System.Diagnostics.PerformanceCounterType sabit listesi
Bu makale, bu API'nin başvuru belgelerine ek açıklamalar sağlar.
Numaralandırma, PerformanceCounterType doğrudan yerel türlerle eşleyen performans sayacı türlerini belirtir.
Bazı sayaç türleri ham verileri, diğerleri ise bir veya daha fazla sayaç örneğini temel alan hesaplanan değerleri temsil eder. Aşağıdaki kategoriler kullanılabilir sayaç türlerini sınıflandırır.
- Ortalama: Zaman içindeki bir değeri ölçer ve son iki ölçümün ortalamasını görüntüler. Söz konusu örnek sayısını izleyen bir temel sayaç, her ortalama sayaçla ilişkilendirilir.
- Fark: Son ölçümü bir öncekinden çıkarır ve fark pozitifse onu görüntüler; negatifse sıfır görüntüler.
- Anlık: En son ölçümü görüntüler.
- Yüzde: Hesaplanan değerleri yüzde olarak görüntüler.
- Oran: Zaman içinde artan olay sayısını örnekler ve etkinlik oranını görüntülemek için sayı değerlerindeki değişikliği zaman içindeki değişikliğe böler.
Performans sayacı verilerini örnekleme sırasında, bir ortalamayı temsil eden bir sayaç türü kullanmak ham veri değerlerini kullanımınız için anlamlı hale getirebilir. Örneğin ham veri sayacı NumberOfItems64 , örnekten örneğe oldukça rastgele olan verileri kullanıma açabilir. Sayacın döndürdüğü değerlerin ortalama hesaplaması için formül (X 0 +X 1 +...+X n)/n olur ve burada her X i ham sayaç örneğidir.
Hız sayaçları ortalama sayaçlara benzer, ancak kaynak kullanıldıkçe oranın arttığı durumlar için daha kullanışlıdır. Ortalamayı hızlı bir şekilde hesaplayan formül((X n -X 0)/(T n -T 0)) / sıklıktır; burada her X i bir sayaç örneğidir ve her T i ilgili örneğin alındığı zamandır. Sonuç, saniye başına ortalama kullanımdır.
Çok iyileştirici sayaçlar , bir bileşenin işlemci veya disk gibi birden fazla örneğinden veri toplar.
Ters sayaçlar , bir bileşenin etkin olmadığı süreyi ölçer ve bu ölçümden etkin zamanı türetir.
Not
Aksi belirtilmediği sürece, zaman tabanı saniyedir.
Uygulamaları izleme (özel performans sayaçları oluşturma ve yazma), hesaplamalarda kullanılan eşlik eden bir temel sayacı kullanan performans sayacı türleriyle çalışıyor olabilirsiniz. Temel sayaç, uygulamanızın kullandığı koleksiyonda ilişkili sayacından CounterCreationDataCollection hemen sonra olmalıdır. Aşağıdaki tabloda temel sayaç türleri ilgili performans sayacı türleriyle listelenmiştir.
