PerformanceCounterType Enumeración

Definición

public enum class PerformanceCounterType

public enum PerformanceCounterType

[System.ComponentModel.TypeConverter(typeof(System.Diagnostics.AlphabeticalEnumConverter))]
public enum PerformanceCounterType

type PerformanceCounterType = 

[<System.ComponentModel.TypeConverter(typeof(System.Diagnostics.AlphabeticalEnumConverter))>]
type PerformanceCounterType = 

Public Enum PerformanceCounterType

Herencia

Object

ValueType

Enum

PerformanceCounterType

Atributos

TypeConverterAttribute

Campos

Ejemplos

En los ejemplos siguientes se muestran varios de los tipos de contador de la enumeración PerformanceCounterType.

AverageCount64

using System;
using System.Collections;
using System.Collections.Specialized;
using System.Diagnostics;

public class App
{
    private static PerformanceCounter avgCounter64Sample;
    private static PerformanceCounter avgCounter64SampleBase;

    public static void Main()
    {
        ArrayList samplesList = new ArrayList();

        // If the category does not exist, create the category and exit.
        // Performance counters should not be created and immediately used.
        // There is a latency time to enable the counters, they should be created
        // prior to executing the application that uses the counters.
        // Execute this sample a second time to use the category.
        if (SetupCategory())
            return;
        CreateCounters();
        CollectSamples(samplesList);
        CalculateResults(samplesList);
    }

    private static bool SetupCategory()
    {
        if ( !PerformanceCounterCategory.Exists("AverageCounter64SampleCategory") )
        {

            CounterCreationDataCollection counterDataCollection = new CounterCreationDataCollection();

            // Add the counter.
            CounterCreationData averageCount64 = new CounterCreationData();
            averageCount64.CounterType = PerformanceCounterType.AverageCount64;
            averageCount64.CounterName = "AverageCounter64Sample";
            counterDataCollection.Add(averageCount64);

            // Add the base counter.
            CounterCreationData averageCount64Base = new CounterCreationData();
            averageCount64Base.CounterType = PerformanceCounterType.AverageBase;
            averageCount64Base.CounterName = "AverageCounter64SampleBase";
            counterDataCollection.Add(averageCount64Base);

            // Create the category.
            PerformanceCounterCategory.Create("AverageCounter64SampleCategory",
                "Demonstrates usage of the AverageCounter64 performance counter type.",
                PerformanceCounterCategoryType.SingleInstance, counterDataCollection);

            return(true);
        }
        else
        {
            Console.WriteLine("Category exists - AverageCounter64SampleCategory");
            return(false);
        }
    }

    private static void CreateCounters()
    {
        // Create the counters.

        avgCounter64Sample = new PerformanceCounter("AverageCounter64SampleCategory",
            "AverageCounter64Sample",
            false);


        avgCounter64SampleBase = new PerformanceCounter("AverageCounter64SampleCategory",
            "AverageCounter64SampleBase",
            false);

        avgCounter64Sample.RawValue=0;
        avgCounter64SampleBase.RawValue=0;
    }
    private static void CollectSamples(ArrayList samplesList)
    {

        Random r = new Random( DateTime.Now.Millisecond );

        // Loop for the samples.
        for (int j = 0; j < 100; j++)
        {

            int value = r.Next(1, 10);
            Console.Write(j + " = " + value);

            avgCounter64Sample.IncrementBy(value);

            avgCounter64SampleBase.Increment();

            if ((j % 10) == 9)
            {
                OutputSample(avgCounter64Sample.NextSample());
                samplesList.Add( avgCounter64Sample.NextSample() );
            }
            else
            {
                Console.WriteLine();
            }

            System.Threading.Thread.Sleep(50);
        }
    }

    private static void CalculateResults(ArrayList samplesList)
    {
        for(int i = 0; i < (samplesList.Count - 1); i++)
        {
            // Output the sample.
            OutputSample( (CounterSample)samplesList[i] );
            OutputSample( (CounterSample)samplesList[i+1] );

            // Use .NET to calculate the counter value.
            Console.WriteLine(".NET computed counter value = " +
                CounterSampleCalculator.ComputeCounterValue((CounterSample)samplesList[i],
                (CounterSample)samplesList[i+1]) );

            // Calculate the counter value manually.
            Console.WriteLine("My computed counter value = " +
                MyComputeCounterValue((CounterSample)samplesList[i],
                (CounterSample)samplesList[i+1]) );
        }
    }

    //++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    //    Description - This counter type shows how many items are processed, on average,
    //        during an operation. Counters of this type display a ratio of the items
    //        processed (such as bytes sent) to the number of operations completed. The
    //        ratio is calculated by comparing the number of items processed during the
    //        last interval to the number of operations completed during the last interval.
    // Generic type - Average
    //      Formula - (N1 - N0) / (D1 - D0), where the numerator (N) represents the number
    //        of items processed during the last sample interval and the denominator (D)
    //        represents the number of operations completed during the last two sample
    //        intervals.
    //    Average (Nx - N0) / (Dx - D0)
    //    Example PhysicalDisk\ Avg. Disk Bytes/Transfer
    //++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    private static Single MyComputeCounterValue(CounterSample s0, CounterSample s1)
    {
        Single numerator = (Single)s1.RawValue - (Single)s0.RawValue;
        Single denomenator = (Single)s1.BaseValue - (Single)s0.BaseValue;
        Single counterValue = numerator / denomenator;
        return(counterValue);
    }

    // Output information about the counter sample.
    private static void OutputSample(CounterSample s)
    {
        Console.WriteLine("\r\n+++++++++++");
        Console.WriteLine("Sample values - \r\n");
        Console.WriteLine("   BaseValue        = " + s.BaseValue);
        Console.WriteLine("   CounterFrequency = " + s.CounterFrequency);
        Console.WriteLine("   CounterTimeStamp = " + s.CounterTimeStamp);
        Console.WriteLine("   CounterType      = " + s.CounterType);
        Console.WriteLine("   RawValue         = " + s.RawValue);
        Console.WriteLine("   SystemFrequency  = " + s.SystemFrequency);
        Console.WriteLine("   TimeStamp        = " + s.TimeStamp);
        Console.WriteLine("   TimeStamp100nSec = " + s.TimeStamp100nSec);
        Console.WriteLine("++++++++++++++++++++++");
    }
}

Imports System.Collections
Imports System.Collections.Specialized
Imports System.Diagnostics
Imports System.Runtime.Versioning

<SupportedOSPlatform("Windows")>
Public Class App1

    Private Shared avgCounter64Sample As PerformanceCounter
    Private Shared avgCounter64SampleBase As PerformanceCounter

    Public Shared Sub Main()

        Dim samplesList As New ArrayList()
        'If the category does not exist, create the category and exit.
        'Performance counters should not be created and immediately used.
        'There is a latency time to enable the counters, they should be created
        'prior to executing the App1lication that uses the counters.
        'Execute this sample a second time to use the counters.
        If Not (SetupCategory()) Then
            CreateCounters()
            CollectSamples(samplesList)
            CalculateResults(samplesList)
        End If

    End Sub

    Private Shared Function SetupCategory() As Boolean
        If Not PerformanceCounterCategory.Exists("AverageCounter64SampleCategory") Then

            Dim counterDataCollection As New CounterCreationDataCollection()

            ' Add the counter.
            Dim averageCount64 As New CounterCreationData()
            averageCount64.CounterType = PerformanceCounterType.AverageCount64
            averageCount64.CounterName = "AverageCounter64Sample"
            counterDataCollection.Add(averageCount64)

            ' Add the base counter.
            Dim averageCount64Base As New CounterCreationData()
            averageCount64Base.CounterType = PerformanceCounterType.AverageBase
            averageCount64Base.CounterName = "AverageCounter64SampleBase"
            counterDataCollection.Add(averageCount64Base)

            ' Create the category.
            PerformanceCounterCategory.Create("AverageCounter64SampleCategory",
               "Demonstrates usage of the AverageCounter64 performance counter type.",
                      PerformanceCounterCategoryType.SingleInstance, counterDataCollection)

            Return True
        Else
            Console.WriteLine("Category exists - AverageCounter64SampleCategory")
            Return False
        End If
    End Function 'SetupCategory

    Private Shared Sub CreateCounters()
        ' Create the counters.

        avgCounter64Sample = New PerformanceCounter("AverageCounter64SampleCategory", "AverageCounter64Sample", False)

        avgCounter64SampleBase = New PerformanceCounter("AverageCounter64SampleCategory", "AverageCounter64SampleBase", False)

        avgCounter64Sample.RawValue = 0
        avgCounter64SampleBase.RawValue = 0
    End Sub

    Private Shared Sub CollectSamples(ByVal samplesList As ArrayList)

        Dim r As New Random(DateTime.Now.Millisecond)

        ' Loop for the samples.
        Dim j As Integer
        For j = 0 To 99

            Dim value As Integer = r.Next(1, 10)
            Console.Write(j.ToString() + " = " + value.ToString())

            avgCounter64Sample.IncrementBy(value)

            avgCounter64SampleBase.Increment()

            If j Mod 10 = 9 Then
                OutputSample(avgCounter64Sample.NextSample())
                samplesList.Add(avgCounter64Sample.NextSample())
            Else
                Console.WriteLine()
            End If
            System.Threading.Thread.Sleep(50)
        Next j
    End Sub

    Private Shared Sub CalculateResults(ByVal samplesList As ArrayList)
        Dim i As Integer
        For i = 0 To (samplesList.Count - 1) - 1
            ' Output the sample.
            OutputSample(CType(samplesList(i), CounterSample))
            OutputSample(CType(samplesList((i + 1)), CounterSample))

            ' Use .NET to calculate the counter value.
            Console.WriteLine(".NET computed counter value = " + CounterSampleCalculator.ComputeCounterValue(CType(samplesList(i), CounterSample), CType(samplesList((i + 1)), CounterSample)).ToString())

            ' Calculate the counter value manually.
            Console.WriteLine("My computed counter value = " + MyComputeCounterValue(CType(samplesList(i), CounterSample), CType(samplesList((i + 1)), CounterSample)).ToString())
        Next i
    End Sub

    '++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    '	Description - This counter type shows how many items are processed, on average,
    '		during an operation. Counters of this type display a ratio of the items 
    '		processed (such as bytes sent) to the number of operations completed. The  
    '		ratio is calculated by comparing the number of items processed during the 
    '		last interval to the number of operations completed during the last interval. 
    ' Generic type - Average
    '  	Formula - (N1 - N0) / (D1 - D0), where the numerator (N) represents the number 
    '		of items processed during the last sample interval and the denominator (D) 
    '		represents the number of operations completed during the last two sample 
    '		intervals. 
    '	Average (Nx - N0) / (Dx - D0)  
    '	Example PhysicalDisk\ Avg. Disk Bytes/Transfer 
    '++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    Private Shared Function MyComputeCounterValue(ByVal s0 As CounterSample, ByVal s1 As CounterSample) As [Single]
        Dim numerator As [Single] = CType(s1.RawValue, [Single]) - CType(s0.RawValue, [Single])
        Dim denomenator As [Single] = CType(s1.BaseValue, [Single]) - CType(s0.BaseValue, [Single])
        Dim counterValue As [Single] = numerator / denomenator
        Return counterValue
    End Function 'MyComputeCounterValue

    ' Output information about the counter sample.
    Private Shared Sub OutputSample(ByVal s As CounterSample)
        Console.WriteLine(ControlChars.Lf + ControlChars.Cr + "+++++++++++")
        Console.WriteLine("Sample values - " + ControlChars.Lf + ControlChars.Cr)
        Console.WriteLine(("   BaseValue        = " + s.BaseValue.ToString()))
        Console.WriteLine(("   CounterFrequency = " + s.CounterFrequency.ToString()))
        Console.WriteLine(("   CounterTimeStamp = " + s.CounterTimeStamp.ToString()))
        Console.WriteLine(("   CounterType      = " + s.CounterType.ToString()))
        Console.WriteLine(("   RawValue         = " + s.RawValue.ToString()))
        Console.WriteLine(("   SystemFrequency  = " + s.SystemFrequency.ToString()))
        Console.WriteLine(("   TimeStamp        = " + s.TimeStamp.ToString()))
        Console.WriteLine(("   TimeStamp100nSec = " + s.TimeStamp100nSec.ToString()))
        Console.WriteLine("++++++++++++++++++++++")
    End Sub
End Class

AverageTimer32

using System;
using System.Collections;
using System.Diagnostics;
using System.Runtime.Versioning;

