Enumerasi System.Diagnostics.PerformanceCounterType

Nota

Artikel ini menyediakan keterangan tambahan untuk dokumentasi referensi untuk API ini.

Enumerasi PerformanceCounterType menentukan jenis penghitung kinerja yang dipetakan langsung ke tipe asli.

Beberapa jenis penghitung mewakili data mentah, sementara yang lain mewakili nilai terhitung yang didasarkan pada satu atau beberapa sampel penghitung. Kategori berikut mengklasifikasikan jenis penghitung yang tersedia.

• Rata-rata: Mengukur nilai dari waktu ke waktu dan menampilkan rata-rata dua pengukuran terakhir. Penghitung dasar yang melacak jumlah sampel yang terlibat dihubungkan dengan setiap penghitung rata-rata.
• Perbedaan: Mengurangi pengukuran terakhir dari yang sebelumnya dan, jika perbedaannya positif, menampilkannya; jika negatif, menampilkan nol.
• Seketika: Menampilkan pengukuran terbaru.
• Persentase: Menampilkan nilai terhitung sebagai persentase.
• Laju: Mengambil sampel jumlah peristiwa yang meningkat dari waktu ke waktu dan membagi perubahan nilai hitungan dengan perubahan waktu untuk menampilkan laju aktivitas.

Saat mengambil sampel data penghitung kinerja, menggunakan jenis penghitung yang mewakili rata-rata dapat membuat nilai data mentah bermakna untuk penggunaan Anda. Misalnya, penghitung NumberOfItems64 data mentah dapat mengekspos data yang cukup acak dari sampel ke sampel. Rumus untuk perhitungan rata-rata nilai yang dikembalikan penghitung (X 0 +X 1 +...+X n)/n, di mana setiap X i adalah sampel penghitung mentah.

Penghitung laju mirip dengan penghitung rata-rata, tetapi lebih berguna dalam situasi di mana tingkat penggunaan meningkat saat sumber daya digunakan. Rumus yang dengan cepat menghitung rata-rata adalah ((X n -X 0)/(T n -T 0)) / frekuensi, di mana setiap X i adalah sampel penghitung dan setiap T i adalah waktu sampel yang sesuai diambil. Hasilnya adalah penggunaan rata-rata per detik.

Penghitung multitimer mengumpulkan data dari lebih dari satu instans komponen, seperti prosesor atau disk.

Penghitung terbalik mengukur waktu komponen tidak aktif dan memperoleh waktu aktif dari pengukuran tersebut.

Nota

Kecuali dinyatakan lain, basis waktu adalah detik.

Saat melengkapi aplikasi (membuat dan menulis penghitung kinerja kustom), Anda mungkin bekerja dengan jenis penghitung kinerja yang bergantung pada penghitung dasar yang menyertainya untuk digunakan dalam perhitungan. Penghitung dasar harus ditempatkan segera setelah penghitung terkait dalam koleksi yang digunakan oleh aplikasi Anda CounterCreationDataCollection. Tabel berikut mencantumkan jenis penghitung dasar dengan jenis penghitung kinerja yang sesuai.

Jenis penghitung dasar	Jenis penghitung kinerja
AverageBase	AverageTimer32 AverageCount64
RawBase	RawFraction
CounterMultiBase	CounterMultiTimer CounterMultiTimerInverse CounterMultiTimer100Ns CounterMultiTimer100NsInverse
SampleBase	SampleFraction

Berikut ini adalah rumus yang digunakan oleh beberapa penghitung yang mewakili nilai terhitung:

• AverageCount64: (N1 - N0)/(B1 - B0), di mana N 1 dan N 0 adalah pembacaan penghitung kinerja, dan B1 dan B0 adalah nilai yang AverageBase sesuai. Dengan demikian, pembilang mewakili jumlah item yang diproses selama interval sampel, dan penyebut mewakili jumlah operasi yang diselesaikan selama interval sampel.

