CounterSample 構造体
パフォーマンス カウンタ用の生データを保持する構造体を定義します。
この型のすべてのメンバの一覧については、CounterSample メンバ を参照してください。
System.Object
System.ValueType
System.Diagnostics.CounterSample
Public Structure CounterSample
[C#]
public struct CounterSample
[C++]
public __value struct CounterSample
[JScript] JScript では、.NET Framework の構造体を利用することができます。ただし、独自に定義することはできません。
スレッドセーフ
この型の public static (Visual Basicでは Shared) のすべてのメンバは、マルチスレッド操作で安全に使用できます。インスタンスのメンバの場合は、スレッドセーフであるとは限りません。
使用例
Imports System
Imports System.Collections
Imports System.Collections.Specialized
Imports System.Diagnostics
_
Public Class App
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 'Main
Private Shared Function SetupCategory() As Boolean
If Not PerformanceCounterCategory.Exists("AverageCounter64SampleCategory") Then
Dim CCDC As New CounterCreationDataCollection()
' Add the counter.
Dim averageCount64 As New CounterCreationData()
averageCount64.CounterType = PerformanceCounterType.AverageCount64
averageCount64.CounterName = "AverageCounter64Sample"
CCDC.Add(averageCount64)
' Add the base counter.
Dim averageCount64Base As New CounterCreationData()
averageCount64Base.CounterType = PerformanceCounterType.AverageBase
averageCount64Base.CounterName = "AverageCounter64SampleBase"
CCDC.Add(averageCount64Base)
' Create the category.
PerformanceCounterCategory.Create("AverageCounter64SampleCategory", "Demonstrates usage of the AverageCounter64 performance counter type.", CCDC)
Return True
Else
Console.WriteLine("Category exists - AverageCounter64SampleCategory")
Return False
End If
End Function 'SetupCategory
Private Shared Sub CreateCounters()
' Create the counters.
PC = New PerformanceCounter("AverageCounter64SampleCategory", "AverageCounter64Sample", False)
BPC = New PerformanceCounter("AverageCounter64SampleCategory", "AverageCounter64SampleBase", False)
PC.RawValue = 0
BPC.RawValue = 0
End Sub 'CreateCounters
Private Shared Sub CollectSamples(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 + " = " + value))
PC.IncrementBy(value)
BPC.Increment()
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 'CollectSamples
Private Shared Sub CalculateResults(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))))
' 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 'CalculateResults
'++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
' 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(s0 As CounterSample, 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(s As CounterSample)
Console.WriteLine(ControlChars.Lf + ControlChars.Cr + "+++++++++++")
Console.WriteLine("Sample values - " + ControlChars.Lf + ControlChars.Cr)
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 'OutputSample
End Class 'App
[C#]
using System;
using System.Collections;
using System.Collections.Specialized;
using System.Diagnostics;
public class App {
private static PerformanceCounter PC;
private static PerformanceCounter BPC;
public static void Main()
{
ArrayList samplesList = new ArrayList();
SetupCategory();
CreateCounters();
CollectSamples(samplesList);
CalculateResults(samplesList);
}
private static bool SetupCategory()
{
if ( !PerformanceCounterCategory.Exists("AverageCounter64SampleCategory") )
{
CounterCreationDataCollection CCDC = new CounterCreationDataCollection();
// Add the counter.
CounterCreationData averageCount64 = new CounterCreationData();
averageCount64.CounterType = PerformanceCounterType.AverageCount64;
averageCount64.CounterName = "AverageCounter64Sample";
CCDC.Add(averageCount64);
// Add the base counter.
CounterCreationData averageCount64Base = new CounterCreationData();
averageCount64Base.CounterType = PerformanceCounterType.AverageBase;
averageCount64Base.CounterName = "AverageCounter64SampleBase";
CCDC.Add(averageCount64Base);
// Create the category.
PerformanceCounterCategory.Create("AverageCounter64SampleCategory",
"Demonstrates usage of the AverageCounter64 performance counter type.",
CCDC);
return(true);
}
else
{
Console.WriteLine("Category exists - AverageCounter64SampleCategory");
return(false);
}
}
private static void CreateCounters()
{
// Create the counters.