[SupportedOSPlatform("Windows")]
public class App2
{
    private static PerformanceCounter PC;
    private static PerformanceCounter BPC;

    private const String categoryName = "AverageTimer32SampleCategory";
    private const String counterName = "AverageTimer32Sample";
    private const String baseCounterName = "AverageTimer32SampleBase";

    public static void Main()
    {
        ArrayList samplesList = new ArrayList();

        // If the category does not exist, create the category and exit.
        // Performance counters should not be created and immediately used.
        // There is a latency time to enable the counters, they should be created
        // prior to executing the application that uses the counters.
        // Execute this sample a second time to use the category.
        if (SetupCategory())
            return;
        CreateCounters();
        CollectSamples(samplesList);
        CalculateResults(samplesList);
    }

    private static bool SetupCategory()
    {
        if (!PerformanceCounterCategory.Exists(categoryName))
        {

            CounterCreationDataCollection CCDC = new CounterCreationDataCollection();

            // Add the counter.
            CounterCreationData averageTimer32 = new CounterCreationData();
            averageTimer32.CounterType = PerformanceCounterType.AverageTimer32;
            averageTimer32.CounterName = counterName;
            CCDC.Add(averageTimer32);

            // Add the base counter.
            CounterCreationData averageTimer32Base = new CounterCreationData();
            averageTimer32Base.CounterType = PerformanceCounterType.AverageBase;
            averageTimer32Base.CounterName = baseCounterName;
            CCDC.Add(averageTimer32Base);

            // Create the category.
            PerformanceCounterCategory.Create(categoryName,
                "Demonstrates usage of the AverageTimer32 performance counter type",
                PerformanceCounterCategoryType.SingleInstance, CCDC);

            Console.WriteLine("Category created - " + categoryName);

            return (true);
        }
        else
        {
            Console.WriteLine("Category exists - " + categoryName);
            return (false);
        }
    }

    private static void CreateCounters()
    {
        // Create the counters.
        PC = new PerformanceCounter(categoryName,
                 counterName,
                 false);

        BPC = new PerformanceCounter(categoryName,
            baseCounterName,
            false);

        PC.RawValue = 0;
        BPC.RawValue = 0;
    }

    private static void CollectSamples(ArrayList samplesList)
    {

        Random r = new Random(DateTime.Now.Millisecond);

        // Loop for the samples.
        for (int i = 0; i < 10; i++)
        {

            PC.RawValue = Stopwatch.GetTimestamp();

            BPC.IncrementBy(10);

            System.Threading.Thread.Sleep(1000);

            Console.WriteLine("Next value = " + PC.NextValue().ToString());
            samplesList.Add(PC.NextSample());
        }
    }

    private static void CalculateResults(ArrayList samplesList)
    {
        for (int i = 0; i < (samplesList.Count - 1); i++)
        {
            // Output the sample.
            OutputSample((CounterSample)samplesList[i]);
            OutputSample((CounterSample)samplesList[i + 1]);

            // Use .NET to calculate the counter value.
            Console.WriteLine(".NET computed counter value = " +
                CounterSample.Calculate((CounterSample)samplesList[i],
                (CounterSample)samplesList[i + 1]));

            // Calculate the counter value manually.
            Console.WriteLine("My computed counter value = " +
                MyComputeCounterValue((CounterSample)samplesList[i],
                (CounterSample)samplesList[i + 1]));
        }
    }

    //++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//+++++++
    // PERF_AVERAGE_TIMER
    //  Description - This counter type measures the time it takes, on
    //     average, to complete a process or operation. Counters of this
    //     type display a ratio of the total elapsed time of the sample
    //     interval to the number of processes or operations completed
    //     during that time. This counter type measures time in ticks
    //     of the system clock. The F variable represents the number of
    //     ticks per second. The value of F is factored into the equation
    //     so that the result can be displayed in seconds.
    //
    //  Generic type - Average
    //
    //  Formula - ((N1 - N0) / F) / (D1 - D0), where the numerator (N)
    //     represents the number of ticks counted during the last
    //     sample interval, F represents the frequency of the ticks,
    //     and the denominator (D) represents the number of operations
    //     completed during the last sample interval.
    //
    //  Average - ((Nx - N0) / F) / (Dx - D0)
    //
    //  Example - PhysicalDisk\ Avg. Disk sec/Transfer
    //++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//+++++++
    private static Single MyComputeCounterValue(CounterSample s0, CounterSample s1)
    {
        Int64 n1 = s1.RawValue;
        Int64 n0 = s0.RawValue;
        ulong f = (ulong)s1.SystemFrequency;
        Int64 d1 = s1.BaseValue;
        Int64 d0 = s0.BaseValue;

        double numerator = (double)(n1 - n0);
        double denominator = (double)(d1 - d0);
        Single counterValue = (Single)((numerator / f) / denominator);
        return (counterValue);
    }

    // Output information about the counter sample.
    private static void OutputSample(CounterSample s)
    {
        Console.WriteLine("+++++++++++");
        Console.WriteLine("Sample values - \r\n");
        Console.WriteLine("   CounterType      = " + s.CounterType);
        Console.WriteLine("   RawValue         = " + s.RawValue);
        Console.WriteLine("   BaseValue        = " + s.BaseValue);
        Console.WriteLine("   CounterFrequency = " + s.CounterFrequency);
        Console.WriteLine("   CounterTimeStamp = " + s.CounterTimeStamp);
        Console.WriteLine("   SystemFrequency  = " + s.SystemFrequency);
        Console.WriteLine("   TimeStamp        = " + s.TimeStamp);
        Console.WriteLine("   TimeStamp100nSec = " + s.TimeStamp100nSec);
        Console.WriteLine("++++++++++++++++++++++");
    }
}

Imports System.Collections
Imports System.Collections.Specialized
Imports System.Diagnostics
Imports System.Runtime.InteropServices
Imports System.Runtime.Versioning

<SupportedOSPlatform("Windows")>
Public Class App

    Private Const categoryName As String = "AverageTimer32SampleCategory"
    Private Const counterName As String = "AverageTimer32Sample"
    Private Const baseCounterName As String = "AverageTimer32SampleBase"

    Private Shared PC As PerformanceCounter
    Private Shared BPC As PerformanceCounter


    Public Shared Sub Main()
        Dim samplesList As New ArrayList()

        SetupCategory()
        CreateCounters()
        CollectSamples(samplesList)
        CalculateResults(samplesList)
    End Sub


    Private Shared Function SetupCategory() As Boolean

        If Not PerformanceCounterCategory.Exists(categoryName) Then

            Dim CCDC As New CounterCreationDataCollection()

            ' Add the counter.
            Dim averageTimer32 As New CounterCreationData()
            averageTimer32.CounterType = PerformanceCounterType.AverageTimer32
            averageTimer32.CounterName = counterName
            CCDC.Add(averageTimer32)

            ' Add the base counter.
            Dim averageTimer32Base As New CounterCreationData()
            averageTimer32Base.CounterType = PerformanceCounterType.AverageBase
            averageTimer32Base.CounterName = baseCounterName
            CCDC.Add(averageTimer32Base)

            ' Create the category.
            PerformanceCounterCategory.Create( _
               categoryName, _
               "Demonstrates usage of the AverageTimer32 performance counter type", _
                 PerformanceCounterCategoryType.SingleInstance, CCDC)

            Console.WriteLine("Category created - " + categoryName)

            Return True
        Else
            Console.WriteLine(("Category exists - " + _
               categoryName))
            Return False
        End If
    End Function


    Private Shared Sub CreateCounters()
        ' Create the counters.
        PC = New PerformanceCounter(categoryName, _
              counterName, False)

        BPC = New PerformanceCounter(categoryName, _
              baseCounterName, False)

        PC.RawValue = 0
        BPC.RawValue = 0
    End Sub


    Private Shared Sub CollectSamples(ByVal samplesList As ArrayList)

        Dim r As New Random(DateTime.Now.Millisecond)

        ' Loop for the samples.
        Dim i As Integer
        For i = 0 To 9

            PC.RawValue = Stopwatch.GetTimeStamp()

            BPC.IncrementBy(10)

            System.Threading.Thread.Sleep(1000)
            Console.WriteLine(("Next value = " + PC.NextValue().ToString()))
            samplesList.Add(PC.NextSample())
        Next i
    End Sub


    Private Shared Sub CalculateResults(ByVal samplesList As ArrayList)
        Dim i As Integer
        Dim sample1 As CounterSample
        Dim sample2 As CounterSample
        For i = 0 To (samplesList.Count - 1) - 1
            ' Output the sample.
            sample1 = CType(samplesList(i), CounterSample)
            sample2 = CType(samplesList(i + 1), CounterSample)
            OutputSample(sample1)
            OutputSample(sample2)

            ' Use .NET to calculate the counter value.
            Console.WriteLine((".NET computed counter value = " _
               + CounterSample.Calculate(sample1, sample2).ToString()))

            ' Calculate the counter value manually.
            Console.WriteLine(("My computed counter value = " _
               + MyComputeCounterValue(sample1, sample2).ToString()))

        Next i
    End Sub


    '++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//+++++++
    ' PERF_AVERAGE_TIMER
    '  Description - This counter type measures the time it takes, on 
    '     average, to complete a process or operation. Counters of this
    '     type display a ratio of the total elapsed time of the sample 
    '     interval to the number of processes or operations completed
    '     during that time. This counter type measures time in ticks 
    '     of the system clock. The F variable represents the number of
    '     ticks per second. The value of F is factored into the equation
    '     so that the result can be displayed in seconds.
    '
    '  Generic type - Average
    '
    '  Formula - ((N1 - N0) / F) / (D1 - D0), where the numerator (N)
    '     represents the number of ticks counted during the last 
    '     sample interval, F represents the frequency of the ticks, 
    '     and the denominator (D) represents the number of operations
    '     completed during the last sample interval.
    '
    '  Average - ((Nx - N0) / F) / (Dx - D0)
    '
    '  Example - PhysicalDisk\ Avg. Disk sec/Transfer 
    '++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//+++++++
    Private Shared Function MyComputeCounterValue( _
    ByVal s0 As CounterSample, _
    ByVal s1 As CounterSample) As Single
        Dim n1 As Int64 = s1.RawValue
        Dim n0 As Int64 = s0.RawValue
        Dim f As Decimal = CType(s1.SystemFrequency, Decimal)
        Dim d1 As Int64 = s1.BaseValue
        Dim d0 As Int64 = s0.BaseValue

        Dim numerator As Double = System.Convert.ToDouble(n1 - n0)
        Dim denominator As Double = System.Convert.ToDouble(d1 - d0)
        Dim counterValue As Single = CType(numerator, Single)
        counterValue = counterValue / CType(f, Single)
        counterValue = counterValue / CType(denominator, Single)

        Return counterValue
    End Function


    ' Output information about the counter sample.
    Private Shared Sub OutputSample(ByVal s As CounterSample)
        Console.WriteLine("+++++++++++")
        Console.WriteLine("Sample values - " + ControlChars.Cr _
              + ControlChars.Lf)
        Console.WriteLine(("   CounterType      = " + _
              s.CounterType.ToString()))
        Console.WriteLine(("   RawValue         = " + _
              s.RawValue.ToString()))
        Console.WriteLine(("   BaseValue        = " _
              + s.BaseValue.ToString()))
        Console.WriteLine(("   CounterFrequency = " + _
              s.CounterFrequency.ToString()))
        Console.WriteLine(("   CounterTimeStamp = " + _
              s.CounterTimeStamp.ToString()))
        Console.WriteLine(("   SystemFrequency  = " + _
              s.SystemFrequency.ToString()))
        Console.WriteLine(("   TimeStamp        = " + _
              s.TimeStamp.ToString()))
        Console.WriteLine(("   TimeStamp100nSec = " + _
              s.TimeStamp100nSec.ToString()))
        Console.WriteLine("++++++++++++++++++++++")
    End Sub


End Class

Tiempo Transcurrido

using System;
using System.Collections;
using System.Collections.Specialized;
using System.Diagnostics;
using System.Runtime.InteropServices;

public class App
{
    public static void Main()
    {	
        CollectSamples();
    }

    public static void CollectSamples()
    {
        const String categoryName = "ElapsedTimeSampleCategory";
        const String counterName = "ElapsedTimeSample";

        // If the category does not exist, create the category and exit.
        // Performance counters should not be created and immediately used.
        // There is a latency time to enable the counters, they should be created
        // prior to executing the application that uses the counters.
        // Execute this sample a second time to use the category.
        if ( !PerformanceCounterCategory.Exists(categoryName) )
        {

            CounterCreationDataCollection CCDC = new CounterCreationDataCollection();

            // Add the counter.
            CounterCreationData ETimeData = new CounterCreationData();
            ETimeData.CounterType = PerformanceCounterType.ElapsedTime;
            ETimeData.CounterName = counterName;
            CCDC.Add(ETimeData);	
        
