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如何在系统中使用AverageTimer32和AverageBase性能计数器。诊断。秒表?

performancecounter .net c#

25

Eric Schoonover thSoft · 技术社区 · 16 年前

当我执行以下程序并查看性能计数器时,结果对我来说没有意义。平均值为零,最小值/最大值为~0.4,而我预期为~0.1或~100。

class Program
{
    const string CategoryName = "____Test Category";
    const string CounterName = "Average Operation Time";
    const string BaseCounterName = "Average Operation Time Base";

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

        var counterDataCollection = new CounterCreationDataCollection();

        var avgOpTimeCounter = new CounterCreationData()
        {
            CounterName = CounterName,
            CounterHelp = "Average Operation Time Help",
            CounterType = PerformanceCounterType.AverageTimer32
        };
        counterDataCollection.Add(avgOpTimeCounter);

        var avgOpTimeBaseCounter = new CounterCreationData()
        {
            CounterName = BaseCounterName,
            CounterHelp = "Average Operation Time Base Help",
            CounterType = PerformanceCounterType.AverageBase
        };
        counterDataCollection.Add(avgOpTimeBaseCounter);

        PerformanceCounterCategory.Create(CategoryName, "Test Perf Counters", PerformanceCounterCategoryType.SingleInstance, counterDataCollection);

        var counter = new PerformanceCounter(CategoryName, CounterName, false);
        var baseCounter = new PerformanceCounter(CategoryName, BaseCounterName, false);

        for (int i = 0; i < 500; i++)
        {
            var sw = Stopwatch.StartNew();
            Thread.Sleep(100);
            sw.Stop();

            Console.WriteLine(string.Format("t({0}) ms({1})", sw.Elapsed.Ticks, sw.Elapsed.TotalMilliseconds));
            counter.IncrementBy(sw.Elapsed.Ticks);
            baseCounter.Increment();
        }

        Console.Read();
    }
}

性能计数器屏幕截图 Performance Counter Screenshot http://friendfeed-media.com/50028bb6a0016931a3af5122774b56f93741bb5c

3 回复 | 直到 16 年前

1

35

Mark Seemann 16 年前

如果你使用 StopWatch.ElapsedTicks 而不是秒表。逝去。滴答,它应该工作。

这 documentation 包含有关此的更多信息。

2

9

Martin Liversage 9 年前

AverageTimer32 性能计数器 TimeSpan 而不是a Stopwatch

var performanceCounterTicks = timeSpan.Ticks*Stopwatch.Frequency/TimeSpan.TicksPerSecond;
averageTimerCounter.IncrementBy(performanceCounterTicks);
averageTimerCounterBase.Increment();

3

1

RobV8R 11 年前

TimeSpan , StopWatch ,或 DateTime 使用性能计数器时。相反,他建议在我的项目中添加以下原生方法:

internal static class NativeMethods
{
    [DllImport("Kernel32.dll")]
    public static extern void QueryPerformanceCounter(ref long ticks); 
}

当递增计数器时,他建议这样做:

public void Foo()
{
    var beginTicks = 0L;

    var endTicks = 0L;

    NativeMethods.QueryPerformanceCounter(ref beginTicks);

    // Do stuff

    NativeMethods.QueryPerformanceCounter(ref endTicks);

    this.Counter.IncrementBy(endTicks - beginTicks);
    this.BaseCounter.Increment();
}