• AverageTimer32: ((N1 - N0)/F)/(B1 - B0), di mana N1 dan N0 adalah pembacaan penghitung kinerja, B1 dan B0 adalah nilai yang sesuai AverageBase , dan F adalah jumlah tanda centang per detik. Nilai F diperhitungkan ke dalam persamaan sehingga hasilnya dapat ditampilkan dalam hitungan detik. Dengan demikian, pembilang mewakili jumlah detikan yang dihitung selama interval sampel terakhir, F mewakili frekuensi detik, dan bilangan pembagi mewakili jumlah operasi yang diselesaikan selama interval sampel terakhir.

• CounterDelta32: N1 - N0, di mana N1 dan N0 adalah hasil pembacaan penghitung kinerja.

• CounterDelta64: N1 - N0, di mana N1 dan N0 adalah hasil pembacaan penghitung kinerja.

• CounterMultiTimer: ((N1 - N0) / (D1 - D0)) x 100 / B, di mana N1 dan N0 adalah pembacaan penghitung kinerja, D1 dan D0 adalah pembacaan waktu yang sesuai dalam tanda centang timer performa sistem, dan variabel B menunjukkan jumlah dasar untuk komponen yang dipantau (menggunakan penghitung dasar jenis CounterMultiBase). Dengan demikian, pembilang mewakili bagian interval sampel di mana komponen yang dipantau aktif, dan denominator mewakili total waktu yang berlalu dari interval sampel.

• CounterMultiTimer100Ns: ((N1 - N0) / (D1 - D0)) x 100 / B, di mana N1 dan N0 adalah pembacaan penghitung kinerja, D1 dan D0 adalah pembacaan waktu yang sesuai dalam unit 100 nanodetik, dan variabel B menunjukkan jumlah dasar untuk komponen yang dipantau (menggunakan penghitung dasar jenis CounterMultiBase). Dengan demikian, pembilang mewakili bagian interval sampel di mana komponen yang dipantau aktif, dan denominator mewakili total waktu yang berlalu dari interval sampel.

• CounterMultiTimer100NsInverse: (B - ((N1 - N0) / (D1 - D0))) x 100, di mana denominator mewakili total waktu yang berlalu dari interval sampel, pembilang mewakili waktu selama interval ketika komponen yang dipantau tidak aktif, dan B mewakili jumlah komponen yang dipantau, menggunakan penghitung dasar jenis CounterMultiBase.

• CounterMultiTimerInverse: (B- ((N1 - N0) / (D1 - D0))) x 100, di mana denominator mewakili total waktu yang berlalu dari interval sampel, pembilang mewakili waktu selama interval ketika komponen yang dipantau tidak aktif, dan B mewakili jumlah komponen yang dipantau, menggunakan penghitung dasar jenis CounterMultiBase.

• CounterTimer: (N1 - N0) / (D1 - D0), di mana N1 dan N0 adalah pembacaan penghitung kinerja, dan D1 dan D0 adalah pembacaan waktu yang sesuai. Dengan demikian, pembilang mewakili bagian interval sampel di mana komponen yang dipantau aktif, dan denominator mewakili total waktu yang berlalu dari interval sampel.

• CounterTimerInverse: (1- ((N1 - N0) / (D1 - D0))) x 100, di mana pembilang mewakili waktu selama interval ketika komponen yang dipantau tidak aktif, dan penyebut mewakili total waktu yang berlalu dari interval sampel.

• CountPerTimeInterval32: (N1 - N0) / (D1 - D0), di mana pembilang mewakili jumlah item dalam antrean, dan denominator mewakili waktu yang berlalu selama interval sampel terakhir.

• CountPerTimeInterval64: (N1 - N0) / (D1 - D0), di mana pembilang mewakili jumlah item dalam antrean dan denominator mewakili waktu yang berlalu selama interval sampel.

• ElapsedTime: (D0 - N0) / F, di mana D0 mewakili waktu saat ini, N0 mewakili waktu objek dimulai, dan F mewakili jumlah unit waktu yang berlalu dalam satu detik. Nilai F diperhitungkan ke dalam persamaan sehingga hasilnya dapat ditampilkan dalam hitungan detik.

• NumberOfItems32: Tidak ada. Tidak menampilkan rata-rata, tetapi menunjukkan data mentah saat dikumpulkan.

• NumberOfItems64: Tidak ada. Tidak menampilkan rata-rata, tetapi menunjukkan data mentah saat dikumpulkan.

