一、性能監控的作用

????????性能監控可以用于獲取關于應用程序的正常行為的一般消息，性能監控是一個強大的工具，有助于理解系統的工作負載，觀察變化和趨勢，尤其是運行在服務器上的應用程序

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二、性能監控類（System.Diagnostics）：
PerformanceCounter類：監控計數與寫入計數。還可以使用這個類創建新的性能類別
PerformanceCounterCategory類：可以查看所有的已有的類別，以及創建類別。可以以編程的方式獲得一個類別中的所有計數器
performanceCounterInstall類：用于安裝性能計數器

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需要引用WindowsBase

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三、創建性能類別（兩種創建方式）：

1，圖形化創建：

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2，代碼創建+操作（可以監控不同應用程序的性能計數）：

?using?System; using?System.Collections.Generic; using?System.ComponentModel; using?System.Data; using?System.Drawing; using?System.Linq; using?System.Text; using?System.Threading.Tasks; using?System.Windows.Forms; using?System.Windows.Threading; using?System.Diagnostics; namespace?PerformanceCountTest2 {public?partial?class?Form1?:?Form{//性能計數器的實例名稱private?const?string?_NewPerformanceCounterName?=?"PerformanceCountTest2";//性能計數器的類型名稱private?const?string?_PerformanceCounterCategoryName?=?"MyZhangDi";//性能計數器名稱private?SortedList<string,?Tuple<string,?string>>?_PerformanceCounterNames;//-----性能計數器（組件）//記錄按鈕點擊的次數private?PerformanceCounter?buttonClickCount;//記錄按鈕每秒點擊的次數private?PerformanceCounter?buttonClickCountSec;//存放按鈕每秒點擊的次數的變量private?int?Record_buttonClickCount?=?0;//初始化性能計數器名稱private?void?InitialziePerformanceCounterNames(){_PerformanceCounterNames?=?new?SortedList<string,?Tuple<string,?string>>();_PerformanceCounterNames.Add("buttonClickCount",?Tuple.Create("buttonClickCount",?"記錄按鈕點擊的次數"));_PerformanceCounterNames.Add("buttonClickCountSec",?Tuple.Create("buttonClickCountSec",?"記錄按鈕每秒點擊的次數"));}//初始化性能計數器（組件）private?void?InitializePerformanceCounter(){buttonClickCount?=?new?PerformanceCounter{CategoryName?=?_PerformanceCounterCategoryName,//性能計數器類型名稱CounterName?=?_PerformanceCounterNames["buttonClickCount"].Item1,//性能計數器名稱MachineName?=?".",//本地計算機InstanceLifetime?=?PerformanceCounterInstanceLifetime.Process,//生命周期ReadOnly?=?false,//可寫InstanceName?=?_NewPerformanceCounterName//實例名稱};buttonClickCountSec?=?new?PerformanceCounter{CategoryName?=?_PerformanceCounterCategoryName,//性能計數器類型名稱CounterName?=?_PerformanceCounterNames["buttonClickCountSec"].Item1,//性能計數器名稱MachineName?=?".",//本地計算機InstanceLifetime?=?PerformanceCounterInstanceLifetime.Process,//生命周期ReadOnly?=?false,//可寫InstanceName?=?_NewPerformanceCounterName//實例名稱};}//注冊性能計數器private?void?RegisterPerformanceCounter(){//判斷此計數器類型名稱是否存在if?(!PerformanceCounterCategory.Exists(_PerformanceCounterCategoryName)){var?CounterCreationDatas?=?new?CounterCreationData[2];CounterCreationDatas[0]?=?new?CounterCreationData{CounterName?=?_PerformanceCounterNames["buttonClickCount"].Item1,CounterHelp?=?_PerformanceCounterNames["buttonClickCount"].Item2,CounterType?=?PerformanceCounterType.NumberOfItems32};CounterCreationDatas[1]?=?new?CounterCreationData{CounterName?=?_PerformanceCounterNames["buttonClickCountSec"].Item1,CounterHelp?=?_PerformanceCounterNames["buttonClickCountSec"].Item2,CounterType?=?PerformanceCounterType.RateOfCountsPerSecond32};CounterCreationDataCollection?counts?=?new?CounterCreationDataCollection(CounterCreationDatas);//創建類型PerformanceCounterCategory.Create(_PerformanceCounterCategoryName,?"類型描述",?PerformanceCounterCategoryType.MultiInstance,?counts);}}public?Form1(){InitializeComponent();}private?void?Form1_Load(object?sender,?EventArgs?e){InitialziePerformanceCounterNames();InitializePerformanceCounter();DispatcherTimer?timer?=?new?DispatcherTimer(TimeSpan.FromSeconds(1),DispatcherPriority.Background,delegate{//存放按鈕每秒點擊的次數的變量?賦值給?每秒點擊的次數buttonClickCountSec.RawValue?=?this.Record_buttonClickCount;//初始化值（存放按鈕每秒點擊的次數的變量）this.Record_buttonClickCount?=?0;},Dispatcher.CurrentDispatcher);//開啟時間計數器timer.Start();}///?<summary>///?注冊性能計數器///?</summary>///?<param?name="sender"></param>///?<param?name="e"></param>private?void?button1_Click(object?sender,?EventArgs?e){RegisterPerformanceCounter();}///?<summary>///?點擊測試///?</summary>///?<param?name="sender"></param>///?<param?name="e"></param>private?void?button2_Click(object?sender,?EventArgs?e){buttonClickCount.Increment();Record_buttonClickCount++;//用于每秒點擊的次數}} }

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3，使用性能監視器查看

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

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