| Temel sayaç türü | Performans sayacı türleri |
|---|---|
AverageBase |
AverageTimer32AverageCount64 |
RawBase |
RawFraction |
CounterMultiBase |
CounterMultiTimerCounterMultiTimerInverseCounterMultiTimer100NsCounterMultiTimer100NsInverse |
SampleBase |
SampleFraction |
Hesaplanmış değerleri temsil eden sayaçlardan bazıları tarafından kullanılan formüller aşağıdadır:
AverageCount64: (N1 - N0)/(B1 - B0), burada N 1 ve N 0 performans sayacı okumalarıdır ve B1 ve B0 karşılık gelenAverageBasedeğerlerdir. Bu nedenle payda, örnek aralıkta işlenen öğe sayısını, payda ise örnek aralık boyunca tamamlanan işlem sayısını temsil eder.AverageTimer32: ((N1 - N0)/F)/(B1 - B0), burada N1 ve N0 performans sayacı okumalarıdır, B1 ve B0 karşılık gelenAverageBasedeğerlerdir ve F saniyedeki değer sayısıdır. Sonucun saniyeler içinde görüntülenebilmesi için F değeri denkleme katsayılanır. Bu nedenle, payda son örnek aralığı boyunca sayılan değer işaretlerinin sayısını, F değer işaretlerinin sıklığını ve payda da son örnek aralığında tamamlanan işlem sayısını temsil eder.CounterDelta32: N1 - N0, burada N1 ve N0 performans sayacı okumalarıdır.CounterDelta64: N1 - N0, burada N1 ve N0 performans sayacı okumalarıdır.CounterMultiTimer: ((N1 - N0) / (D1 - D0)) x 100 / B; burada N1 ve N0 performans sayacı okumalarıdır, D1 ve D0, sistem performans zamanlayıcısının değer değerlerinde karşılık gelen zaman okumalarıdır ve B değişkeni izlenen bileşenlerin temel sayısını belirtir (türünCounterMultiBasetemel sayacını kullanarak). Bu nedenle payda, izlenen bileşenlerin etkin olduğu örnek aralığının bölümlerini, payda ise örnek aralığının geçen toplam süresini temsil eder.CounterMultiTimer100Ns: ((N1 - N0) / (D1 - D0)) x 100 / B; burada N1 ve N0 performans sayacı okumalarıdır, D1 ve D0 ise 100 nanosaniyelik birimlerde karşılık gelen zaman okumalarıdır ve B değişkeni izlenen bileşenlerin temel sayısını belirtir (türünCounterMultiBasetemel sayacını kullanarak). Bu nedenle payda, izlenen bileşenlerin etkin olduğu örnek aralığının bölümlerini, payda ise örnek aralığının geçen toplam süresini temsil eder.CounterMultiTimer100NsInverse: (B - ((N1 - N0) / (D1 - D0))) x 100; burada payda örnek aralığın geçen toplam süresini temsil eder, payda izlenen bileşenlerin etkin olmadığı zaman aralığındaki süreyi temsil eder ve B türündeki bir temel sayacıCounterMultiBasekullanarak izlenen bileşen sayısını temsil eder.CounterMultiTimerInverse: (B- ((N1 - N0) / (D1 - D0))) x 100; burada payda örnek aralığın geçen toplam süresini temsil eder, payda izlenen bileşenlerin etkin olmadığı zaman aralığını temsil eder ve B türündeki bir temel sayacıCounterMultiBasekullanarak izlenen bileşen sayısını temsil eder.CounterTimer: (N1 - N0) / (D1 - D0), burada N1 ve N0 performans sayacı okumalarıdır ve D1 ve D0 karşılık gelen zaman okumalarıdır. Bu nedenle payda, izlenen bileşenlerin etkin olduğu örnek aralığının bölümlerini, payda ise örnek aralığının geçen toplam süresini temsil eder.CounterTimerInverse: (1- ((N1 - N0) / (D1 - D0))) x 100; burada payda izlenen bileşenlerin etkin olmadığı zaman aralığını temsil eder ve payda örnek aralığının geçen toplam süresini temsil eder.CountPerTimeInterval32: (N1 - N0) / (D1 - D0), burada payda kuyruktaki öğelerin sayısını, payda ise son örnek aralığı boyunca geçen süreyi temsil eder.CountPerTimeInterval64: (N1 - N0) / (D1 - D0), burada payda bir kuyruktaki öğelerin sayısını, payda ise örnek aralık boyunca geçen süreyi temsil eder.ElapsedTime: (D0 - N0) / F; burada D0 geçerli saati temsil eder, N0 nesnenin başlatıldığı saati, F ise bir saniye içinde geçen zaman birimi sayısını temsil eder. Sonucun saniyeler içinde görüntülenebilmesi için F değeri denkleme katsayılanır.NumberOfItems32:Hiçbiri. Bir ortalama görüntülemez, ancak ham verileri toplandığı şekilde gösterir.NumberOfItems64:Hiçbiri. Bir ortalama görüntülemez, ancak ham verileri toplandığı şekilde gösterir.NumberOfItemsHEX32:Hiçbiri. Bir ortalama görüntülemez, ancak ham verileri toplandığı şekilde gösterir.NumberOfItemsHEX64:Hiçbiri. Ortalama görüntülemez, ancak ham verileri toplandığı şekilde gösterirRateOfCountsPerSecond32: (N1 - N0) / ((D1 - D0) / F), burada N1 ve N0 performans sayacı okumalarıdır, D1 ve D0 karşılık gelen zaman okumalarıdır ve F saniyedeki değer sayısını temsil eder. Bu nedenle, payda son örnek aralığında gerçekleştirilen işlem sayısını temsil eder, payda son örnek aralığı boyunca geçen değer sayısını temsil eder ve F, kenelerin sıklığıdır. Sonucun saniyeler içinde görüntülenebilmesi için F değeri denkleme katsayılanır.RateOfCountsPerSecond64: (N1 - N0) / ((D1 - D0) / F), burada N1 ve N0 performans sayacı okumalarıdır, D1 ve D0 karşılık gelen zaman okumalarıdır ve F saniyedeki değer sayısını temsil eder. Bu nedenle, payda son örnek aralığında gerçekleştirilen işlem sayısını temsil eder, payda son örnek aralığı boyunca geçen değer sayısını temsil eder ve F, kenelerin sıklığıdır. Sonucun saniyeler içinde görüntülenebilmesi için F değeri denkleme katsayılanır.RawFraction: (N0 / D0) x 100; burada D0 ölçülen bir özniteliği temsil eder (türünRawBasetemel sayacını kullanarak) ve N0 bu özniteliğin bir bileşenini temsil eder.SampleCounter: (N1 - N0) / ((D1 - D0) / F), burada payda (N) tamamlanan işlem sayısını temsil eder, payda (D), sistem performans zamanlayıcısının kene birimlerinde geçen süreyi temsil eder ve F, bir saniye içinde geçen değer çizgilerinin sayısını temsil eder. F denkleme hesaba katıldığından, sonuç saniyeler içinde görüntülenebilir.SampleFraction: ((N1 - N0) / (D1 - D0)) x 100; burada payda, son örnek aralığındaki başarılı işlemlerin sayısını temsil eder ve payda, türündeki sayaçlarıSampleBasekullanarak örnek aralığında tamamlanan tüm işlemlerin (ölçülen türdeki) sayısındaki değişikliği temsil eder.Timer100Ns: (N1 - N0) / (D1 - D0) x 100; burada payda izlenen bileşenlerin etkin olduğu örnek aralığın bölümlerini temsil eder ve payda örnek aralığının geçen toplam süresini temsil eder.Timer100NsInverse: (1- ((N1 - N0) / (D1 - D0))) x 100; burada payda izlenen bileşenlerin etkin olmadığı zaman aralığını temsil eder ve payda örnek aralığının geçen toplam süresini temsil eder.
Örnekler
Aşağıdaki örneklerde, numaralandırmadaki sayaç türlerinden birkaçı PerformanceCounterType gösterilmektedir.
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
ElapsedTime
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 - {0}", categoryName);
}
// Create the performance counter.
PerformanceCounter PC = new PerformanceCounter(categoryName,
counterName,
false);
// Initialize the counter.
PC.RawValue = Stopwatch.GetTimestamp();
DateTime Start = DateTime.Now;
// Loop for the samples.
for (int j = 0; j < 100; j++)
{
// Output the values.
if ((j % 10) == 9)
{
Console.WriteLine("NextValue() = " + PC.NextValue().ToString());
Console.WriteLine("Actual elapsed time = " + DateTime.Now.Subtract(Start).ToString());
OutputSample(PC.NextSample());
}
// Reset the counter on every 20th iteration.
