CounterSample 结构
定义存放性能计数器的原始数据的结构。
**命名空间:**System.Diagnostics
**程序集:**System（在 system.dll 中）
语法
声明
Public Structure CounterSample
用法
Dim instance As CounterSample
public struct CounterSample
public value class CounterSample
public final class CounterSample extends ValueType
JScript 支持使用结构，但不支持进行新的声明。
示例
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
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("++++++++++++++++++++++");
}
}
#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( "\r\n+++++++++++" );
Console::WriteLine( "Sample values - \r\n" );
Console::WriteLine( " BaseValue = {0}", s.BaseValue );
Console::WriteLine( " CounterFrequency = {0}", s.CounterFrequency );
Console::WriteLine( " CounterTimeStamp = {0}", s.CounterTimeStamp );
Console::WriteLine( " CounterType = {0}", s.CounterType );
Console::WriteLine( " RawValue = {0}", s.RawValue );
Console::WriteLine( " SystemFrequency = {0}", s.SystemFrequency );
Console::WriteLine( " TimeStamp = {0}", s.TimeStamp );
Console::WriteLine( " TimeStamp100nSec = {0}", s.TimeStamp100nSec );
Console::WriteLine( "++++++++++++++++++++++" );
}
//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++//++++++++
// 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( "AverageCounter64SampleCategory" ) )
{
CounterCreationDataCollection^ CCDC = gcnew CounterCreationDataCollection;
// Add the counter.
CounterCreationData^ averageCount64 = gcnew CounterCreationData;
averageCount64->CounterType = PerformanceCounterType::AverageCount64;
averageCount64->CounterName = "AverageCounter64Sample";
CCDC->Add( averageCount64 );
// Add the base counter.
CounterCreationData^ averageCount64Base = gcnew 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);
}
}
void CreateCounters( PerformanceCounter^% PC, PerformanceCounter^% BPC )
{
// Create the counters.
PC = gcnew PerformanceCounter( "AverageCounter64SampleCategory","AverageCounter64Sample",false );
BPC = gcnew PerformanceCounter( "AverageCounter64SampleCategory","AverageCounter64SampleBase",false );
PC->RawValue = 0;
BPC->RawValue = 0;
}
void CollectSamples( ArrayList^ samplesList, PerformanceCounter^ PC, PerformanceCounter^ BPC )
{
Random^ r = gcnew Random( DateTime::Now.Millisecond );
// Loop for the samples.
for ( int j = 0; j < 100; j++ )
{
int value = r->Next( 1, 10 );
Console::Write( "{0} = {1}", 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 );
}
}
void CalculateResults( ArrayList^ samplesList )
{
for ( int i = 0; i < (samplesList->Count - 1); i++ )
{
// Output the sample.
OutputSample( *safe_cast<CounterSample^>(samplesList[ i ]) );
OutputSample( *safe_cast<CounterSample^>(samplesList[ i + 1 ]) );
// Use .NET to calculate the counter value.
Console::WriteLine( ".NET computed counter value = {0}", CounterSampleCalculator::ComputeCounterValue( *safe_cast<CounterSample^>(samplesList[ i ]), *safe_cast<CounterSample^>(samplesList[ i + 1 ]) ) );
// Calculate the counter value manually.
Console::WriteLine( "My computed counter value = {0}", MyComputeCounterValue( *safe_cast<CounterSample^>(samplesList[ i ]), *safe_cast<CounterSample^>(samplesList[ i + 1 ]) ) );
}
}
int main()
{
ArrayList^ samplesList = gcnew ArrayList;
PerformanceCounter^ PC;
PerformanceCounter^ BPC;
SetupCategory();
CreateCounters( PC, BPC );
CollectSamples( samplesList, PC, BPC );
CalculateResults( samplesList );
}
import System.*;
import System.Collections.*;
import System.Collections.Specialized.*;
import System.Diagnostics.*;
public class App
{
private static PerformanceCounter pc;
private static PerformanceCounter bpc;
public static void main(String[] args)
{
ArrayList samplesList = new ArrayList();
SetupCategory();
CreateCounters();
CollectSamples(samplesList);
CalculateResults(samplesList);
} //main
private static boolean SetupCategory()
{
if (!(PerformanceCounterCategory.Exists(
"AverageCounter64SampleCategory"))) {
CounterCreationDataCollection ccdc =
new CounterCreationDataCollection();
// Add the counter.
CounterCreationData averageCount64 = new CounterCreationData();
averageCount64.
set_CounterType(PerformanceCounterType.AverageCount64);
averageCount64.set_CounterName("AverageCounter64Sample");
ccdc.Add(averageCount64);
// Add the base counter.
CounterCreationData averageCount64Base = new CounterCreationData();
averageCount64Base.set_CounterType(PerformanceCounterType.
AverageBase);
averageCount64Base.set_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;
}
} //SetupCategory
private static void CreateCounters()
{
// Create the counters.
pc = new PerformanceCounter("AverageCounter64SampleCategory",
"AverageCounter64Sample", false);
bpc = new PerformanceCounter("AverageCounter64SampleCategory",
"AverageCounter64SampleBase", false);
pc.set_RawValue(0);
bpc.set_RawValue(0);
} //CreateCounters
private static void CollectSamples(ArrayList samplesList)
{
Random r = new Random(DateTime.get_Now().get_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);
}
} //CollectSamples
private static void CalculateResults(ArrayList samplesList)
{
for (int i = 0; i < samplesList.get_Count() - 1; i++) {
// Output the sample.
OutputSample((CounterSample)samplesList.get_Item(i));
OutputSample((CounterSample)samplesList.get_Item(i + 1));
// Use.NET to calculate the counter value.
Console.WriteLine(".NET computed counter value = "
+ CounterSampleCalculator.ComputeCounterValue((CounterSample)
samplesList.get_Item(i),
(CounterSample)samplesList.get_Item(i + 1)));
// Calculate the counter value manually.
Console.WriteLine("My computed counter value = "
+ MyComputeCounterValue((CounterSample)samplesList.get_Item(i),
(CounterSample)samplesList.get_Item(i + 1)));
}
} //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 static float MyComputeCounterValue(CounterSample s0,
CounterSample s1)
{
float numerator = (float)s1.get_RawValue() - (float)s0.get_RawValue();
float denomenator = (float)s1.get_BaseValue() - (float)s0.
get_BaseValue();
float counterValue = numerator / denomenator;
return counterValue;
} //MyComputeCounterValue
// 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.get_BaseValue());
Console.WriteLine(" CounterFrequency = " + s.get_CounterFrequency());
Console.WriteLine(" CounterTimeStamp = " + s.get_CounterTimeStamp());
Console.WriteLine(" CounterType = " + s.get_CounterType());
Console.WriteLine(" RawValue = " + s.get_RawValue());
Console.WriteLine(" SystemFrequency = " + s.get_SystemFrequency());
Console.WriteLine(" TimeStamp = " + s.get_TimeStamp());
Console.WriteLine(" TimeStamp100nSec = " + s.get_TimeStamp100nSec());
Console.WriteLine("++++++++++++++++++++++");
} //OutputSample
} //App
线程安全
此类型的任何公共静态（Visual Basic 中的 Shared）成员都是线程安全的，但不保证所有实例成员都是线程安全的。
平台
Windows 98、Windows 2000 SP4、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition
.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。
版本信息
.NET Framework
受以下版本支持：2.0、1.1、1.0