当多个RawFraction计数器共享一个分母时，请重用RawBase性能计数器

Question

我想为系统中可能发生的事件设置PerformanceCounters。我想以百分比（PerformanceCounterType.RawFraction）的形式显示几个不同事件的计数器，但是每个百分比共享相同的分母（PerformanceCounterType.RawBase）。

我认为将一个计数器用作所有RawFraction计数器的RawBase会很容易，但是我不知道如何。

这是一个人为的例子。

我为要计数的事件的不同风格设置了三个计数器：红色，绿色和蓝色。 （想象一下一个具有三个按钮的表单，我们只想计算每个按钮的点击百分比。）

我为事件总数设置了一个计数器：任何

当出现红色时，我增加红色和任意。当出现蓝色时，我增加蓝色和任意。当发生绿色时，我将增加绿色和任意值。

当我尝试将Any计数器重用为常见的RawBase计数器时，出现异常：

System.ArgumentException   
  HResult=0x80070057   
  Message=Cannot create Performance Category with counter name Any button because the name is a duplicate.   
  Source=System   
  StackTrace:    
   at System.Diagnostics.PerformanceCounterCategory.CheckValidCounterLayout(CounterCreationDataCollection counterData)

设置单独的RawBase计数器来计算许多共享相同分母的RawFraction值似乎过多。有什么建议吗？

这是一些测试代码。

public class PerfCounters
{

    private static string CategoryName = "Demo counters";
    private static string CategoryHelp = "Demo counters help";

    private static string buttonAnyCountName = "Any button";
    private static string buttonAnyCountHelp = "Any button help";
    private static PerformanceCounter buttonAnyCount;

    private static string buttonRedCountName = "% of Red button clicked";
    private static string buttonRedCountHelp = "Red button help";
    private static PerformanceCounter buttonRedCount;

    private static string buttonGreenCountName = "% of Green button clicked";
    private static string buttonGreenCountHelp = "Green button help";
    private static PerformanceCounter buttonGreenCount;

    private static string buttonBlueCountName = "% of Blue button clicked";
    private static string buttonBlueCountHelp = "Blue button help";
    private static PerformanceCounter buttonBlueCount;

    public PerfCounters()
    {
        if (PerformanceCounterCategory.Exists(CategoryName))
        {
            // this is a quick and dirty test, so it is easiest to delete and recreate the category on each run
            // just remmember to restart Performance Monitor after the counters are created.
            PerformanceCounterCategory.Delete(CategoryName);
        }

        CounterCreationDataCollection counterDataCollection = new CounterCreationDataCollection();
        counterDataCollection.Add(new CounterCreationData(buttonRedCountName, buttonRedCountHelp, PerformanceCounterType.RawFraction));
        counterDataCollection.Add(new CounterCreationData(buttonAnyCountName, buttonAnyCountHelp, PerformanceCounterType.RawBase));

        counterDataCollection.Add(new CounterCreationData(buttonBlueCountName, buttonBlueCountHelp, PerformanceCounterType.RawFraction));
        counterDataCollection.Add(new CounterCreationData(buttonAnyCountName, buttonAnyCountHelp, PerformanceCounterType.RawBase));

        counterDataCollection.Add(new CounterCreationData(buttonGreenCountName, buttonGreenCountHelp, PerformanceCounterType.RawFraction));
        counterDataCollection.Add(new CounterCreationData(buttonAnyCountName, buttonAnyCountHelp, PerformanceCounterType.RawBase));

        // next line throws 
        // System.ArgumentException - Cannot create Performance Category with counter name Any button because the name is a duplicate.
        PerformanceCounterCategory.Create(CategoryName, CategoryHelp, PerformanceCounterCategoryType.SingleInstance, counterDataCollection);

        buttonRedCount = new PerformanceCounter(CategoryName, buttonRedCountName, string.Empty, false);
        buttonBlueCount = new PerformanceCounter(CategoryName, buttonBlueCountName, string.Empty, false);
        buttonGreenCount = new PerformanceCounter(CategoryName, buttonGreenCountName, string.Empty, false);

        buttonAnyCount = new PerformanceCounter(CategoryName, buttonAnyCountName, string.Empty, false);
    }

    public void CountRed()
    {
        buttonRedCount.Increment();
        buttonAnyCount.Increment();
    }

    public void CountGreen()
    {
        buttonGreenCount.Increment();
        buttonAnyCount.Increment();
    }

    public void CountBlue()
    {
        buttonBlueCount.Increment();
        buttonAnyCount.Increment();
    }
}