获取某一个进程cpu 占用率 示例源码

支持多核 支持 实时读取

using System;using System.Collections.Generic;using System.Diagnostics;using System.Threading;using Microsoft.VisualStudio.TestTools.UnitTesting;namespace Dev.ProcessMonitor.Test{ [TestClass] public class UnitTest1 { [TestMethod] public void GetAllProcess() { Process[] processes = Process.GetProcesses(); foreach (Process process in processes) { Console.WriteLine("Process Name: {0}, Responding: {1}", process.ProcessName, process.Responding); } Console.Write("press enter"); } [TestMethod] public void GetProcessByName() { string processName = "conhost"; var prcess = Process.GetProcessesByName(processName); foreach (var process in prcess) { Console.WriteLine(process.ProcessName "=>" process.Id "=>" process.MainWindowTitle "=>" process.Responding); } } [TestMethod] public void TestGetCpu() { string processName = "StatService"; var dicCpu = Dev.ProcessMonitor.ProcessManager.GetCpu(processName); foreach (var f in dicCpu) { Console.WriteLine(f.Key "=>" f.Value); } } [TestMethod] public void getAllProcessCpu() { //新建一个Stopwatch变量用来统计程序运行时间 Stopwatch watch = Stopwatch.StartNew(); //获取本机运行的所有进程ID和进程名,并输出哥进程所使用的工作集和私有工作集 foreach (Process ps in Process.GetProcesses()) { PerformanceCounter pf1 = new PerformanceCounter("Process", "Working Set - Private", ps.ProcessName); PerformanceCounter pf2 = new PerformanceCounter("Process", "Working Set", ps.ProcessName); Console.WriteLine("{0}:{1} {2:N}KB", ps.ProcessName, "工作集(进程类)", ps.WorkingSet64 / 1024); Console.WriteLine("{0}:{1} {2:N}KB", ps.ProcessName, "工作集 ", pf2.NextValue() / 1024); //私有工作集 Console.WriteLine("{0}:{1} {2:N}KB", ps.ProcessName, "私有工作集 ", pf1.NextValue() / 1024); } watch.Stop(); Console.WriteLine(watch.Elapsed); } [TestMethod] public void TestCpu2() { string processName = "StatService"; //获取当前进程对象 Process cur = Process.GetProcessesByName(processName)[0]; PerformanceCounter curpcp = new PerformanceCounter("Process", "Working Set - Private", cur.ProcessName); PerformanceCounter curpc = new PerformanceCounter("Process", "Working Set", cur.ProcessName); PerformanceCounter curtime = new PerformanceCounter("Process", "% Processor Time", cur.ProcessName); //上次记录CPU的时间 TimeSpan prevCpuTime = TimeSpan.Zero; //Sleep的时间间隔 int interval = 1000; PerformanceCounter totalcpu = new PerformanceCounter("Processor", "% Processor Time", "_Total"); SystemInfo sys = new SystemInfo(); const int KB_DIV = 1024; const int MB_DIV = 1024 * 1024; const int GB_DIV = 1024 * 1024 * 1024; var i = 0; while (i < 5) { //第一种方法计算CPU使用率 //当前时间 TimeSpan curCpuTime = cur.TotalProcessorTime; //计算 double value = (curCpuTime - prevCpuTime).TotalMilliseconds / interval / Environment.ProcessorCount * 100; prevCpuTime = curCpuTime; Console.WriteLine("{0}:{1} {2:N}KB CPU使用率：{3}", cur.ProcessName, "工作集(进程类)", cur.WorkingSet64 / 1024, value);//这个工作集只是在一开始初始化，后期不变 Console.WriteLine("{0}:{1} {2:N}KB CPU使用率：{3}", cur.ProcessName, "工作集 ", curpc.NextValue() / 1024, value);//这个工作集是动态更新的 //第二种计算CPU使用率的方法 Console.WriteLine("{0}:{1} {2:N}KB CPU使用率：{3}%", cur.ProcessName, "私有工作集 ", curpcp.NextValue() / 1024, curtime.NextValue() / Environment.ProcessorCount); //Thread.Sleep(interval); //第一种方法获取系统CPU使用情况 Console.WriteLine("1系统CPU使用率：{0}%", totalcpu.NextValue()); //Thread.Sleep(interval); //第二章方法获取系统CPU和内存使用情况 Console.WriteLine("2系统CPU使用率：{0}%，系统内存使用大小：{1}MB({2}GB)", sys.CpuLoad, (sys.PhysicalMemory - sys.MemoryAvailable) / MB_DIV, (sys.PhysicalMemory - sys.MemoryAvailable) / (double)GB_DIV); Thread.Sleep(interval); } //Console.ReadLine(); } [TestMethod] public void TestCpuLev() { string processName = "StatService"; var processes = Process.GetProcessesByName(processName); var processorcount = System.Environment.ProcessorCount; Stopwatch watch = Stopwatch.StartNew(); watch.Start(); var Dic = new Dictionary<int, TimeSpan>(); foreach (var process in processes) { var now = process.TotalProcessorTime; Dic[process.Id] = now; } Thread.Sleep(1 * 1000); var dicle = new Dictionary<int, long>(); foreach (var process in processes) { var now = process.TotalProcessorTime; //Dic[process.Id]; var ts1 = new TimeSpan(); var ts = now - Dic[process.Id]; dicle[process.Id] = ts.Ticks; } watch.Stop(); foreach (var l in dicle) { Console.WriteLine(l.Key "=>" l.Value "=>" (l.Value / (watch.ElapsedTicks / processorcount)) "%"); } } }}