public class TimingActionFilter : ActionFilterAttribute

    {

        public override void OnActionExecuting(ActionExecutingContext filterContext)

        {

            GetTimer(filterContext, "action").Start();

            base.OnActionExecuting(filterContext);

        }

        public override void OnActionExecuted(ActionExecutedContext filterContext)

        {

            GetTimer(filterContext, "action").Stop();

            base.OnActionExecuted(filterContext);

        }

        public override void OnResultExecuted(ResultExecutedContext filterContext)

        {

            var renderTimer = GetTimer(filterContext, "render");

            renderTimer.Stop();

            var actionTimer = GetTimer(filterContext, "action");

            if (actionTimer.ElapsedMilliseconds >= 100 || renderTimer.ElapsedMilliseconds >= 100)

            {

                LogHelper.WriteLog("运营监控(" + filterContext.RouteData.Values["controller"] + ")", String.Format(

                        "【{0}】-【{1}】,执行:{2}ms,渲染:{3}ms",

                        filterContext.RouteData.Values["controller"],

                        filterContext.RouteData.Values["action"],

                        actionTimer.ElapsedMilliseconds,

                        renderTimer.ElapsedMilliseconds

                    ));

            }

            base.OnResultExecuted(filterContext);

        }

        public override void OnResultExecuting(ResultExecutingContext filterContext)

        {

            GetTimer(filterContext, "render").Start();

            base.OnResultExecuting(filterContext);

        }

        private Stopwatch GetTimer(ControllerContext context, string name)

        {

            string key = "__timer__" + name;

            if (context.HttpContext.Items.Contains(key))

            {

                return (Stopwatch)context.HttpContext.Items[key];

            }

            var result = new Stopwatch();

            context.HttpContext.Items[key] = result;

            return result;

        }

    }