页面生成时间 - ASP.Net MVC

Question

我正在寻找一种方法来跟踪服务器生成页面所用的时间。我知道我可以使用 Trace 来跟踪它，但我需要一种方法来显示每页。

它的 ASP.Net MVC 2

Answer 1

你可以像 ActionFilterAttribute 一样实现它

[AttributeUsage(AttributeTargets.Class, AllowMultiple = false)]
public class LoggingAttribute : ActionFilterAttribute
{
    private readonly Stopwatch _sw;

    public LoggingAttribute()
    {
        _sw = new Stopwatch();
    }

    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        _sw.Start();
        Debug.WriteLine("Beginning executing: " + GetControllerAndActionName(filterContext.ActionDescriptor));
    }

    public override void OnActionExecuted(ActionExecutedContext filterContext)
    {
        _sw.Stop();
        var ms = _sw.ElapsedMilliseconds;

        Debug.WriteLine("Finishing executing: " + GetControllerAndActionName(filterContext.ActionDescriptor));
        Debug.WriteLine("Time elapsed: "+ TimeSpan.FromMilliseconds(ms).TotalSeconds);
    }

    private string GetControllerAndActionName(ActionDescriptor actionDescriptor)
    {
        return actionDescriptor.ControllerDescriptor.ControllerName + " - " + actionDescriptor.ActionName;
    }
}

用它装饰每个控制器或动作方法，瞧，它会在调试中吐出文本。

编辑：如果你想在页面上打印它，你可以将这个 sn-p 添加到 OnActionExecuted 方法中

if(filterContext.Result is ViewResult) { //Make sure the request is a ViewResult, ie. a page
  ((ViewResult) filterContext.Result).ViewData["ExecutionTime"] = ms; //Set the viewdata dictionary
}

现在你已经将执行时间保存在 ViewData 中，并且可以在页面中访问它。我通常这样放在母版页中

<!-- The page took <%= ViewData["ExecutionTime"] %> ms to execute -->

Answer 2

是的，Derin Suggestion 是在 ASP.NET 应用程序中执行此操作的标准方式，我只建议添加一个 if，这样它就不会干扰非 HTML 响应： 编辑：添加了完整的实现

public class PerformanceMonitorModule : IHttpModule
{

    public void Init(HttpApplication context)
    {
        context.PreRequestHandlerExecute += delegate(object sender, EventArgs e)
        {
            //Set Page Timer Star
            HttpContext requestContext = ((HttpApplication)sender).Context;
            Stopwatch timer = new Stopwatch();
            requestContext.Items["Timer"] = timer;
            timer.Start();
             };
        context.PostRequestHandlerExecute += delegate(object sender, EventArgs e)
        {

            HttpContext httpContext = ((HttpApplication)sender).Context;
            HttpResponse response = httpContext.Response;
            Stopwatch timer = (Stopwatch)httpContext.Items["Timer"];
            timer.Stop();

            // Don't interfere with non-HTML responses
            if (response.ContentType == "text/html")
            {
                double seconds = (double)timer.ElapsedTicks / Stopwatch.Frequency;
                string result_time = string.Format("{0:F4} sec ", seconds);
                RenderQueriesToResponse(response,result_time);
            }
        };
    }
    void RenderQueriesToResponse(HttpResponse response, string result_time)
    {
        response.Write("<div style=\"margin: 5px; background-color: #FFFF00\"");
        response.Write(string.Format("<b>Page Generated in "+ result_time));
        response.Write("</div>");
    }
    public void Dispose() { /* Not needed */ }
}

你也可以给它添加一些样式...

记得在 httpModules 部分的 WebConfig 中注册您的模块：

  <add name="Name" type="namespace, dll"/>

有关此内容的完整参考，请查看 Steven Sanderson 编写的 Pro ASP.NET MVC 框架 - 第 15 章 - 性能，监控页面生成时间。

编辑：（评论@Pino） 这是我的项目的示例： alt text http://www.diarioplus.com/files/pictures/example_performance.JPG

Answer 3

这取决于您希望在何处包含此信息。例如，您可以编写一个 http 处理程序，它将在 </html> 标记之后显示渲染时间：

public class RenderTimeModule : IHttpModule
{
    public void Init(HttpApplication context)
    {
        context.BeginRequest += (sender, e) =>
        {
            var watch = new Stopwatch();
            var app = (HttpApplication)sender;
            app.Context.Items["Stopwatch"] = watch;
            watch.Start();
        };

        context.EndRequest += (sender, e) =>
        {
            var app = (HttpApplication)sender;
            var watch = (Stopwatch)app.Context.Items["Stopwatch"];
            watch.Stop();
            var ts = watch.Elapsed;
            string elapsedTime = String.Format("{0} ms", ts.TotalMilliseconds);
            app.Context.Response.Write(elapsedTime);
        };
    }

    public void Dispose()
    {
    }
}

如果你想在 html 页面中间的某个地方显示渲染时间，那么这个渲染时间将不考虑总的页面渲染时间。