            // Create the category.
            PerformanceCounterCategory.Create(categoryName,
                    "Demonstrates ElapsedTime performance counter usage.",
                PerformanceCounterCategoryType.SingleInstance, CCDC);
            // Return, rerun the application to make use of the new counters.
            return;
        }
        else
        {
            Console.WriteLine("Category exists - {0}", categoryName);
        }

        // Create the performance counter.
        PerformanceCounter PC = new PerformanceCounter(categoryName,
                                                       counterName,
                                                       false);
        // Initialize the counter.
        PC.RawValue = Stopwatch.GetTimestamp();

        DateTime Start = DateTime.Now;

        // Loop for the samples.
        for (int j = 0; j < 100; j++)
        {
            // Output the values.
            if ((j % 10) == 9)
            {
                Console.WriteLine("NextValue() = " + PC.NextValue().ToString());
                Console.WriteLine("Actual elapsed time = " + DateTime.Now.Subtract(Start).ToString());
                OutputSample(PC.NextSample());
            }

            // Reset the counter on every 20th iteration.
            if (j % 20 == 0)
            {
                PC.RawValue = Stopwatch.GetTimestamp();
                Start = DateTime.Now;
            }
            System.Threading.Thread.Sleep(50);
        }

        Console.WriteLine("Elapsed time = " + DateTime.Now.Subtract(Start).ToString());
    }

    private static void OutputSample(CounterSample s)
    {
        Console.WriteLine("\r\n+++++++++++");
        Console.WriteLine("Sample values - \r\n");
        Console.WriteLine("   BaseValue        = " + s.BaseValue);
        Console.WriteLine("   CounterFrequency = " + s.CounterFrequency);
        Console.WriteLine("   CounterTimeStamp = " + s.CounterTimeStamp);
        Console.WriteLine("   CounterType      = " + s.CounterType);
        Console.WriteLine("   RawValue         = " + s.RawValue);
        Console.WriteLine("   SystemFrequency  = " + s.SystemFrequency);
        Console.WriteLine("   TimeStamp        = " + s.TimeStamp);
        Console.WriteLine("   TimeStamp100nSec = " + s.TimeStamp100nSec);
        Console.WriteLine("++++++++++++++++++++++");
    }
}

Imports System.Collections
Imports System.Collections.Specialized
Imports System.Diagnostics
Imports System.Runtime.InteropServices
Imports System.Runtime.Versioning

<SupportedOSPlatform("Windows")>
Public Class App2

    Public Shared Sub Main()
        CollectSamples()
    End Sub

    Private Shared Sub CollectSamples()

        Dim categoryName As String = "ElapsedTimeSampleCategory"
        Dim counterName As String = "ElapsedTimeSample"

        If Not PerformanceCounterCategory.Exists(categoryName) Then

            Dim CCDC As New CounterCreationDataCollection()

            ' Add the counter.
            Dim ETimeData As New CounterCreationData()
            ETimeData.CounterType = PerformanceCounterType.ElapsedTime
            ETimeData.CounterName = counterName
            CCDC.Add(ETimeData)

            ' Create the category.
            PerformanceCounterCategory.Create(categoryName,
               "Demonstrates ElapsedTime performance counter usage.",
                   PerformanceCounterCategoryType.SingleInstance, CCDC)

        Else
            Console.WriteLine("Category exists - {0}", categoryName)
        End If

        ' Create the counter.
        Dim PC As PerformanceCounter
        PC = New PerformanceCounter(categoryName, counterName, False)

        ' Initialize the counter.
        PC.RawValue = Stopwatch.GetTimestamp()

        Dim Start As DateTime = DateTime.Now

        ' Loop for the samples.
        Dim j As Integer
        For j = 0 To 99
            ' Output the values.
            If j Mod 10 = 9 Then
                Console.WriteLine(("NextValue() = " _
                    + PC.NextValue().ToString()))
                Console.WriteLine(("Actual elapsed time = " _
                    + DateTime.Now.Subtract(Start).ToString()))
                OutputSample(PC.NextSample())
            End If

            ' Reset the counter every 20th iteration.
            If j Mod 20 = 0 Then
                PC.RawValue = Stopwatch.GetTimestamp()
                Start = DateTime.Now
            End If
            System.Threading.Thread.Sleep(50)
        Next j

        Console.WriteLine(("Elapsed time = " +
              DateTime.Now.Subtract(Start).ToString()))
    End Sub


    Private Shared Sub OutputSample(ByVal s As CounterSample)
        Console.WriteLine(ControlChars.Lf + ControlChars.Cr + "+++++++")

        Console.WriteLine("Sample values - " + ControlChars.Cr _
              + ControlChars.Lf)
        Console.WriteLine(("   BaseValue        = " _
              + s.BaseValue.ToString()))
        Console.WriteLine(("   CounterFrequency = " +
              s.CounterFrequency.ToString()))
        Console.WriteLine(("   CounterTimeStamp = " +
              s.CounterTimeStamp.ToString()))
        Console.WriteLine(("   CounterType      = " +
              s.CounterType.ToString()))
        Console.WriteLine(("   RawValue         = " +
              s.RawValue.ToString()))
        Console.WriteLine(("   SystemFrequency  = " +
              s.SystemFrequency.ToString()))
        Console.WriteLine(("   TimeStamp        = " +
              s.TimeStamp.ToString()))
        Console.WriteLine(("   TimeStamp100nSec = " +
              s.TimeStamp100nSec.ToString()))

        Console.WriteLine("+++++++")
    End Sub
End Class

Número de Ítems 32

using System;
using System.Collections;
using System.Collections.Specialized;
using System.Diagnostics;

public class NumberOfItems32
{
    private static PerformanceCounter PC;

    public static void Main()
    {
        ArrayList samplesList = [];

        // If the category does not exist, create the category and exit.
        // Performance counters should not be created and immediately used.
        // There is a latency time to enable the counters, they should be created
        // prior to executing the application that uses the counters.
        // Execute this sample a second time to use the category.
        if (SetupCategory())
            return;

        CreateCounters();
        CollectSamples(samplesList);
        CalculateResults(samplesList);
    }

    private static bool SetupCategory()
    {
        if ( !PerformanceCounterCategory.Exists("NumberOfItems32SampleCategory") )
        {

            CounterCreationDataCollection CCDC = new CounterCreationDataCollection();

            // Add the counter.
            CounterCreationData NOI32 = new CounterCreationData
            {
                CounterType = PerformanceCounterType.NumberOfItems32,
                CounterName = "NumberOfItems32Sample"
            };
            CCDC.Add(NOI32);

            // Create the category.
            PerformanceCounterCategory.Create("NumberOfItems32SampleCategory",
                "Demonstrates usage of the NumberOfItems32 performance counter type.",
                PerformanceCounterCategoryType.SingleInstance, CCDC);

            return(true);
        }
        else
        {
            Console.WriteLine("Category exists - NumberOfItems32SampleCategory");
            return(false);
        }
    }

    private static void CreateCounters()
    {
        // Create the counter.
        PC = new PerformanceCounter(
            "NumberOfItems32SampleCategory",
            "NumberOfItems32Sample",
            false)
        {
            RawValue = 0
        };
    }

    private static void CollectSamples(ArrayList samplesList)
    {

        Random r = new( DateTime.Now.Millisecond );

        // Loop for the samples.
        for (int j = 0; j < 100; j++)
        {

            int value = r.Next(1, 10);
            Console.Write(j + " = " + value);

            PC.IncrementBy(value);

            if ((j % 10) == 9)
            {
                OutputSample(PC.NextSample());
                samplesList.Add( PC.NextSample() );
            }
            else
            {
                Console.WriteLine();
            }

            System.Threading.Thread.Sleep(50);
        }
    }

    private static void CalculateResults(ArrayList samplesList)
    {
        for(int i = 0; i < (samplesList.Count - 1); i++)
        {
            // Output the sample.
            OutputSample( (CounterSample)samplesList[i] );
            OutputSample( (CounterSample)samplesList[i+1] );

            // Use .NET to calculate the counter value.
            Console.WriteLine(".NET computed counter value = " +
                CounterSampleCalculator.ComputeCounterValue((CounterSample)samplesList[i],
                (CounterSample)samplesList[i+1]) );

            // Calculate the counter value manually.
            Console.WriteLine("My computed counter value = " +
                MyComputeCounterValue((CounterSample)samplesList[i],
                (CounterSample)samplesList[i+1]) );
        }
    }

    //++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    //++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    private static Single MyComputeCounterValue(CounterSample s0, CounterSample s1)
    {
        Single counterValue = s1.RawValue;
        return(counterValue);
    }

    // Output information about the counter sample.
    private static void OutputSample(CounterSample s)
    {
        Console.WriteLine("\r\n+++++++++++");
        Console.WriteLine("Sample values - \r\n");
        Console.WriteLine("   BaseValue        = " + s.BaseValue);
        Console.WriteLine("   CounterFrequency = " + s.CounterFrequency);
        Console.WriteLine("   CounterTimeStamp = " + s.CounterTimeStamp);
        Console.WriteLine("   CounterType      = " + s.CounterType);
        Console.WriteLine("   RawValue         = " + s.RawValue);
        Console.WriteLine("   SystemFrequency  = " + s.SystemFrequency);
        Console.WriteLine("   TimeStamp        = " + s.TimeStamp);
        Console.WriteLine("   TimeStamp100nSec = " + s.TimeStamp100nSec);
        Console.WriteLine("++++++++++++++++++++++");
    }
}

Imports System.Collections
Imports System.Collections.Specialized
Imports System.Diagnostics
Imports System.Runtime.Versioning

<SupportedOSPlatform("Windows")>
Public Class NumberOfItems32

    Private Shared PC As PerformanceCounter

    Public Shared Sub Main()
        Dim samplesList As New ArrayList()
        'If the category does not exist, create the category and exit.
        'Performance counters should not be created and immediately used.
        'There is a latency time to enable the counters, they should be created
        'prior to executing the application that uses the counters.
        'Execute this sample a second time to use the counters.
        If Not (SetupCategory()) Then
            CreateCounters()
            CollectSamples(samplesList)
            CalculateResults(samplesList)
        End If
    End Sub

    Private Shared Function SetupCategory() As Boolean
        If Not PerformanceCounterCategory.Exists("NumberOfItems32SampleCategory") Then

            Dim CCDC As New CounterCreationDataCollection()

            ' Add the counter.
            Dim NOI32 As New CounterCreationData()
            NOI32.CounterType = PerformanceCounterType.NumberOfItems32
            NOI32.CounterName = "NumberOfItems32Sample"
            CCDC.Add(NOI32)

            ' Create the category.
            PerformanceCounterCategory.Create("NumberOfItems32SampleCategory", _
            "Demonstrates usage of the NumberOfItems32 performance counter type.", _
                      PerformanceCounterCategoryType.SingleInstance, CCDC)

            Return True
        Else
            Console.WriteLine("Category exists - NumberOfItems32SampleCategory")
            Return False
        End If
    End Function 'SetupCategory

    Private Shared Sub CreateCounters()
        ' Create the counter.
        PC = New PerformanceCounter("NumberOfItems32SampleCategory", "NumberOfItems32Sample", False)

        PC.RawValue = 0
    End Sub

    Private Shared Sub CollectSamples(ByVal samplesList As ArrayList)

        Dim r As New Random(DateTime.Now.Millisecond)

        ' Loop for the samples.
        Dim j As Integer
        For j = 0 To 99

            Dim value As Integer = r.Next(1, 10)
            Console.Write(j.ToString() + " = " + value.ToString())

            PC.IncrementBy(value)

            If j Mod 10 = 9 Then
                OutputSample(PC.NextSample())
                samplesList.Add(PC.NextSample())
            Else
                Console.WriteLine()
            End If
            System.Threading.Thread.Sleep(50)
        Next j
    End Sub

    Private Shared Sub CalculateResults(ByVal samplesList As ArrayList)
        Dim i As Integer
        For i = 0 To (samplesList.Count - 1) - 1
            ' Output the sample.
            OutputSample(CType(samplesList(i), CounterSample))
            OutputSample(CType(samplesList((i + 1)), CounterSample))

            ' Use .NET to calculate the counter value.
            Console.WriteLine(".NET computed counter value = " + CounterSampleCalculator.ComputeCounterValue(CType(samplesList(i), CounterSample), CType(samplesList((i + 1)), CounterSample)).ToString())

            ' Calculate the counter value manually.
            Console.WriteLine("My computed counter value = " + MyComputeCounterValue(CType(samplesList(i), CounterSample), CType(samplesList((i + 1)), CounterSample)).ToString())
        Next i
    End Sub

