PerformanceCounter PerformanceCounter 是 C# 中用于访问和操作 Windows 性能计数器的类。 以下是一些关键点: 基本概念 命名空间:PerformanceCounter 类位于 System.Diagnostics 命名空间中。 作用:它允许你读取、创建和写入性能计数器。 使用步骤 引用命名空间: using System.Diagnostics; 创建 PerformanceCounter 实例: 创建计数器类别: if (! myCounter = new PerformanceCounter("MyCategory", "MyCounter", false); 读取现有计数器: PerformanceCounter cpuCounter 示例: PerformanceCounter cpuCounter = new PerformanceCounter("Processor", "% Processor Time", "_Total")
在命名空间System.Diagnostic提供了一组性能计数器类,包括PerformanceCounterCategory,PerformanceCounter,PerformanceCounterInstaller
我们可以通过添加技术器来查看其他的性能指标: 如果你说,这么看太麻烦了,OK,我们通过C#将这些值取出来,用于实现自身的性能监视: 1.添加引用: using System.Diagnostics; 2.创建并实例化PerformanceCounter public static System.Diagnostics.PerformanceCounter pc = new System.Diagnostics.PerformanceCounter (); public static System.Diagnostics.PerformanceCounter pcm = new System.Diagnostics.PerformanceCounter (); public static System.Diagnostics.PerformanceCounter pcb = new System.Diagnostics.PerformanceCounter (); public static System.Diagnostics.PerformanceCounter pcc = new System.Diagnostics.PerformanceCounter
一、傻瓜式解决办法: 删除: ((System.ComponentModel.ISupportInitialize)(this.performanceCounter1)).EndInit(); (CategoryName指的就是控件要用的名字) 二、妥善的解决办法 在Form1.Designer中添加 this.performanceCounter1.CategoryName = "Processor"; this.performanceCounter1.CounterName = "% Processor Time"; this.performanceCounter1
.NET 中提供了 PerformanceCounter 类型,可以用来监视系统中大量的性能问题。 var cpuCounter = new PerformanceCounter("Processor", "% Processor Time", "_Total"); // 创建内存占用字节数的性能计数器 var ramCounter = new PerformanceCounter("Memory", "Available MBytes"); 接下来,使用 NextValue() 可分别获取到两者的值 获取当前进程的 CPU 和内存占用 在了解的 PerformanceCounter 各个参数代表的含义之后,我们还可以获取到单个进程的性能计数。 ", "% Processor Time", name); var ramCounter = new PerformanceCounter("Process", "Working Set", name)
public static void MonitorPerformance(){ PerformanceCounter cpuCounter = new PerformanceCounter("Processor ", "% Processor Time", "_Total"); PerformanceCounter memoryCounter = new PerformanceCounter("Memory
使用示例LARGE_INTEGER PerformanceCounter, PerformanceFrequency;PerformanceCounter = KeQueryPerformanceCounter (&PerformanceFrequency);DbgPrint("Performance Counter: %I64d\n", PerformanceCounter.QuadPart);DbgPrint
代码清单1-3 // C# code static void MakeUsage(float level) { PerformanceCounter p = new PerformanceCounter
echo HRTime\PerformanceCounter::getFrequency(), PHP_EOL; // 1000000000 echo HRTime\PerformanceCounter ::getTicks(), PHP_EOL; // 3758428256236 echo HRTime\PerformanceCounter::getTicksSince(1212), PHP_EOL; // 3758428257494 $a = HRTime\PerformanceCounter::getTicks(); echo HRTime\PerformanceCounter::getTicksSince ($a), PHP_EOL; // 412 接下来的这三个函数就是 HRTime 扩展中的 PerformanceCounter 对象的静态函数了。 PerformanceCounter 对象的意思是性能计数器,getFrequency() 表示的是计时器频率(以滴答Ticks/秒为单位),可以看出,它返回的就是纳秒单位,也就是 10亿 。
获取所有进程信息 string cpu = string.Empty; string info = string.Empty; PerformanceCounter pp = new PerformanceCounter();//性能计数器 pp.CategoryName = "Process";//指定获取计算机进程信息 如果传Processor