• NumberOfItemsHEX32: Tidak ada. Tidak menampilkan rata-rata, tetapi menunjukkan data mentah saat dikumpulkan.

• NumberOfItemsHEX64: Tidak ada. Tidak menampilkan rata-rata, tetapi menunjukkan data mentah saat dikumpulkan

• RateOfCountsPerSecond32: (N1 - N0) / ((D1 - D0) / F), di mana N1 dan N0 adalah pembacaan penghitung kinerja, D1 dan D0 adalah pembacaan waktu yang bersesuaian, dan F mewakili jumlah siklus per detik. Dengan demikian, pembilang mewakili jumlah operasi yang dilakukan selama interval sampel terakhir, penyebut mewakili jumlah detik yang berlalu selama interval sampel terakhir, dan F adalah frekuensi detik tersebut. Nilai F diperhitungkan ke dalam persamaan sehingga hasilnya dapat ditampilkan dalam hitungan detik.

• RateOfCountsPerSecond64: (N1 - N0) / ((D1 - D0) / F), di mana N1 dan N0 adalah pembacaan penghitung kinerja, D1 dan D0 adalah pembacaan waktu yang bersesuaian, dan F mewakili jumlah siklus per detik. Dengan demikian, pembilang mewakili jumlah operasi yang dilakukan selama interval sampel terakhir, penyebut mewakili jumlah detik yang berlalu selama interval sampel terakhir, dan F adalah frekuensi detik tersebut. Nilai F diperhitungkan ke dalam persamaan sehingga hasilnya dapat ditampilkan dalam hitungan detik.

• RawFraction: (N0 /D0) x 100, di mana D0 mewakili atribut terukur (menggunakan penghitung dasar jenis RawBase) dan N0 mewakili satu komponen atribut tersebut.

• SampleCounter: (N1 - N0) / ((D1 - D0) / F), di mana pembilang (N) mewakili jumlah operasi yang selesai, penyebut (D) mewakili waktu yang berlalu dalam satuan langkah dari pengatur waktu kinerja sistem, dan F mewakili jumlah langkah yang berlalu dalam satu detik. F diperhitungkan ke dalam persamaan sehingga hasilnya dapat ditampilkan dalam hitung detik.

• SampleFraction: ((N1 - N0) / (D1 - D0)) x 100, di mana pembilang mewakili jumlah operasi yang berhasil selama interval sampel terakhir, dan penyebut mewakili perubahan jumlah semua operasi (dari jenis yang diukur) yang diselesaikan selama interval sampel, menggunakan penghitung jenis SampleBase.

• Timer100Ns: (N1 - N0) / (D1 - D0) x 100, di mana pembilang mewakili bagian dari interval sampel di mana komponen yang dipantau aktif, dan denominator mewakili total waktu yang berlalu dari interval sampel.

• Timer100NsInverse: (1- ((N1 - N0) / (D1 - D0))) x 100, di mana pembilang mewakili waktu selama interval ketika komponen yang dipantau tidak aktif, dan penyebut mewakili total waktu yang berlalu dari interval sampel.

Contoh

Contoh berikut menunjukkan beberapa jenis penghitung dalam PerformanceCounterType enumerasi.

AverageCount64

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

[SupportedOSPlatform("Windows")]
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

Waktu yang Telah Berlalu

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

[SupportedOSPlatform("Windows")]
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 - {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

JumlahItem32

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

public class NumberOfItems64
{

    private static PerformanceCounter PC;

    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("NumberOfItems32SampleCategory") )
        {

            CounterCreationDataCollection CCDC = new CounterCreationDataCollection();

            // Add the counter.
            CounterCreationData NOI64 = new CounterCreationData();
            NOI64.CounterType = PerformanceCounterType.NumberOfItems64;
            NOI64.CounterName = "NumberOfItems32Sample";
            CCDC.Add(NOI64);

            // 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);

        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

    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 NOI64 As New CounterCreationData()
            NOI64.CounterType = PerformanceCounterType.NumberOfItems64
            NOI64.CounterName = "NumberOfItems32Sample"
            CCDC.Add(NOI64)

            ' 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

JumlahBarang64

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

Tingkat Perhitungan Per Detik32

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

LajuPerhitunganPerDetik64

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