PC = new PerformanceCounter("AverageCounter64SampleCategory",
"AverageCounter64Sample",
false);
BPC = new PerformanceCounter("AverageCounter64SampleCategory",
"AverageCounter64SampleBase",
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 j = 0; j < 100; j++)
{
int value = r.Next(1, 10);
Console.Write(j + " = " + value);
PC.IncrementBy(value);
BPC.Increment();
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]) );
}
}
//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
// 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("++++++++++++++++++++++");
}
}
[C++]
#using <mscorlib.dll>
#using <System.dll>
using namespace System;
using namespace System::Collections;
using namespace System::Collections::Specialized;
using namespace System::Diagnostics;
// Output information about the counter sample.
void OutputSample(CounterSample s) {
Console::WriteLine(S"\r\n+++++++++++");
Console::WriteLine(S"Sample values - \r\n");
Console::WriteLine(S" BaseValue = {0}", __box(s.BaseValue));
Console::WriteLine(S" CounterFrequency = {0}", __box(s.CounterFrequency));
Console::WriteLine(S" CounterTimeStamp = {0}", __box(s.CounterTimeStamp));
Console::WriteLine(S" CounterType = {0}", __box(s.CounterType));
Console::WriteLine(S" RawValue = {0}", __box(s.RawValue));
Console::WriteLine(S" SystemFrequency = {0}", __box(s.SystemFrequency));
Console::WriteLine(S" TimeStamp = {0}", __box(s.TimeStamp));
Console::WriteLine(S" TimeStamp100nSec = {0}", __box(s.TimeStamp100nSec));
Console::WriteLine(S"++++++++++++++++++++++");
}
//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
// 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
//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
float MyComputeCounterValue(CounterSample s0, CounterSample s1) {
float numerator = (float)s1.RawValue - (float)s0.RawValue;
float denomenator = (float)s1.BaseValue - (float)s0.BaseValue;
float counterValue = numerator / denomenator;
return(counterValue);
}
bool SetupCategory() {
if (!PerformanceCounterCategory::Exists(S"AverageCounter64SampleCategory")) {
CounterCreationDataCollection* CCDC = new CounterCreationDataCollection();
// Add the counter.
CounterCreationData* averageCount64 = new CounterCreationData();
averageCount64->CounterType = PerformanceCounterType::AverageCount64;
averageCount64->CounterName = S"AverageCounter64Sample";
CCDC->Add(averageCount64);
// Add the base counter.
CounterCreationData* averageCount64Base = new CounterCreationData();
averageCount64Base->CounterType = PerformanceCounterType::AverageBase;
averageCount64Base->CounterName = S"AverageCounter64SampleBase";
CCDC->Add(averageCount64Base);
// Create the category.
PerformanceCounterCategory::Create(S"AverageCounter64SampleCategory",
S"Demonstrates usage of the AverageCounter64 performance counter type.",
CCDC);
return(true);
} else {
Console::WriteLine(S"Category exists - AverageCounter64SampleCategory");
return(false);
}
}
void CreateCounters(PerformanceCounter*& PC, PerformanceCounter*& BPC) {
// Create the counters.
PC = new PerformanceCounter(S"AverageCounter64SampleCategory",
S"AverageCounter64Sample", false);
BPC = new PerformanceCounter(S"AverageCounter64SampleCategory",
S"AverageCounter64SampleBase", false);
PC->RawValue=0;
BPC->RawValue=0;
}
void CollectSamples(ArrayList* samplesList, PerformanceCounter* PC, PerformanceCounter* BPC) {
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(S"{0} = {1}", __box(j), __box(value));
PC->IncrementBy(value);
BPC->Increment();
if ((j % 10) == 9) {
OutputSample(PC->NextSample());
samplesList->Add(__box(PC->NextSample()));
} else
Console::WriteLine();
System::Threading::Thread::Sleep(50);
}
}
void CalculateResults(ArrayList* samplesList) {
for (int i = 0; i < (samplesList->Count - 1); i++) {
// Output the sample.
OutputSample(*__try_cast<__box CounterSample*>(samplesList->Item[i]));
OutputSample(*__try_cast<__box CounterSample*>(samplesList->Item[i+1]));
// Use .NET to calculate the counter value.
Console::WriteLine(S".NET computed counter value = {0}",
__box(CounterSampleCalculator::ComputeCounterValue(
*__try_cast<__box CounterSample*>(samplesList->Item[i]),
*__try_cast<__box CounterSample*>(samplesList->Item[i+1]))));
// Calculate the counter value manually.
Console::WriteLine(S"My computed counter value = {0}",
__box(MyComputeCounterValue(
*__try_cast<__box CounterSample*>(samplesList->Item[i]),
*__try_cast<__box CounterSample*>(samplesList->Item[i+1]))));
}
}
int main() {
ArrayList* samplesList = new ArrayList();
PerformanceCounter* PC;
PerformanceCounter* BPC;
SetupCategory();
CreateCounters(PC, BPC);
CollectSamples(samplesList, PC, BPC);
CalculateResults(samplesList);
}
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をクリックします。
必要条件
名前空間: System.Diagnostics
プラットフォーム: Windows NT Server 4.0, Windows NT Workstation 4.0, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ
アセンブリ: System (System.dll 内)