if (j % 20 == 0)
{
PC.RawValue = Stopwatch.GetTimestamp();
Start = DateTime.Now;
}
System.Threading.Thread.Sleep(50);
}
Console.WriteLine("Elapsed time = " + DateTime.Now.Subtract(Start).ToString());
}
private static void OutputSample(CounterSample s)
{
Console.WriteLine("\r\n+++++++++++");
Console.WriteLine("Sample values - \r\n");
Console.WriteLine(" BaseValue = " + s.BaseValue);
Console.WriteLine(" CounterFrequency = " + s.CounterFrequency);
Console.WriteLine(" CounterTimeStamp = " + s.CounterTimeStamp);
Console.WriteLine(" CounterType = " + s.CounterType);
Console.WriteLine(" RawValue = " + s.RawValue);
Console.WriteLine(" SystemFrequency = " + s.SystemFrequency);
Console.WriteLine(" TimeStamp = " + s.TimeStamp);
Console.WriteLine(" TimeStamp100nSec = " + s.TimeStamp100nSec);
Console.WriteLine("++++++++++++++++++++++");
}
}
Imports System.Collections
Imports System.Collections.Specialized
Imports System.Diagnostics
Imports System.Runtime.InteropServices
Imports System.Runtime.Versioning
<SupportedOSPlatform("Windows")>
Public Class App2
Public Shared Sub Main()
CollectSamples()
End Sub
Private Shared Sub CollectSamples()
Dim categoryName As String = "ElapsedTimeSampleCategory"
Dim counterName As String = "ElapsedTimeSample"
If Not PerformanceCounterCategory.Exists(categoryName) Then
Dim CCDC As New CounterCreationDataCollection()
' Add the counter.
Dim ETimeData As New CounterCreationData()
ETimeData.CounterType = PerformanceCounterType.ElapsedTime
ETimeData.CounterName = counterName
CCDC.Add(ETimeData)
' Create the category.
PerformanceCounterCategory.Create(categoryName,
"Demonstrates ElapsedTime performance counter usage.",
PerformanceCounterCategoryType.SingleInstance, CCDC)
Else
Console.WriteLine("Category exists - {0}", categoryName)
End If
' Create the counter.
Dim PC As PerformanceCounter
PC = New PerformanceCounter(categoryName, counterName, False)
' Initialize the counter.
PC.RawValue = Stopwatch.GetTimestamp()
Dim Start As DateTime = DateTime.Now
' Loop for the samples.
Dim j As Integer
For j = 0 To 99
' Output the values.
If j Mod 10 = 9 Then
Console.WriteLine(("NextValue() = " _
+ PC.NextValue().ToString()))
Console.WriteLine(("Actual elapsed time = " _
+ DateTime.Now.Subtract(Start).ToString()))
OutputSample(PC.NextSample())
End If
' Reset the counter every 20th iteration.
If j Mod 20 = 0 Then
PC.RawValue = Stopwatch.GetTimestamp()
Start = DateTime.Now
End If
System.Threading.Thread.Sleep(50)
Next j
Console.WriteLine(("Elapsed time = " +
DateTime.Now.Subtract(Start).ToString()))
End Sub
Private Shared Sub OutputSample(ByVal s As CounterSample)
Console.WriteLine(ControlChars.Lf + ControlChars.Cr + "+++++++")
Console.WriteLine("Sample values - " + ControlChars.Cr _
+ ControlChars.Lf)
Console.WriteLine((" BaseValue = " _
+ s.BaseValue.ToString()))
Console.WriteLine((" CounterFrequency = " +
s.CounterFrequency.ToString()))
Console.WriteLine((" CounterTimeStamp = " +
s.CounterTimeStamp.ToString()))
Console.WriteLine((" CounterType = " +
s.CounterType.ToString()))
Console.WriteLine((" RawValue = " +
s.RawValue.ToString()))
Console.WriteLine((" SystemFrequency = " +
s.SystemFrequency.ToString()))
Console.WriteLine((" TimeStamp = " +
s.TimeStamp.ToString()))
Console.WriteLine((" TimeStamp100nSec = " +
s.TimeStamp100nSec.ToString()))
Console.WriteLine("+++++++")
End Sub
End Class
NumberOfItems32
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
NumberOfItems64
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
RateOfCountsPerSecond32
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
RateOfCountsPerSecond64
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
Ham Kırılma
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
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