int miliseconds);

        private IAsyncResult BeginAsyncOperation(object sender, EventArgs e, AsyncCallback asyncCallback, object state)
        {
            this.Trace.Write("BeginAsyncOperation");
            this.Trace.Write(string.Format("managedThreadId #{0}", Thread.CurrentThread.ManagedThreadId));

            var sleep = new Sleep(Thread.Sleep);
            return sleep.BeginInvoke(1000, asyncCallback, state);
        }

        private void EndAsyncOperation(IAsyncResult asyncResult)
        {
            this.Trace.Write("EndAsyncOperation");
            this.Trace.Write(string.Format("managedThreadId #{0}", Thread.CurrentThread.ManagedThreadId));
        }

        private void TimeoutAsyncOperation(IAsyncResult asyncResult)
        {
            this.Trace.Write("TimeoutAsyncOperation");
            this.Trace.Write(string.Format("managedThreadId #{0}", Thread.CurrentThread.ManagedThreadId));
        }
    }
}

看起来很不错，不是吗？实际上它没有任何改变，因为压力超过 30 秒，响应时间高达 8 秒，CPU 使用率接近 0%。

6) 更新 machine.config

<system.net>
    <connectionManagement>
        <add address="*" maxconnection="12" />
    </connectionManagement>
</system.net>
<system.web>
    <processModel autoConfig="true"
                  maxWorkerThreads="100"
                  maxIoThreads="100"
                  minWorkerThreads="50"
                  minIoThreads="50" />
    <httpRuntime minFreeThreads="88"
                 minLocalRequestFreeThreads="76" />

</system.web>

Answer 1

http://geekswithblogs.net/StuartBrierley/archive/2009/09/30/tuning-iis---machine.config-settings.aspx