    '++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    '++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    Private Shared Function MyComputeCounterValue(ByVal s0 As CounterSample, ByVal s1 As CounterSample) As [Single]
        Dim counterValue As [Single] = s1.RawValue
        Return counterValue
    End Function 'MyComputeCounterValue

    ' Output information about the counter sample.
    Private Shared Sub OutputSample(ByVal s As CounterSample)
        Console.WriteLine(ControlChars.Lf + ControlChars.Cr + "+++++++++++")
        Console.WriteLine("Sample values - " + ControlChars.Lf + ControlChars.Cr)
        Console.WriteLine("   BaseValue        = " + s.BaseValue.ToString())
        Console.WriteLine("   CounterFrequency = " + s.CounterFrequency.ToString())
        Console.WriteLine("   CounterTimeStamp = " + s.CounterTimeStamp.ToString())
        Console.WriteLine("   CounterType      = " + s.CounterType.ToString())
        Console.WriteLine("   RawValue         = " + s.RawValue.ToString())
        Console.WriteLine("   SystemFrequency  = " + s.SystemFrequency.ToString())
        Console.WriteLine("   TimeStamp        = " + s.TimeStamp.ToString())
        Console.WriteLine("   TimeStamp100nSec = " + s.TimeStamp100nSec.ToString())
        Console.WriteLine("++++++++++++++++++++++")
    End Sub
End Class

NúmeroDeElementos64

using System;
using System.Collections;
using System.Diagnostics;
using System.Runtime.Versioning;

[SupportedOSPlatform("Windows")]
public class NumberOfItems64_1
{
    private static PerformanceCounter PC;

    public static void Main()
    {
        ArrayList samplesList = new ArrayList();

        // If the category does not exist, create the category and exit.
        // Perfomance counters should not be created and immediately used.
        // There is a latency time to enable the counters, they should be created
        // prior to executing the application that uses the counters.
        // Execute this sample a second time to use the category.
        if (SetupCategory())
            return;
        CreateCounters();
        CollectSamples(samplesList);
        CalculateResults(samplesList);
    }

    private static bool SetupCategory()
    {
        if (!PerformanceCounterCategory.Exists("NumberOfItems64SampleCategory"))
        {
            CounterCreationDataCollection CCDC = new CounterCreationDataCollection();

            // Add the counter.
            CounterCreationData NOI64 = new CounterCreationData();
            NOI64.CounterType = PerformanceCounterType.NumberOfItems64;
            NOI64.CounterName = "NumberOfItems64Sample";
            CCDC.Add(NOI64);

            // Create the category.
            PerformanceCounterCategory.Create("NumberOfItems64SampleCategory",
                "Demonstrates usage of the NumberOfItems64 performance counter type.",
                PerformanceCounterCategoryType.SingleInstance, CCDC);
            return (true);
        }
        else
        {
            Console.WriteLine("Category exists - NumberOfItems64SampleCategory");
            return (false);
        }
    }

    private static void CreateCounters()
    {
        // Create the counters.
        PC = new PerformanceCounter("NumberOfItems64SampleCategory",
            "NumberOfItems64Sample",
            false);

        PC.RawValue = 0;
    }

    private static void CollectSamples(ArrayList samplesList)
    {
        Random r = new Random(DateTime.Now.Millisecond);

        // Loop for the samples.
        for (int j = 0; j < 100; j++)
        {

            int value = r.Next(1, 10);
            Console.Write(j + " = " + value);

            PC.IncrementBy(value);

            if ((j % 10) == 9)
            {
                OutputSample(PC.NextSample());
                samplesList.Add(PC.NextSample());
            }
            else
            {
                Console.WriteLine();
            }

            System.Threading.Thread.Sleep(50);
        }
    }

    private static void CalculateResults(ArrayList samplesList)
    {
        for (int i = 0; i < (samplesList.Count - 1); i++)
        {
            // Output the sample.
            OutputSample((CounterSample)samplesList[i]);
            OutputSample((CounterSample)samplesList[i + 1]);

            // Use .NET to calculate the counter value.
            Console.WriteLine(".NET computed counter value = " +
                CounterSampleCalculator.ComputeCounterValue((CounterSample)samplesList[i],
                (CounterSample)samplesList[i + 1]));

            // Calculate the counter value manually.
            Console.WriteLine("My computed counter value = " +
                MyComputeCounterValue((CounterSample)samplesList[i],
                (CounterSample)samplesList[i + 1]));
        }
    }

    //++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    //++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    private static Single MyComputeCounterValue(CounterSample s0, CounterSample s1)
    {
        Single counterValue = s1.RawValue;
        return (counterValue);
    }

    // Output information about the counter sample.
    private static void OutputSample(CounterSample s)
    {
        Console.WriteLine("\r\n+++++++++++");
        Console.WriteLine("Sample values - \r\n");
        Console.WriteLine("   BaseValue        = " + s.BaseValue);
        Console.WriteLine("   CounterFrequency = " + s.CounterFrequency);
        Console.WriteLine("   CounterTimeStamp = " + s.CounterTimeStamp);
        Console.WriteLine("   CounterType      = " + s.CounterType);
        Console.WriteLine("   RawValue         = " + s.RawValue);
        Console.WriteLine("   SystemFrequency  = " + s.SystemFrequency);
        Console.WriteLine("   TimeStamp        = " + s.TimeStamp);
        Console.WriteLine("   TimeStamp100nSec = " + s.TimeStamp100nSec);
        Console.WriteLine("++++++++++++++++++++++");
    }
}

Imports System.Collections
Imports System.Collections.Specialized
Imports System.Diagnostics
Imports System.Runtime.Versioning

<SupportedOSPlatform("Windows")>
Public Class NumberOfItems64_1

    Private Shared PC As PerformanceCounter

    Public Shared Sub Main()
        Dim samplesList As New ArrayList()

        'If the category does not exist, create the category and exit.
        'Performance counters should not be created and immediately used.
        'There is a latency time to enable the counters, they should be created
        'prior to executing the application that uses the counters.
        'Execute this sample a second time to use the counters.
        If Not (SetupCategory()) Then
            CreateCounters()
            CollectSamples(samplesList)
            CalculateResults(samplesList)
        End If

    End Sub


    Private Shared Function SetupCategory() As Boolean
        If Not PerformanceCounterCategory.Exists("NumberOfItems64SampleCategory") Then

            Dim CCDC As New CounterCreationDataCollection()

            ' Add the counter.
            Dim NOI64 As New CounterCreationData()
            NOI64.CounterType = PerformanceCounterType.NumberOfItems64
            NOI64.CounterName = "NumberOfItems64Sample"
            CCDC.Add(NOI64)

            ' Create the category.
            PerformanceCounterCategory.Create("NumberOfItems64SampleCategory",
            "Demonstrates usage of the NumberOfItems64_1 performance counter type.",
                   PerformanceCounterCategoryType.SingleInstance, CCDC)

            Return True
        Else
            Console.WriteLine("Category exists - NumberOfItems64SampleCategory")
            Return False
        End If
    End Function 'SetupCategory


    Private Shared Sub CreateCounters()
        ' Create the counters.
        PC = New PerformanceCounter("NumberOfItems64SampleCategory", "NumberOfItems64Sample", False)

        PC.RawValue = 0
    End Sub


    Private Shared Sub CollectSamples(ByVal samplesList As ArrayList)

        Dim r As New Random(DateTime.Now.Millisecond)

        ' Loop for the samples.
        Dim j As Integer
        For j = 0 To 99

            Dim value As Integer = r.Next(1, 10)
            Console.Write((j.ToString() + " = " + value.ToString()))

            PC.IncrementBy(value)

            If j Mod 10 = 9 Then
                OutputSample(PC.NextSample())
                samplesList.Add(PC.NextSample())
            Else
                Console.WriteLine()
            End If
            System.Threading.Thread.Sleep(50)
        Next j
    End Sub


    Private Shared Sub CalculateResults(ByVal samplesList As ArrayList)
        Dim i As Integer
        For i = 0 To (samplesList.Count - 1) - 1
            ' Output the sample.
            OutputSample(CType(samplesList(i), CounterSample))
            OutputSample(CType(samplesList((i + 1)), CounterSample))

            ' Use .NET to calculate the counter value.
            Console.WriteLine(".NET computed counter value = " + CounterSampleCalculator.ComputeCounterValue(CType(samplesList(i), CounterSample), CType(samplesList((i + 1)), CounterSample)).ToString())

            ' Calculate the counter value manually.
            Console.WriteLine("My computed counter value = " + MyComputeCounterValue(CType(samplesList(i), CounterSample), CType(samplesList((i + 1)), CounterSample)).ToString())
        Next i
    End Sub




    '++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    '++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    Private Shared Function MyComputeCounterValue(ByVal s0 As CounterSample, ByVal s1 As CounterSample) As [Single]
        Dim counterValue As [Single] = s1.RawValue
        Return counterValue
    End Function 'MyComputeCounterValue


    ' Output information about the counter sample.
    Private Shared Sub OutputSample(ByVal s As CounterSample)
        Console.WriteLine(ControlChars.Lf + ControlChars.Cr + "+++++++++++")
        Console.WriteLine("Sample values - " + ControlChars.Lf + ControlChars.Cr)
        Console.WriteLine(("   BaseValue        = " + s.BaseValue.ToString()))
        Console.WriteLine(("   CounterFrequency = " + s.CounterFrequency.ToString()))
        Console.WriteLine(("   CounterTimeStamp = " + s.CounterTimeStamp.ToString()))
        Console.WriteLine(("   CounterType      = " + s.CounterType.ToString()))
        Console.WriteLine(("   RawValue         = " + s.RawValue.ToString()))
        Console.WriteLine(("   SystemFrequency  = " + s.SystemFrequency.ToString()))
        Console.WriteLine(("   TimeStamp        = " + s.TimeStamp.ToString()))
        Console.WriteLine(("   TimeStamp100nSec = " + s.TimeStamp100nSec.ToString()))
        Console.WriteLine("++++++++++++++++++++++")
    End Sub
End Class

SampleFraction

using System;
using System.Collections;
using System.Collections.Specialized;
using System.Diagnostics;

// Provides a SampleFraction counter to measure the percentage of the user processor
// time for this process to total processor time for the process.
public class App
{

    private static PerformanceCounter perfCounter;
    private static PerformanceCounter basePerfCounter;
    private static Process thisProcess = Process.GetCurrentProcess();

    public static void Main()
    {

        ArrayList samplesList = new ArrayList();

        // If the category does not exist, create the category and exit.
        // Performance counters should not be created and immediately used.
        // There is a latency time to enable the counters, they should be created
        // prior to executing the application that uses the counters.
        // Execute this sample a second time to use the category.
        if (SetupCategory())
            return;
        CreateCounters();
        CollectSamples(samplesList);
        CalculateResults(samplesList);
    }

    private static bool SetupCategory()
    {
        if (!PerformanceCounterCategory.Exists("SampleFractionCategory"))
        {

            CounterCreationDataCollection CCDC = new CounterCreationDataCollection();

            // Add the counter.
            CounterCreationData sampleFraction = new CounterCreationData();
            sampleFraction.CounterType = PerformanceCounterType.SampleFraction;
            sampleFraction.CounterName = "SampleFractionSample";
            CCDC.Add(sampleFraction);

            // Add the base counter.
            CounterCreationData sampleFractionBase = new CounterCreationData();
            sampleFractionBase.CounterType = PerformanceCounterType.SampleBase;
            sampleFractionBase.CounterName = "SampleFractionSampleBase";
            CCDC.Add(sampleFractionBase);

            // Create the category.
            PerformanceCounterCategory.Create("SampleFractionCategory",
                "Demonstrates usage of the SampleFraction performance counter type.",
                PerformanceCounterCategoryType.SingleInstance, CCDC);

            return (true);
        }
        else
        {
            Console.WriteLine("Category exists - SampleFractionCategory");
            return (false);
        }
    }

    private static void CreateCounters()
    {
        // Create the counters.

        perfCounter = new PerformanceCounter("SampleFractionCategory",
            "SampleFractionSample",
            false);

        basePerfCounter = new PerformanceCounter("SampleFractionCategory",
            "SampleFractionSampleBase",
            false);

        perfCounter.RawValue = thisProcess.UserProcessorTime.Ticks;
        basePerfCounter.RawValue = thisProcess.TotalProcessorTime.Ticks;
    }
    private static void CollectSamples(ArrayList samplesList)
    {

