为什么我的ASP.NET MVC多实例性能计数器不起作用

Question

我很难让我们的多实例性能计数器在ASP.NET MVC 3中工作。将其创建为单个实例可以正常工作，并且在简单的控制台应用程序中运行我们的多实例性能计数器代码也可以正常工作。 但是，当我创建它的多实例并尝试使用ASP.NET对其进行递增时，它似乎很难工作。

我没有例外。 我根本看不到性能中的任何测量输出。 我可以看到两个实例。

这是用于创建性能计数器类别的控制台应用程序代码：

private const string PERF_COUNTER_CATEGORY_NAME = "MvcPerformance";
private const string PERF_COUNTER_BASE_NAME = "MvcAction_Base";
private const string PERF_COUNTER_NAME = "MvcAction";

static void Main(string[] args)
{
    if (PerformanceCounterCategory.Exists(PERF_COUNTER_CATEGORY_NAME))
    {
        PerformanceCounterCategory.Delete(PERF_COUNTER_CATEGORY_NAME);
    }

    CounterCreationDataCollection counters = new CounterCreationDataCollection();

    // Add the counter.
    CounterCreationData avgDuration = new CounterCreationData();
    avgDuration.CounterType = PerformanceCounterType.AverageTimer32;
    avgDuration.CounterName = PERF_COUNTER_NAME;
    counters.Add(avgDuration);

    CounterCreationData avgDurationBase = new CounterCreationData();
    avgDurationBase.CounterName = PERF_COUNTER_BASE_NAME;
    avgDurationBase.CounterType = PerformanceCounterType.AverageBase;
    counters.Add(avgDurationBase);

    // Create the category.
    PerformanceCounterCategory.Create(PERF_COUNTER_CATEGORY_NAME, "Performance counters for MVC!", PerformanceCounterCategoryType.MultiInstance, counters);
}

然后，ASP.NET MVC应用程序中的HomeController如下所示：

  private static readonly Random _Random = new Random(); private const string PERF_COUNTER_CATEGORY_NAME = "MvcPerformance"; private const string PERF_COUNTER_BASE_NAME = "MvcAction_Base"; private const string PERF_COUNTER_NAME = "MvcAction"; private static PerformanceCounter _MvcActionCounter = new PerformanceCounter { CounterName = PERF_COUNTER_NAME, CategoryName = PERF_COUNTER_CATEGORY_NAME, ReadOnly = false, InstanceName = "Home_Index", }; private static PerformanceCounter _MvcActionCounterBase = new PerformanceCounter { CounterName = PERF_COUNTER_BASE_NAME, CategoryName = PERF_COUNTER_CATEGORY_NAME, ReadOnly = false, InstanceName = "Home_Index_Base", }; public ActionResult Index() { Stopwatch s = new Stopwatch(); s.Start(); Thread.Sleep(_Random.Next(1000)); s.Stop(); // Increment the performance counters. _MvcActionCounter.IncrementBy(s.ElapsedMilliseconds); _MvcActionCounterBase.Increment(); return View(new HomeViewModel { ElapsedTime = s.Elapsed }); } 

这可能是我忘记的事情。 也许与权限或用户管理有关？

Answer 1

我的一位同事刚刚给我邮寄了答案。 基本计数器的实例名称必须与平均计数器的实例名称相同。

如果遇到这样的问题，请确保首先检查一下……可以节省大量时间。