并可以生成报告以及以各种方式查看过去的性能数据,但是有时候我们还是定义自己的一些曲线或者报表,那么就需要将性能监视器的数据收集起来,C#提供了PerformanceCounterCategory(性能对象),PerformanceCounter returns> public static float GetPerfCount(string categoryName, string counterName, string instance) { PerformanceCounter counter = new PerformanceCounter { CategoryName = categoryName, CounterName = counterName, InstanceName /// <returns></returns> public static float GetPerfCount(string categoryName, string counterName) { PerformanceCounter counter = new PerformanceCounter { CategoryName = categoryName, CounterName = counterName }; counter.NextValue
数据收集服务在启动的时候根据service_counters 表创建 System.Diagnostics.PerformanceCounter class 的实例列表。 readonly LogWriter logger = HostLogger.Get<ServiceMonitor>(); 18: private IList<Tuple<int, PerformanceCounter 66: try 67: { 68: var counters = new List<Tuple<int, PerformanceCounter "."); 75: counters.Add(new Tuple<int, PerformanceCounter>(counter.Id, perfCounter PerfmonClient.SaveServiceSnapshots(snapshots); 93: } 94: 95: private String GetPerfCounterPath(PerformanceCounter
获取CPU使用率使用了 PerformanceCounter API, 然后后台 Timer定时读取当前值, 然后计算猫的运动速度 public RunCatApplicationContext() { SystemEvents.UserPreferenceChanged += new UserPreferenceChangedEventHandler(UserPreferenceChanged); cpuUsage = new PerformanceCounter
System.IO; namespace MON.Client { public static class SysInfo { static Dictionary<string, PerformanceCounter static SysInfo() { try { dic = new Dictionary<string, PerformanceCounter { try { var pc = new PerformanceCounter
var counters = new List<Tuple<int, PerformanceCounter>>(); using (var conn = new SqlConnection counter.CounterName, counter.InstanceName); var perfCounter = new PerformanceCounter "."); counters.Add(new Tuple<int, PerformanceCounter>(counter.Id, perfCounter
GetProcessRate(string processName) { string result = String.Empty; try { PerformanceCounter pfc = new PerformanceCounter(); // 性能计数器 pfc.CategoryName = "Process";
pcmem.InstanceName=null; // richTextBox1.Text=pcpu.NextValue().ToString()+"\r\n"; /* System.Diagnostics.PerformanceCounter ="bynowtime") { _stdtime=System.DateTime.Now; } System.Diagnostics.PerformanceCounter pcm=new System.Diagnostics.PerformanceCounter("Process","% Processor Time",_pname); continue; } // richTextBox1.Text+=((System.Diagnostics.PerformanceCounter try { float cur_rank = ((System.Diagnostics.PerformanceCounter
传统的.NET Framework提供的System.Diagnostics.PerformanceCounter类型可以帮助我们收集Windows操作系统下物理机或者进程的性能指标,基于PerformanceCounter
Class NLog.LayoutRenderers.PerformanceCounterLayoutRenderer: void InvalidatePerformanceCounter() void PerformanceCounter.Close () void Append(StringBuilder, LogEventInfo) Single PerformanceCounter.NextValue() Class NLog.Targets.WebServiceTarget Class NLog.LayoutRenderers.PerformanceCounterLayoutRenderer: void InvalidatePerformanceCounter() void PerformanceCounter.Close () Not Specified void Append(StringBuilder, LogEventInfo) Single PerformanceCounter.NextValue() Not Specified () Not Specified void InitializePerfCounter() void PerformanceCounter.Close() Not Specified void InitializePerfCounter
.NET API 在 .NET 的 20 多年发展历史中,我们对指标 API 的设计进行过几次迭代,各时期的设计都是受支持的,并且是非特定于供应商的: PerformanceCounter System.Diagnostics.PerformanceCounter