        // Loop for the samples.
        for (int j = 0; j < 100; j++)
        {

            perfCounter.IncrementBy(thisProcess.UserProcessorTime.Ticks);

            basePerfCounter.IncrementBy(thisProcess.TotalProcessorTime.Ticks);

            if ((j % 10) == 9)
            {
                OutputSample(perfCounter.NextSample());
                samplesList.Add(perfCounter.NextSample());
            }
            else
            {
                Console.WriteLine();
            }

            System.Threading.Thread.Sleep(50);
        }
    }

    private static void CalculateResults(ArrayList samplesList)
    {
        for (int i = 0; i < (samplesList.Count - 1); i++)
        {
            // Output the sample.
            OutputSample((CounterSample)samplesList[i]);
            OutputSample((CounterSample)samplesList[i + 1]);

            // Use .NET to calculate the counter value.
            Console.WriteLine(".NET computed counter value = " +
                CounterSampleCalculator.ComputeCounterValue((CounterSample)samplesList[i],
                (CounterSample)samplesList[i + 1]));

            // Calculate the counter value manually.
            Console.WriteLine("My computed counter value = " +
                MyComputeCounterValue((CounterSample)samplesList[i],
                (CounterSample)samplesList[i + 1]));
        }
    }

    //++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    // Description - This counter type provides A percentage counter that shows the
    // average ratio of user proccessor time to total processor time  during the last
    // two sample intervals.
    //++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    private static Single MyComputeCounterValue(CounterSample s0, CounterSample s1)
    {
        Single numerator = (Single)s1.RawValue - (Single)s0.RawValue;
        Single denomenator = (Single)s1.BaseValue - (Single)s0.BaseValue;
        Single counterValue = 100 * (numerator / denomenator);
        return (counterValue);
    }

    // Output information about the counter sample.
    private static void OutputSample(CounterSample s)
    {
        Console.WriteLine("\r\n+++++++++++");
        Console.WriteLine("Sample values - \r\n");
        Console.WriteLine("   BaseValue        = " + s.BaseValue);
        Console.WriteLine("   CounterFrequency = " + s.CounterFrequency);
        Console.WriteLine("   CounterTimeStamp = " + s.CounterTimeStamp);
        Console.WriteLine("   CounterType      = " + s.CounterType);
        Console.WriteLine("   RawValue         = " + s.RawValue);
        Console.WriteLine("   SystemFrequency  = " + s.SystemFrequency);
        Console.WriteLine("   TimeStamp        = " + s.TimeStamp);
        Console.WriteLine("   TimeStamp100nSec = " + s.TimeStamp100nSec);
        Console.WriteLine("++++++++++++++++++++++");
    }
}

Imports System.Collections
Imports System.Collections.Specialized
Imports System.Diagnostics
Imports System.Runtime.Versioning


' Provides a SampleFraction counter to measure the percentage of the user processor 
' time for this process to total processor time for the process.

<SupportedOSPlatform("Windows")>
Public Class App3

    Private Shared perfCounter As PerformanceCounter
    Private Shared basePerfCounter As PerformanceCounter
    Private Shared thisProcess As Process = Process.GetCurrentProcess()


    Public Shared Sub Main()

        Dim samplesList As New ArrayList()

        ' If the category does not exist, create the category and exit.
        ' Performance counters should not be created and immediately used.
        ' There is a latency time to enable the counters, they should be created
        ' prior to executing the application that uses the counters.
        ' Execute this sample a second time to use the category.
        If SetupCategory() Then
            Return
        End If
        CreateCounters()
        CollectSamples(samplesList)
        CalculateResults(samplesList)

    End Sub



    Private Shared Function SetupCategory() As Boolean
        If Not PerformanceCounterCategory.Exists("SampleFractionCategory") Then

            Dim CCDC As New CounterCreationDataCollection()

            ' Add the counter.
            Dim sampleFraction As New CounterCreationData()
            sampleFraction.CounterType = PerformanceCounterType.SampleFraction
            sampleFraction.CounterName = "SampleFractionSample"
            CCDC.Add(sampleFraction)

            ' Add the base counter.
            Dim sampleFractionBase As New CounterCreationData()
            sampleFractionBase.CounterType = PerformanceCounterType.SampleBase
            sampleFractionBase.CounterName = "SampleFractionSampleBase"
            CCDC.Add(sampleFractionBase)

            ' Create the category.
            PerformanceCounterCategory.Create("SampleFractionCategory", "Demonstrates usage of the SampleFraction performance counter type.", PerformanceCounterCategoryType.SingleInstance, CCDC)

            Return True
        Else
            Console.WriteLine("Category exists - SampleFractionCategory")
            Return False
        End If

    End Function 'SetupCategory


    Private Shared Sub CreateCounters()
        ' Create the counters.
        perfCounter = New PerformanceCounter("SampleFractionCategory", "SampleFractionSample", False)


        basePerfCounter = New PerformanceCounter("SampleFractionCategory", "SampleFractionSampleBase", False)


        perfCounter.RawValue = thisProcess.UserProcessorTime.Ticks
        basePerfCounter.RawValue = thisProcess.TotalProcessorTime.Ticks

    End Sub

    Private Shared Sub CollectSamples(ByVal samplesList As ArrayList)


        ' Loop for the samples.
        Dim j As Integer
        For j = 0 To 99

            perfCounter.IncrementBy(thisProcess.UserProcessorTime.Ticks)

            basePerfCounter.IncrementBy(thisProcess.TotalProcessorTime.Ticks)

            If j Mod 10 = 9 Then
                OutputSample(perfCounter.NextSample())
                samplesList.Add(perfCounter.NextSample())
            Else
                Console.WriteLine()
            End If
            System.Threading.Thread.Sleep(50)
        Next j

    End Sub


    Private Shared Sub CalculateResults(ByVal samplesList As ArrayList)
        Dim i As Integer
        For i = 0 To (samplesList.Count - 1)
            ' Output the sample.
            OutputSample(CType(samplesList(i), CounterSample))
            OutputSample(CType(samplesList((i + 1)), CounterSample))

            ' Use .NET to calculate the counter value.
            Console.WriteLine(".NET computed counter value = " + CounterSampleCalculator.ComputeCounterValue(CType(samplesList(i), CounterSample), CType(samplesList((i + 1)), CounterSample)))

            ' Calculate the counter value manually.
            Console.WriteLine("My computed counter value = " + MyComputeCounterValue(CType(samplesList(i), CounterSample), CType(samplesList((i + 1)), CounterSample)))
        Next i

    End Sub




    '++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    ' Description - This counter type provides A percentage counter that shows the 
    ' average ratio of user proccessor time to total processor time  during the last 
    ' two sample intervals.
    '++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    Private Shared Function MyComputeCounterValue(ByVal s0 As CounterSample, ByVal s1 As CounterSample) As [Single]
        Dim numerator As [Single] = CType(s1.RawValue, [Single]) - CType(s0.RawValue, [Single])
        Dim denomenator As [Single] = CType(s1.BaseValue, [Single]) - CType(s0.BaseValue, [Single])
        Dim counterValue As [Single] = 100 * (numerator / denomenator)
        Return counterValue

    End Function 'MyComputeCounterValue


    ' Output information about the counter sample.
    Private Shared Sub OutputSample(ByVal s As CounterSample)
        Console.WriteLine(vbCr + vbLf + "+++++++++++")
        Console.WriteLine("Sample values - " + vbCr + vbLf)
        Console.WriteLine("   BaseValue        = " + s.BaseValue)
        Console.WriteLine("   CounterFrequency = " + s.CounterFrequency)
        Console.WriteLine("   CounterTimeStamp = " + s.CounterTimeStamp)
        Console.WriteLine("   CounterType      = " + s.CounterType)
        Console.WriteLine("   RawValue         = " + s.RawValue)
        Console.WriteLine("   SystemFrequency  = " + s.SystemFrequency)
        Console.WriteLine("   TimeStamp        = " + s.TimeStamp)
        Console.WriteLine("   TimeStamp100nSec = " + s.TimeStamp100nSec)
        Console.WriteLine("++++++++++++++++++++++")

    End Sub
End Class

TasaDeCuentasPorSegundo32

using System;
using System.Collections;
using System.Diagnostics;
using System.Runtime.Versioning;

[SupportedOSPlatform("Windows")]
public class App3
{
    private static PerformanceCounter PC;

    public static void Main()
    {
        ArrayList samplesList = new ArrayList();

        // If the category does not exist, create the category and exit.
        // Perfomance counters should not be created and immediately used.
        // There is a latency time to enable the counters, they should be created
        // prior to executing the application that uses the counters.
        // Execute this sample a second time to use the category.
        if (SetupCategory())
            return;
        CreateCounters();
        CollectSamples(samplesList);
        CalculateResults(samplesList);
    }

    private static bool SetupCategory()
    {
        if (!PerformanceCounterCategory.Exists("RateOfCountsPerSecond32SampleCategory"))
        {

            CounterCreationDataCollection CCDC = new CounterCreationDataCollection();

            // Add the counter.
            CounterCreationData rateOfCounts32 = new CounterCreationData();
            rateOfCounts32.CounterType = PerformanceCounterType.RateOfCountsPerSecond32;
            rateOfCounts32.CounterName = "RateOfCountsPerSecond32Sample";
            CCDC.Add(rateOfCounts32);

            // Create the category.
            PerformanceCounterCategory.Create("RateOfCountsPerSecond32SampleCategory",
                "Demonstrates usage of the RateOfCountsPerSecond32 performance counter type.",
                PerformanceCounterCategoryType.SingleInstance, CCDC);
            return (true);
        }
        else
        {
            Console.WriteLine("Category exists - RateOfCountsPerSecond32SampleCategory");
            return (false);
        }
    }

    private static void CreateCounters()
    {
        // Create the counter.
        PC = new PerformanceCounter("RateOfCountsPerSecond32SampleCategory",
            "RateOfCountsPerSecond32Sample",
            false);

        PC.RawValue = 0;
    }

    private static void CollectSamples(ArrayList samplesList)
    {

        Random r = new Random(DateTime.Now.Millisecond);

        // Initialize the performance counter.
        PC.NextSample();

        // Loop for the samples.
        for (int j = 0; j < 100; j++)
        {

            int value = r.Next(1, 10);
            PC.IncrementBy(value);
            Console.Write(j + " = " + value);

            if ((j % 10) == 9)
            {
                Console.WriteLine(";       NextValue() = " + PC.NextValue().ToString());
                OutputSample(PC.NextSample());
                samplesList.Add(PC.NextSample());
            }
            else
            {
                Console.WriteLine();
            }

            System.Threading.Thread.Sleep(50);
        }
    }

    private static void CalculateResults(ArrayList samplesList)
    {
        for (int i = 0; i < (samplesList.Count - 1); i++)
        {
            // Output the sample.
            OutputSample((CounterSample)samplesList[i]);
            OutputSample((CounterSample)samplesList[i + 1]);

            // Use .NET to calculate the counter value.
            Console.WriteLine(".NET computed counter value = " +
                CounterSampleCalculator.ComputeCounterValue((CounterSample)samplesList[i],
                (CounterSample)samplesList[i + 1]));

            // Calculate the counter value manually.
            Console.WriteLine("My computed counter value = " +
                MyComputeCounterValue((CounterSample)samplesList[i],
                (CounterSample)samplesList[i + 1]));
        }
    }

    //++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    //	PERF_COUNTER_COUNTER
    //	Description	 - This counter type shows the average number of operations completed
    //		during each second of the sample interval. Counters of this type
    //		measure time in ticks of the system clock. The F variable represents
    //		the number of ticks per second. The value of F is factored into the
    //		equation so that the result can be displayed in seconds.
    //
    //	Generic type - Difference
    //
    //	Formula - (N1 - N0) / ( (D1 - D0) / F), where the numerator (N) represents the number
    //		of operations performed during the last sample interval, the denominator
    //		(D) represents the number of ticks elapsed during the last sample
    //		interval, and F is the frequency of the ticks.
    //
    //	     Average - (Nx - N0) / ((Dx - D0) / F)
    //
    //       Example - System\ File Read Operations/sec
    //++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    private static Single MyComputeCounterValue(CounterSample s0, CounterSample s1)
    {
        Single numerator = (Single)(s1.RawValue - s0.RawValue);
        Single denomenator = (Single)(s1.TimeStamp - s0.TimeStamp) / (Single)s1.SystemFrequency;
        Single counterValue = numerator / denomenator;
        return (counterValue);
    }

