我有一个 Windows 服务，它通过 WCF 服务接口(interface)为一些虚拟队列的消息提供服务。 我想公开两个性能计数器 -

1. 队列中的项目数
2. 每秒从队列中移除的项目数

第一个工作正常，第二个在 PerfMon.exe 中始终显示为 0，尽管 RawValue 看起来是正确的。

我正在创建这样的计数器 -

    internal const string PERF_COUNTERS_CATEGORY = "HRG.Test.GDSSimulator";
    internal const string PERF_COUNTER_ITEMSINQUEUE_COUNTER = "# Messages on queue";
    internal const string PERF_COUNTER_PNR_PER_SECOND_COUNTER = "# Messages read / sec";

if (!PerformanceCounterCategory.Exists(PERF_COUNTERS_CATEGORY))
{
    System.Diagnostics.Trace.WriteLine("Creating performance counter category: " + PERF_COUNTERS_CATEGORY);
    CounterCreationDataCollection counters = new CounterCreationDataCollection();

    CounterCreationData numberOfMessagesCounter = new CounterCreationData();
    numberOfMessagesCounter.CounterHelp = "This counter provides the number of messages exist in each simulated queue";
    numberOfMessagesCounter.CounterName = PERF_COUNTER_ITEMSINQUEUE_COUNTER;
    numberOfMessagesCounter.CounterType = PerformanceCounterType.NumberOfItems32;
    counters.Add(numberOfMessagesCounter);

    CounterCreationData messagesPerSecondCounter= new CounterCreationData();
    messagesPerSecondCounter.CounterHelp = "This counter provides the number of messages read from the queue per second";
    messagesPerSecondCounter.CounterName = PERF_COUNTER_PNR_PER_SECOND_COUNTER;
    messagesPerSecondCounter.CounterType = PerformanceCounterType.RateOfCountsPerSecond32;
    counters.Add(messagesPerSecondCounter);

    PerformanceCounterCategory.Create(PERF_COUNTERS_CATEGORY, "HRG Queue Simulator performance counters", PerformanceCounterCategoryType.MultiInstance,counters);
}

然后，在每次服务调用时，我都会增加相关计数器，对于每秒计数器，目前看起来像这样 -

messagesPerSecCounter = new PerformanceCounter();
messagesPerSecCounter.CategoryName = QueueSimulator.PERF_COUNTERS_CATEGORY;
messagesPerSecCounter.CounterName = QueueSimulator.PERF_COUNTER_PNR_PER_SECOND_COUNTER;
messagesPerSecCounter.MachineName = ".";
messagesPerSecCounter.InstanceName = this.ToString().ToLower();
messagesPerSecCounter.ReadOnly = false;

messagesPerSecCounter.Increment();

如前所述 - 如果我在调用 increment 之后放置一个断点，我可以看到 RawValue 不断增加，与对服务的调用一致(相当频繁，我认为每秒不止一次) 但性能计数器本身保持为 0。

提供“队列”中项目计数的性能计数器以相同的方式实现(尽管我分配 RawValue，而不是调用增量)工作得很好。

我错过了什么？

最佳答案

我最初也遇到过这个计数器的问题。 MSDN 有一个完整的工作示例，对我帮助很大:

http://msdn.microsoft.com/en-us/library/4bcx21aa.aspx

由于他们的示例相当冗长，我将其归结为一个方法来演示基本要素。运行时，我在 PerfMon 中看到每秒 10 次计数的预期值。

public static void Test()
{
    var ccdc = new CounterCreationDataCollection();

    // add the counter
    const string counterName = "RateOfCountsPerSecond64Sample";
    var rateOfCounts64 = new CounterCreationData
    {
        CounterType = PerformanceCounterType.RateOfCountsPerSecond64,
        CounterName = counterName
    };
    ccdc.Add(rateOfCounts64);

    // ensure category exists
    const string categoryName = "RateOfCountsPerSecond64SampleCategory";
    if (PerformanceCounterCategory.Exists(categoryName))
    {
        PerformanceCounterCategory.Delete(categoryName);
    }
    PerformanceCounterCategory.Create(categoryName, "",
        PerformanceCounterCategoryType.SingleInstance, ccdc);

    // create the counter
    var pc = new PerformanceCounter(categoryName, counterName, false);

    // send some sample data - roughly ten counts per second
    while (true)
    {
        pc.IncrementBy(10);
        System.Threading.Thread.Sleep(1000);
    }
}

我希望这对某人有帮助。

关于c# - RateOfCountsPerSecond32 类型的计数器始终显示 0，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/2238212/