一、效能監控的作用

效能監控可以用於獲取關於應用程式的正常行為的一般訊息，效能監控是一個強大的工具，有助於理解系統的工作負載，觀察變化和趨勢，尤其是執行在伺服器上的應用程式

二、效能監控類（System.Diagnostics）：
PerformanceCounter類：監控計數與寫入計數。還可以使用這個類建立新的效能類別
PerformanceCounterCategory類：可以檢視所有的已有的類別，以及建立類別。可以以程式設計的方式獲得一個類別中的所有計數器
performanceCounterInstall類：用於安裝效能計數器

需要引用WindowsBase

三、建立效能類別（兩種建立方式）：

1，圖形化建立：

2，程式碼建立+操作（可以監控不同應用程式的效能計數）：

usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Linq;
usingSystem.Text;
usingSystem.Threading.Tasks;
usingSystem.Windows.Forms;
usingSystem.Windows.Threading;
usingSystem.Diagnostics;
namespacePerformanceCountTest2
{
publicpartialclassForm1:Form
{
//效能計數器的例項名稱
privateconststring_NewPerformanceCounterName="PerformanceCountTest2";
//效能計數器的型別名稱
privateconststring_PerformanceCounterCategoryName="MyZhangDi";
//效能計數器名稱
privateSortedList<string,Tuple<string,string>>_PerformanceCounterNames;
//-----效能計數器（元件）
//記錄按鈕點選的次數
privatePerformanceCounterbuttonClickCount;
//記錄按鈕每秒點選的次數
privatePerformanceCounterbuttonClickCountSec;
//存放按鈕每秒點選的次數的變數
privateintRecord_buttonClickCount=0;
//初始化效能計數器名稱
privatevoidInitialziePerformanceCounterNames()
{
_PerformanceCounterNames=newSortedList<string,Tuple<string,string>>();
_PerformanceCounterNames.Add("buttonClickCount",Tuple.Create("buttonClickCount","記錄按鈕點選的次數"));
_PerformanceCounterNames.Add("buttonClickCountSec",Tuple.Create("buttonClickCountSec","記錄按鈕每秒點選的次數"));
}
//初始化效能計數器（元件）
privatevoidInitializePerformanceCounter()
{
buttonClickCount=newPerformanceCounter
{
CategoryName=_PerformanceCounterCategoryName,//效能計數器型別名稱
CounterName=_PerformanceCounterNames["buttonClickCount"].Item1,//效能計數器名稱
MachineName=".",//本地計算機
InstanceLifetime=PerformanceCounterInstanceLifetime.Process,//生命週期
ReadOnly=false,//可寫
InstanceName=_NewPerformanceCounterName//例項名稱
};
buttonClickCountSec=newPerformanceCounter
{
CategoryName=_PerformanceCounterCategoryName,//效能計數器型別名稱
CounterName=_PerformanceCounterNames["buttonClickCountSec"].Item1,//效能計數器名稱
MachineName=".",//本地計算機
InstanceLifetime=PerformanceCounterInstanceLifetime.Process,//生命週期
ReadOnly=false,//可寫
InstanceName=_NewPerformanceCounterName//例項名稱
};
}
//註冊效能計數器
privatevoidRegisterPerformanceCounter()
{
//判斷此計數器型別名稱是否存在
if(!PerformanceCounterCategory.Exists(_PerformanceCounterCategoryName))
{
varCounterCreationDatas=newCounterCreationData[2];
CounterCreationDatas[0]=newCounterCreationData
{
CounterName=_PerformanceCounterNames["buttonClickCount"].Item1,
CounterHelp=_PerformanceCounterNames["buttonClickCount"].Item2,
CounterType=PerformanceCounterType.NumberOfItems32
};
CounterCreationDatas[1]=newCounterCreationData
{
CounterName=_PerformanceCounterNames["buttonClickCountSec"].Item1,
CounterHelp=_PerformanceCounterNames["buttonClickCountSec"].Item2,
CounterType=PerformanceCounterType.RateOfCountsPerSecond32
};
CounterCreationDataCollectioncounts=newCounterCreationDataCollection(CounterCreationDatas);
//建立型別
PerformanceCounterCategory.Create(_PerformanceCounterCategoryName,"型別描述",PerformanceCounterCategoryType.MultiInstance,counts);
}
}

publicForm1()
{
InitializeComponent();
}
privatevoidForm1_Load(objectsender,EventArgse)
{
InitialziePerformanceCounterNames();
InitializePerformanceCounter();
DispatcherTimertimer=newDispatcherTimer(TimeSpan.FromSeconds(1),
DispatcherPriority.Background,
delegate
{
//存放按鈕每秒點選的次數的變數賦值給每秒點選的次數
buttonClickCountSec.RawValue=this.Record_buttonClickCount;
//初始化值（存放按鈕每秒點選的次數的變數）
this.Record_buttonClickCount=0;
},
Dispatcher.CurrentDispatcher
);
//開啟時間計數器
timer.Start();
}
///<summary>
///註冊效能計數器
///</summary>
///<paramname="sender"></param>
///<paramname="e"></param>
privatevoidbutton1_Click(objectsender,EventArgse)
{
RegisterPerformanceCounter();
}
///<summary>
///點選測試
///</summary>
///<paramname="sender"></param>
///<paramname="e"></param>
privatevoidbutton2_Click(objectsender,EventArgse)
{
buttonClickCount.Increment();
Record_buttonClickCount++;//用於每秒點選的次數
}
}
}

3，使用效能監視器檢視

轉載於:https://blog.51cto.com/962410314/1605962