    // Output information about the counter sample.
    private static void OutputSample(CounterSample s)
    {
        Console.WriteLine("\r\n+++++++++++");
        Console.WriteLine("Sample values - \r\n");
        Console.WriteLine("   BaseValue        = " + s.BaseValue);
        Console.WriteLine("   CounterFrequency = " + s.CounterFrequency);
        Console.WriteLine("   CounterTimeStamp = " + s.CounterTimeStamp);
        Console.WriteLine("   CounterType      = " + s.CounterType);
        Console.WriteLine("   RawValue         = " + s.RawValue);
        Console.WriteLine("   SystemFrequency  = " + s.SystemFrequency);
        Console.WriteLine("   TimeStamp        = " + s.TimeStamp);
        Console.WriteLine("   TimeStamp100nSec = " + s.TimeStamp100nSec);
        Console.WriteLine("++++++++++++++++++++++");
    }
}

Imports System.Collections
Imports System.Collections.Specialized
Imports System.Diagnostics
Imports System.Runtime.Versioning

<SupportedOSPlatform("Windows")>
Public Class App4
    Private Shared PC As PerformanceCounter


    Public Shared Sub Main()
        Dim samplesList As New ArrayList()

        'If the category does not exist, create the category and exit.
        'Performance counters should not be created and immediately used.
        'There is a latency time to enable the counters, they should be created
        'prior to executing the App4lication that uses the counters.
        'Execute this sample a second time to use the counters.
        If Not (SetupCategory()) Then
            CreateCounters()
            CollectSamples(samplesList)
            CalculateResults(samplesList)
        End If
    End Sub


    Private Shared Function SetupCategory() As Boolean

        If Not PerformanceCounterCategory.Exists("RateOfCountsPerSecond32SampleCategory") Then


            Dim CCDC As New CounterCreationDataCollection()

            ' Add the counter.
            Dim rateOfCounts32 As New CounterCreationData()
            rateOfCounts32.CounterType = PerformanceCounterType.RateOfCountsPerSecond32
            rateOfCounts32.CounterName = "RateOfCountsPerSecond32Sample"
            CCDC.Add(rateOfCounts32)

            ' Create the category.
            PerformanceCounterCategory.Create("RateOfCountsPerSecond32SampleCategory", _
                "Demonstrates usage of the RateOfCountsPerSecond32 performance counter type.", _
                PerformanceCounterCategoryType.SingleInstance, CCDC)
            Return True
        Else
            Console.WriteLine("Category exists - RateOfCountsPerSecond32SampleCategory")
            Return False
        End If
    End Function 'SetupCategory


    Private Shared Sub CreateCounters()
        ' Create the counter.
        PC = New PerformanceCounter("RateOfCountsPerSecond32SampleCategory", "RateOfCountsPerSecond32Sample", False)

        PC.RawValue = 0
    End Sub


    Private Shared Sub CollectSamples(ByVal samplesList As ArrayList)

        Dim r As New Random(DateTime.Now.Millisecond)

        ' Initialize the performance counter.
        PC.NextSample()

        ' Loop for the samples.
        Dim j As Integer
        For j = 0 To 99

            Dim value As Integer = r.Next(1, 10)
            PC.IncrementBy(value)
            Console.Write((j.ToString() + " = " + value.ToString()))

            If j Mod 10 = 9 Then
                Console.WriteLine((";       NextValue() = " + PC.NextValue().ToString()))
                OutputSample(PC.NextSample())
                samplesList.Add(PC.NextSample())
            Else
                Console.WriteLine()
            End If
            System.Threading.Thread.Sleep(50)
        Next j
    End Sub


    Private Shared Sub CalculateResults(ByVal samplesList As ArrayList)
        Dim i As Integer
        For i = 0 To (samplesList.Count - 1) - 1
            ' Output the sample.
            OutputSample(CType(samplesList(i), CounterSample))
            OutputSample(CType(samplesList((i + 1)), CounterSample))


            ' Use .NET to calculate the counter value.
            Console.WriteLine(".NET computed counter value = " + CounterSampleCalculator.ComputeCounterValue(CType(samplesList(i), CounterSample), CType(samplesList((i + 1)), CounterSample)).ToString())

            ' Calculate the counter value manually.
            Console.WriteLine("My computed counter value = " + MyComputeCounterValue(CType(samplesList(i), CounterSample), CType(samplesList((i + 1)), CounterSample)).ToString())
        Next i
    End Sub





    '++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    '	PERF_COUNTER_COUNTER
    '	Description	 - This counter type shows the average number of operations completed
    '		during each second of the sample interval. Counters of this type
    '		measure time in ticks of the system clock. The F variable represents
    '		the number of ticks per second. The value of F is factored into the
    '		equation so that the result can be displayed in seconds.
    '
    '	Generic type - Difference
    '
    '	Formula - (N1 - N0) / ( (D1 - D0) / F), where the numerator (N) represents the number
    '		of operations performed during the last sample interval, the denominator
    '		(D) represents the number of ticks elapsed during the last sample
    '		interval, and F is the frequency of the ticks.
    '
    '	     Average - (Nx - N0) / ((Dx - D0) / F) 
    '
    '       Example - System\ File Read Operations/sec 
    '++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    Private Shared Function MyComputeCounterValue(ByVal s0 As CounterSample, ByVal s1 As CounterSample) As [Single]
        Dim numerator As [Single] = CType(s1.RawValue - s0.RawValue, [Single])
        Dim denomenator As [Single] = CType(s1.TimeStamp - s0.TimeStamp, [Single]) / CType(s1.SystemFrequency, [Single])
        Dim counterValue As [Single] = numerator / denomenator
        Return counterValue
    End Function 'MyComputeCounterValue


    ' Output information about the counter sample.
    Private Shared Sub OutputSample(ByVal s As CounterSample)
        Console.WriteLine(ControlChars.Lf + ControlChars.Cr + "+++++++++++")
        Console.WriteLine("Sample values - " + ControlChars.Lf + ControlChars.Cr)
        Console.WriteLine(("   BaseValue        = " + s.BaseValue.ToString()))
        Console.WriteLine(("   CounterFrequency = " + s.CounterFrequency.ToString()))
        Console.WriteLine(("   CounterTimeStamp = " + s.CounterTimeStamp.ToString()))
        Console.WriteLine(("   CounterType      = " + s.CounterType.ToString()))
        Console.WriteLine(("   RawValue         = " + s.RawValue.ToString()))
        Console.WriteLine(("   SystemFrequency  = " + s.SystemFrequency.ToString()))
        Console.WriteLine(("   TimeStamp        = " + s.TimeStamp.ToString()))
        Console.WriteLine(("   TimeStamp100nSec = " + s.TimeStamp100nSec.ToString()))
        Console.WriteLine("++++++++++++++++++++++")
    End Sub
End Class

TasaDeCuentasPorSegundo64

using System;
using System.Collections;
using System.Diagnostics;
using System.Runtime.Versioning;

[SupportedOSPlatform("Windows")]
public class App4
{
    private static PerformanceCounter PC;

    public static void Main()
    {
        ArrayList samplesList = new ArrayList();

        // If the category does not exist, create the category and exit.
        // Perfomance counters should not be created and immediately used.
        // There is a latency time to enable the counters, they should be created
        // prior to executing the application that uses the counters.
        // Execute this sample a second time to use the category.
        if (SetupCategory())
            return;
        CreateCounters();
        CollectSamples(samplesList);
        CalculateResults(samplesList);
    }

    private static bool SetupCategory()
    {

        if (!PerformanceCounterCategory.Exists("RateOfCountsPerSecond64SampleCategory"))
        {

            CounterCreationDataCollection CCDC = new CounterCreationDataCollection();

            // Add the counter.
            CounterCreationData rateOfCounts64 = new CounterCreationData();
            rateOfCounts64.CounterType = PerformanceCounterType.RateOfCountsPerSecond64;
            rateOfCounts64.CounterName = "RateOfCountsPerSecond64Sample";
            CCDC.Add(rateOfCounts64);

            // Create the category.
            PerformanceCounterCategory.Create("RateOfCountsPerSecond64SampleCategory",
                "Demonstrates usage of the RateOfCountsPerSecond64 performance counter type.",
                PerformanceCounterCategoryType.SingleInstance, CCDC);
            return (true);
        }
        else
        {
            Console.WriteLine("Category exists - RateOfCountsPerSecond64SampleCategory");
            return (false);
        }
    }

    private static void CreateCounters()
    {
        // Create the counter.
        PC = new PerformanceCounter("RateOfCountsPerSecond64SampleCategory",
            "RateOfCountsPerSecond64Sample",
            false);

        PC.RawValue = 0;
    }

    private static void CollectSamples(ArrayList samplesList)
    {

        Random r = new Random(DateTime.Now.Millisecond);

        // Initialize the performance counter.
        PC.NextSample();

        // Loop for the samples.
        for (int j = 0; j < 100; j++)
        {

            int value = r.Next(1, 10);
            PC.IncrementBy(value);
            Console.Write(j + " = " + value);

            if ((j % 10) == 9)
            {
                Console.WriteLine(";       NextValue() = " + PC.NextValue().ToString());
                OutputSample(PC.NextSample());
                samplesList.Add(PC.NextSample());
            }
            else
            {
                Console.WriteLine();
            }

            System.Threading.Thread.Sleep(50);
        }
    }

    private static void CalculateResults(ArrayList samplesList)
    {
        for (int i = 0; i < (samplesList.Count - 1); i++)
        {
            // Output the sample.
            OutputSample((CounterSample)samplesList[i]);
            OutputSample((CounterSample)samplesList[i + 1]);

            // Use .NET to calculate the counter value.
            Console.WriteLine(".NET computed counter value = " +
                CounterSampleCalculator.ComputeCounterValue((CounterSample)samplesList[i],
                (CounterSample)samplesList[i + 1]));

            // Calculate the counter value manually.
            Console.WriteLine("My computed counter value = " +
                MyComputeCounterValue((CounterSample)samplesList[i],
                (CounterSample)samplesList[i + 1]));
        }
    }

    //++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    //	PERF_COUNTER_COUNTER
    //	Description	 - This counter type shows the average number of operations completed
    //		during each second of the sample interval. Counters of this type
    //		measure time in ticks of the system clock. The F variable represents
    //		the number of ticks per second. The value of F is factored into the
    //		equation so that the result can be displayed in seconds.
    //
    //	Generic type - Difference
    //
    //	Formula - (N1 - N0) / ( (D1 - D0) / F), where the numerator (N) represents the number
    //		of operations performed during the last sample interval, the denominator
    //		(D) represents the number of ticks elapsed during the last sample
    //		interval, and F is the frequency of the ticks.
    //
    //	Average - (Nx - N0) / ((Dx - D0) / F)
    //
    //  Example - System\ File Read Operations/sec
    //++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    private static Single MyComputeCounterValue(CounterSample s0, CounterSample s1)
    {
        Single numerator = (Single)(s1.RawValue - s0.RawValue);
        Single denomenator = (Single)(s1.TimeStamp - s0.TimeStamp) / (Single)s1.SystemFrequency;
        Single counterValue = numerator / denomenator;
        return (counterValue);
    }

    private static void OutputSample(CounterSample s)
    {
        Console.WriteLine("\r\n+++++++++++");
        Console.WriteLine("Sample values - \r\n");
        Console.WriteLine("   BaseValue        = " + s.BaseValue);
        Console.WriteLine("   CounterFrequency = " + s.CounterFrequency);
        Console.WriteLine("   CounterTimeStamp = " + s.CounterTimeStamp);
        Console.WriteLine("   CounterType      = " + s.CounterType);
        Console.WriteLine("   RawValue         = " + s.RawValue);
        Console.WriteLine("   SystemFrequency  = " + s.SystemFrequency);
        Console.WriteLine("   TimeStamp        = " + s.TimeStamp);
        Console.WriteLine("   TimeStamp100nSec = " + s.TimeStamp100nSec);
        Console.WriteLine("++++++++++++++++++++++");
    }
}

Imports System.Collections
Imports System.Collections.Specialized
Imports System.Diagnostics
Imports System.Runtime.Versioning

<SupportedOSPlatform("Windows")>
Public Class App5
    Private Shared PC As PerformanceCounter


    Public Shared Sub Main()
        Dim samplesList As New ArrayList()
        'If the category does not exist, create the category and exit.
        'Performance counters should not be created and immediately used.
        'There is a latency time to enable the counters, they should be created
        'prior to executing the App5lication that uses the counters.
        'Execute this sample a second time to use the counters.
        If Not (SetupCategory()) Then
            CreateCounters()
            CollectSamples(samplesList)
            CalculateResults(samplesList)
        End If
    End Sub


    Private Shared Function SetupCategory() As Boolean


        If Not PerformanceCounterCategory.Exists("RateOfCountsPerSecond64SampleCategory") Then


            Dim CCDC As New CounterCreationDataCollection()

            ' Add the counter.
            Dim rateOfCounts64 As New CounterCreationData()
            rateOfCounts64.CounterType = PerformanceCounterType.RateOfCountsPerSecond64
            rateOfCounts64.CounterName = "RateOfCountsPerSecond64Sample"
            CCDC.Add(rateOfCounts64)

            ' Create the category.
            PerformanceCounterCategory.Create("RateOfCountsPerSecond64SampleCategory", _
            "Demonstrates usage of the RateOfCountsPerSecond64 performance counter type.", _
                PerformanceCounterCategoryType.SingleInstance, CCDC)
            Return True
        Else
            Console.WriteLine("Category exists - RateOfCountsPerSecond64SampleCategory")
            Return False
        End If
    End Function 'SetupCategory


    Private Shared Sub CreateCounters()
        ' Create the counter.
        PC = New PerformanceCounter("RateOfCountsPerSecond64SampleCategory", "RateOfCountsPerSecond64Sample", False)

        PC.RawValue = 0
    End Sub


    Private Shared Sub CollectSamples(ByVal samplesList As ArrayList)

        Dim r As New Random(DateTime.Now.Millisecond)

        ' Initialize the performance counter.
        PC.NextSample()

        ' Loop for the samples.
        Dim j As Integer
        For j = 0 To 99

            Dim value As Integer = r.Next(1, 10)
            PC.IncrementBy(value)
            Console.Write((j.ToString() + " = " + value.ToString()))

            If j Mod 10 = 9 Then
                Console.WriteLine((";       NextValue() = " + PC.NextValue().ToString()))
                OutputSample(PC.NextSample())
                samplesList.Add(PC.NextSample())
            Else
                Console.WriteLine()
            End If
            System.Threading.Thread.Sleep(50)
        Next j
    End Sub


    Private Shared Sub CalculateResults(ByVal samplesList As ArrayList)
        Dim i As Integer
        For i = 0 To (samplesList.Count - 1) - 1
            ' Output the sample.
            OutputSample(CType(samplesList(i), CounterSample))
            OutputSample(CType(samplesList((i + 1)), CounterSample))


            ' Use .NET to calculate the counter value.
            Console.WriteLine(".NET computed counter value = " + _
            CounterSampleCalculator.ComputeCounterValue(CType(samplesList(i), CounterSample), CType(samplesList((i + 1)), CounterSample)).ToString())

            ' Calculate the counter value manually.
            Console.WriteLine("My computed counter value = " + _
            MyComputeCounterValue(CType(samplesList(i), CounterSample), CType(samplesList((i + 1)), CounterSample)).ToString())
        Next i
    End Sub




    '++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    '	PERF_COUNTER_COUNTER
    '	Description	 - This counter type shows the average number of operations completed
    '		during each second of the sample interval. Counters of this type
    '		measure time in ticks of the system clock. The F variable represents
    '		the number of ticks per second. The value of F is factored into the
    '		equation so that the result can be displayed in seconds.
    '
    '	Generic type - Difference
    '
    '	Formula - (N1 - N0) / ( (D1 - D0) / F), where the numerator (N) represents the number
    '		of operations performed during the last sample interval, the denominator
    '		(D) represents the number of ticks elapsed during the last sample
    '		interval, and F is the frequency of the ticks.
    '
    '	Average - (Nx - N0) / ((Dx - D0) / F) 
    '
    '  Example - System\ File Read Operations/sec 
    '++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    Private Shared Function MyComputeCounterValue(ByVal s0 As CounterSample, ByVal s1 As CounterSample) As [Single]
        Dim numerator As [Single] = CType(s1.RawValue - s0.RawValue, [Single])
        Dim denomenator As [Single] = CType(s1.TimeStamp - s0.TimeStamp, [Single]) / CType(s1.SystemFrequency, [Single])
        Dim counterValue As [Single] = numerator / denomenator
        Return counterValue
    End Function 'MyComputeCounterValue


    Private Shared Sub OutputSample(ByVal s As CounterSample)
        Console.WriteLine(ControlChars.Lf + ControlChars.Cr + "+++++++++++")
        Console.WriteLine("Sample values - " + ControlChars.Lf + ControlChars.Cr)
        Console.WriteLine(("   BaseValue        = " + s.BaseValue.ToString()))
        Console.WriteLine(("   CounterFrequency = " + s.CounterFrequency.ToString()))
        Console.WriteLine(("   CounterTimeStamp = " + s.CounterTimeStamp.ToString()))
        Console.WriteLine(("   CounterType      = " + s.CounterType.ToString()))
        Console.WriteLine(("   RawValue         = " + s.RawValue.ToString()))
        Console.WriteLine(("   SystemFrequency  = " + s.SystemFrequency.ToString()))
        Console.WriteLine(("   TimeStamp        = " + s.TimeStamp.ToString()))
        Console.WriteLine(("   TimeStamp100nSec = " + s.TimeStamp100nSec.ToString()))
        Console.WriteLine("++++++++++++++++++++++")
    End Sub
End Class

RawFraction

using System;
using System.Collections;
using System.Diagnostics;
using System.Runtime.Versioning;

[SupportedOSPlatform("Windows")]
public class App5
{
    private static PerformanceCounter PC;
    private static PerformanceCounter BPC;

    public static void Main()
    {
        ArrayList samplesList = new ArrayList();

        // If the category does not exist, create the category and exit.
        // Performance counters should not be created and immediately used.
        // There is a latency time to enable the counters, they should be created
        // prior to executing the application that uses the counters.
        // Execute this sample a second time to use the counters.
        if (SetupCategory())
            return;
        CreateCounters();
        CollectSamples(samplesList);
        CalculateResults(samplesList);
    }

    private static bool SetupCategory()
    {

        if (!PerformanceCounterCategory.Exists("RawFractionSampleCategory"))
        {

            CounterCreationDataCollection CCDC = new CounterCreationDataCollection();

            // Add the counter.
            CounterCreationData rf = new CounterCreationData();
            rf.CounterType = PerformanceCounterType.RawFraction;
            rf.CounterName = "RawFractionSample";
            CCDC.Add(rf);

            // Add the base counter.
            CounterCreationData rfBase = new CounterCreationData();
            rfBase.CounterType = PerformanceCounterType.RawBase;
            rfBase.CounterName = "RawFractionSampleBase";
            CCDC.Add(rfBase);

            // Create the category.
            PerformanceCounterCategory.Create("RawFractionSampleCategory",
                "Demonstrates usage of the RawFraction performance counter type.",
                PerformanceCounterCategoryType.SingleInstance, CCDC);

            return (true);
        }
        else
        {
            Console.WriteLine("Category exists - RawFractionSampleCategory");
            return (false);
        }
    }

    private static void CreateCounters()
    {
        // Create the counters.
        PC = new PerformanceCounter("RawFractionSampleCategory",
            "RawFractionSample",
            false);

        BPC = new PerformanceCounter("RawFractionSampleCategory",
            "RawFractionSampleBase",
            false);

        PC.RawValue = 0;
        BPC.RawValue = 0;
    }

    private static void CollectSamples(ArrayList samplesList)
    {

        Random r = new Random(DateTime.Now.Millisecond);

        // Initialize the performance counter.
        PC.NextSample();

        // Loop for the samples.
        for (int j = 0; j < 100; j++)
        {
            int value = r.Next(1, 10);
            Console.Write(j + " = " + value);

            // Increment the base every time, because the counter measures the number
            // of high hits (raw fraction value) against all the hits (base value).
            BPC.Increment();

            // Get the % of samples that are 9 or 10 out of all the samples taken.
            if (value >= 9)
                PC.Increment();

            // Copy out the next value every ten times around the loop.
            if ((j % 10) == 9)
            {
                Console.WriteLine(";       NextValue() = " + PC.NextValue().ToString());
                OutputSample(PC.NextSample());
                samplesList.Add(PC.NextSample());
            }
            else
            {
                Console.WriteLine();
            }

            System.Threading.Thread.Sleep(50);
        }
    }

    private static void CalculateResults(ArrayList samplesList)
    {
        for (int i = 0; i < samplesList.Count; i++)
        {
            // Output the sample.
            OutputSample((CounterSample)samplesList[i]);

            // Use .NET to calculate the counter value.
            Console.WriteLine(".NET computed counter value = " +
                CounterSampleCalculator.ComputeCounterValue((CounterSample)samplesList[i]));

            // Calculate the counter value manually.
            Console.WriteLine("My computed counter value = " +
                MyComputeCounterValue((CounterSample)samplesList[i]));
        }
    }

    //++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    // Formula from MSDN -
    //      Description - This counter type shows the ratio of a subset to its set as a percentage.
    //			For example, it compares the number of bytes in use on a disk to the
    //			total number of bytes on the disk. Counters of this type display the
    //			current percentage only, not an average over time.
    //
    // Generic type - Instantaneous, Percentage
    //	    Formula - (N0 / D0), where D represents a measured attribute and N represents one
    //			component of that attribute.
    //
    //		Average - SUM (N / D) /x
    //		Example - Paging File\% Usage Peak
    //++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    private static Single MyComputeCounterValue(CounterSample rfSample)
    {
        Single numerator = (Single)rfSample.RawValue;
        Single denomenator = (Single)rfSample.BaseValue;
        Single counterValue = (numerator / denomenator) * 100;
        return (counterValue);
    }

    // Output information about the counter sample.
    private static void OutputSample(CounterSample s)
    {
        Console.WriteLine("+++++++++++");
        Console.WriteLine("Sample values - \r\n");
        Console.WriteLine("   BaseValue        = " + s.BaseValue);
        Console.WriteLine("   CounterFrequency = " + s.CounterFrequency);
        Console.WriteLine("   CounterTimeStamp = " + s.CounterTimeStamp);
        Console.WriteLine("   CounterType      = " + s.CounterType);
        Console.WriteLine("   RawValue         = " + s.RawValue);
        Console.WriteLine("   SystemFrequency  = " + s.SystemFrequency);
        Console.WriteLine("   TimeStamp        = " + s.TimeStamp);
        Console.WriteLine("   TimeStamp100nSec = " + s.TimeStamp100nSec);
        Console.WriteLine("++++++++++++++++++++++");
    }
}

Imports System.Collections
Imports System.Collections.Specialized
Imports System.Diagnostics
Imports System.Runtime.Versioning

<SupportedOSPlatform("Windows")>
Public Class App6
    Private Shared PC As PerformanceCounter
    Private Shared BPC As PerformanceCounter

    Public Shared Sub Main()
        Dim samplesList As New ArrayList()

        'If the category does not exist, create the category and exit.
        'Performance counters should not be created and immediately used.
        'There is a latency time to enable the counters, they should be created
        'prior to executing the App6lication that uses the counters.
        'Execute this sample a second time to use the counters.
        If Not (SetupCategory()) Then
            CreateCounters()
            CollectSamples(samplesList)
            CalculateResults(samplesList)
        End If

    End Sub

    Private Shared Function SetupCategory() As Boolean


        If Not PerformanceCounterCategory.Exists("RawFractionSampleCategory") Then


            Dim CCDC As New CounterCreationDataCollection()

            ' Add the counter.
            Dim rf As New CounterCreationData()
            rf.CounterType = PerformanceCounterType.RawFraction
            rf.CounterName = "RawFractionSample"
            CCDC.Add(rf)

            ' Add the base counter.
            Dim rfBase As New CounterCreationData()
            rfBase.CounterType = PerformanceCounterType.RawBase
            rfBase.CounterName = "RawFractionSampleBase"
            CCDC.Add(rfBase)

            ' Create the category.
            PerformanceCounterCategory.Create("RawFractionSampleCategory",
            "Demonstrates usage of the RawFraction performance counter type.",
                PerformanceCounterCategoryType.SingleInstance, CCDC)

            Return True
        Else
            Console.WriteLine("Category exists - RawFractionSampleCategory")
            Return False
        End If
    End Function 'SetupCategory


    Private Shared Sub CreateCounters()
        ' Create the counters.
        PC = New PerformanceCounter("RawFractionSampleCategory", "RawFractionSample", False)

        BPC = New PerformanceCounter("RawFractionSampleCategory", "RawFractionSampleBase", False)

        PC.RawValue = 0
        BPC.RawValue = 0
    End Sub


    Private Shared Sub CollectSamples(ByVal samplesList As ArrayList)

        Dim r As New Random(DateTime.Now.Millisecond)

        ' Initialize the performance counter.
        PC.NextSample()

        ' Loop for the samples.
        Dim j As Integer
        For j = 0 To 99
            Dim value As Integer = r.Next(1, 10)
            Console.Write((j.ToString() + " = " + value.ToString()))

            ' Increment the base every time, because the counter measures the number 
            ' of high hits (raw fraction value) against all the hits (base value).
            BPC.Increment()

            ' Get the % of samples that are 9 or 10 out of all the samples taken.
            If value >= 9 Then
                PC.Increment()
            End If
            ' Copy out the next value every ten times around the loop.
            If j Mod 10 = 9 Then
                Console.WriteLine((";       NextValue() = " + PC.NextValue().ToString()))
                OutputSample(PC.NextSample())
                samplesList.Add(PC.NextSample())
            Else
                Console.WriteLine()
            End If
            System.Threading.Thread.Sleep(50)
        Next j
    End Sub



    Private Shared Sub CalculateResults(ByVal samplesList As ArrayList)
        Dim i As Integer
        For i = 0 To samplesList.Count - 1
            ' Output the sample.
            OutputSample(CType(samplesList(i), CounterSample))

            ' Use .NET to calculate the counter value.
            Console.WriteLine(".NET computed counter value = " + CounterSampleCalculator.ComputeCounterValue(CType(samplesList(i), CounterSample)).ToString())

            ' Calculate the counter value manually.
            Console.WriteLine("My computed counter value = " + MyComputeCounterValue(CType(samplesList(i), CounterSample)).ToString())
        Next i
    End Sub


    '++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    ' Formula from MSDN -
    '      Description - This counter type shows the ratio of a subset to its set as a percentage.
    '			For example, it compares the number of bytes in use on a disk to the
    '			total number of bytes on the disk. Counters of this type display the 
    '			current percentage only, not an average over time.
    '
    ' Generic type - Instantaneous, Percentage 
    '	    Formula - (N0 / D0), where D represents a measured attribute and N represents one
    '			component of that attribute.
    '
    '		Average - SUM (N / D) /x 
    '		Example - Paging File\% Usage Peak
    '++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
    Private Shared Function MyComputeCounterValue(ByVal rfSample As CounterSample) As [Single]
        Dim numerator As [Single] = CType(rfSample.RawValue, [Single])
        Dim denomenator As [Single] = CType(rfSample.BaseValue, [Single])
        Dim counterValue As [Single] = numerator / denomenator * 100
        Return counterValue
    End Function 'MyComputeCounterValue


    ' Output information about the counter sample.
    Private Shared Sub OutputSample(ByVal s As CounterSample)
        Console.WriteLine("+++++++++++")
        Console.WriteLine("Sample values - " + ControlChars.Lf + ControlChars.Cr)
        Console.WriteLine(("   BaseValue        = " + s.BaseValue.ToString()))
        Console.WriteLine(("   CounterFrequency = " + s.CounterFrequency.ToString()))
        Console.WriteLine(("   CounterTimeStamp = " + s.CounterTimeStamp.ToString()))
        Console.WriteLine(("   CounterType      = " + s.CounterType.ToString()))
        Console.WriteLine(("   RawValue         = " + s.RawValue.ToString()))
        Console.WriteLine(("   SystemFrequency  = " + s.SystemFrequency.ToString()))
        Console.WriteLine(("   TimeStamp        = " + s.TimeStamp.ToString()))
        Console.WriteLine(("   TimeStamp100nSec = " + s.TimeStamp100nSec.ToString()))
        Console.WriteLine("++++++++++++++++++++++")
    End Sub
End Class

Comentarios

La PerformanceCounterType enumeración especifica los tipos de contador de rendimiento que se corresponden directamente con tipos nativos.

Algunos tipos de contador representan datos sin procesar, mientras que otros representan valores calculados basados en una o más muestras de contador. Las siguientes categorías clasifican los tipos de contadores disponibles.

• Promedio: mide un valor con el tiempo y muestra el promedio de las dos últimas medidas. Un contador base que realiza un seguimiento del número de muestras implicadas está asociado a cada contador promedio.
• Diferencia: Resta la última medida de la anterior y, si la diferencia es positiva, la muestra; si es negativo, muestra un cero.
• Instantáneo: muestra la medida más reciente.
• Porcentaje: muestra los valores calculados como porcentaje.
• Frecuencia: muestra un recuento creciente de eventos a lo largo del tiempo y divide el cambio en los valores de recuento por el cambio en el tiempo para mostrar una tasa de actividad.

Al tomar muestras de los datos del contador de rendimiento, el uso de un tipo de contador que representa un promedio puede hacer que los valores de datos sin procesar resulten significativos para su aplicación. Por ejemplo, el contador NumberOfItems64 de datos sin procesar puede exponer datos que son bastante aleatorios de ejemplo a ejemplo. La fórmula para un cálculo medio de los valores que devuelve el contador sería (X 0 +X 1 +...+X n)/n, donde cada X i es una muestra de contador sin procesar.

Los contadores de tasa son similares a los contadores promedio, pero son más útiles para situaciones en las que la tasa aumenta a medida que se utiliza un recurso. Una fórmula que calcula rápidamente el promedio es ((X n -X 0)/(T n -T 0)) / frecuencia, donde cada X i es una muestra de contador y cada T i es el tiempo que se tomó la muestra correspondiente. El resultado es el uso medio por segundo.

Los contadores de varios temporizadores recopilan datos de más de una instancia de un componente, como un procesador o disco.

Los contadores inversos miden el tiempo que un componente no está activo y derivan el tiempo activo de esa medida.

Al instrumentar aplicaciones (crear y escribir contadores de rendimiento personalizados), es posible que trabaje con tipos de contadores de rendimiento que dependen de un contador base complementario que se usa en los cálculos. El contador base debe estar inmediatamente después de su contador asociado en la colección CounterCreationDataCollection que usa su aplicación. En la tabla siguiente se enumeran los tipos de contadores base con sus correspondientes tipos de contadores de rendimiento.

A continuación se muestran las fórmulas que usan algunos de los contadores que representan valores calculados:

• AverageCount64: (N1 - N0)/(B1 - B0), donde N 1 y N 0 son lecturas del contador de rendimiento, y B1 y B0 son sus valores correspondientes AverageBase . Por lo tanto, el numerador representa los números de elementos procesados durante el intervalo de muestra y el denominador representa el número de operaciones completadas durante el intervalo de muestra.

• AverageTimer32: ((N1 - N0)/F)/(B1 - B0), donde N1 y N0 son lecturas de contadores de rendimiento, B1 y B0 son sus valores correspondientes AverageBase , y F es el número de tics por segundo. El valor de F se tiene en cuenta en la ecuación para que el resultado se pueda mostrar en segundos. Por lo tanto, el numerador representa los números de tics contados durante el último intervalo de muestra, F representa la frecuencia de los tics y el denominador representa el número de operaciones completadas durante el último intervalo de muestra.

• CounterDelta32: N1 - N0, donde N1 y N0 son lecturas del contador de rendimiento.

• CounterDelta64: N1 - N0, donde N1 y N0 son lecturas del contador de rendimiento.

• CounterMultiTimer: ((N1 - N0) / (D1 - D0)) x 100 / B, donde N1 y N0 son lecturas de contadores de rendimiento, D1 y D0 son sus lecturas de tiempo correspondientes en tics del temporizador de rendimiento del sistema y la variable B denota el recuento base de los componentes supervisados (mediante un contador base de tipo CounterMultiBase). Por lo tanto, el numerador representa las partes del intervalo de muestra durante el cual los componentes supervisados estaban activos y el denominador representa el tiempo total transcurrido del intervalo de muestra.

• CounterMultiTimer100Ns: ((N1 - N0) / (D1 - D0)) x 100 / B, donde N1 y N0 son lecturas de contadores de rendimiento, D1 y D0 son sus lecturas de tiempo correspondientes en unidades de 100 nanosegundos, y la variable B denota el recuento base de los componentes supervisados (mediante un contador base de tipo CounterMultiBase). Por lo tanto, el numerador representa las partes del intervalo de muestra durante el cual los componentes supervisados estaban activos y el denominador representa el tiempo total transcurrido del intervalo de muestra.

• CounterMultiTimer100NsInverse: (B - ((N1 - N0) / (D1 - D0))) x 100, donde el denominador representa el tiempo total transcurrido del intervalo de muestra, el numerador representa el tiempo durante el intervalo cuando los componentes supervisados estaban inactivos, y B representa el número de componentes que se supervisan mediante un contador base de tipo CounterMultiBase.

• CounterMultiTimerInverse: (B- ((N1 - N0) / (D1 - D0))) x 100, donde el denominador representa el tiempo total transcurrido del intervalo de muestra, el numerador representa el tiempo durante el intervalo cuando los componentes supervisados estaban inactivos y B representa el número de componentes que se supervisan, utilizando un contador base de tipo CounterMultiBase.

• CounterTimer: (N1 - N0) / (D1 - D0), donde N1 y N0 son lecturas de contadores de rendimiento, y D1 y D0 son sus lecturas de tiempo correspondientes. Por lo tanto, el numerador representa las partes del intervalo de muestra durante el cual los componentes supervisados estaban activos y el denominador representa el tiempo total transcurrido del intervalo de muestra.

• CounterTimerInverse: (1- ((N1 - N0) / (D1 - D0))) x 100, donde el numerador representa el tiempo durante el intervalo cuando los componentes supervisados estaban inactivos y el denominador representa el tiempo total transcurrido del intervalo de muestra.

• CountPerTimeInterval32: (N1 - N0) / (D1 - D0), donde el numerador representa el número de elementos de la cola y el denominador representa el tiempo transcurrido durante el último intervalo de ejemplo.

• CountPerTimeInterval64: (N1 - N0) / (D1 - D0), donde el numerador representa el número de elementos de una cola y el denominador representa el tiempo transcurrido durante el intervalo de muestra.

• ElapsedTime: (D0 - N0) / F, donde D0 representa la hora actual, N0 representa la hora en que se inició el objeto y F representa el número de unidades de tiempo que transcurren en un segundo. El valor de F se tiene en cuenta en la ecuación para que el resultado se pueda mostrar en segundos.

• NumberOfItems32: Ninguno. No muestra un promedio, pero muestra los datos sin procesar a medida que se recopilan.

• NumberOfItems64: Ninguno. No muestra un promedio, pero muestra los datos sin procesar a medida que se recopilan.

• NumberOfItemsHEX32: Ninguno. No muestra un promedio, pero muestra los datos sin procesar a medida que se recopilan.

• NumberOfItemsHEX64: Ninguno. No muestra un promedio, pero muestra los datos sin procesar a medida que se recopilan.

• RateOfCountsPerSecond32: (N1 - N0) / ((D1 - D0) / F), donde N1 y N0 son lecturas del contador de rendimiento, D1 y D0 son sus lecturas de tiempo correspondientes, y F representa el número de tics por segundo. Por lo tanto, el numerador representa el número de operaciones realizadas durante el último intervalo de muestra, el denominador representa el número de tics transcurridos durante el último intervalo de muestra, y F es la frecuencia de los tics. El valor de F se tiene en cuenta en la ecuación para que el resultado se pueda mostrar en segundos.

• RateOfCountsPerSecond64: (N1 - N0) / ((D1 - D0) / F), donde N1 y N0 son lecturas del contador de rendimiento, D1 y D0 son sus lecturas de tiempo correspondientes, y F representa el número de tics por segundo. Por lo tanto, el numerador representa el número de operaciones realizadas durante el último intervalo de muestra, el denominador representa el número de tics transcurridos durante el último intervalo de muestra, y F es la frecuencia de los tics. El valor de F se tiene en cuenta en la ecuación para que el resultado se pueda mostrar en segundos.

• RawFraction: (N0 / D0) x 100, donde D0 representa un atributo medido (mediante un contador base de tipo RawBase) y N0 representa un componente de ese atributo.

• SampleCounter: (N1 - N0) / ((D1 - D0) / F), donde el numerador (N) representa el número de operaciones completadas, el denominador (D) representa el tiempo transcurrido en unidades de tics del temporizador de rendimiento del sistema y F representa el número de tics que transcurren en un segundo. F se tiene en cuenta en la ecuación para que el resultado se pueda mostrar en segundos.

• SampleFraction: ((N1 - N0) / (D1 - D0)) x 100, donde el numerador representa el número de operaciones correctas durante el último intervalo de ejemplo, y el denominador representa el cambio en el número de operaciones (del tipo medido) completado durante el intervalo de muestra, utilizando contadores de tipo SampleBase.

• Timer100Ns: (N1 - N0) / (D1 - D0) x 100, donde el numerador representa las partes del intervalo de muestra durante el cual los componentes supervisados estaban activos y el denominador representa el tiempo total transcurrido del intervalo de muestra.

• Timer100NsInverse: (1- ((N1 - N0) / (D1 - D0))) x 100, donde el numerador representa el tiempo durante el intervalo cuando los componentes supervisados estaban inactivos y el denominador representa el tiempo total transcurrido del intervalo de muestra.

Consulte también

• PerformanceCounter