c#获取CPU使用率高的进程

发布：2022/12/3 16:03:31作者：管理员来源：本站浏览次数：731

static void Main(string[] args)

{

PerformanceCounter myAppCpu =

new PerformanceCounter("Process", "% Processor Time", "OUTLOOK", true);

// will always start at 0

float firstValue = cpuCounter.NextValue();

System.Threading.Thread.Sleep(1000);

// now matches task manager reading

int secondValue = (int)cpuCounter.NextValue();

}

对于整个系统CPU,我有

PerformanceCounter cpuCounter = new PerformanceCounter();

cpuCounter.CategoryName = "Processor";

cpuCounter.CounterName = "% Processor Time";

cpuCounter.InstanceName = "_Total";

// will always start at 0

float firstValue = cpuCounter.NextValue();

System.Threading.Thread.Sleep(1000);

// now matches task manager reading

int secondValue = (int)cpuCounter.NextValue();

有什么方法可以找到大多数CPU消耗过程吗？

解决方法:

using System;

using System.Linq;

using System.Threading;

using System.Diagnostics;

using System.Collections.Generic;

namespace ProcessCount

{

static class Program

{

static void Main()

{

var counterList = new List<PerformanceCounter>();

while (true)

{

var procDict = new Dictionary<string, float>();

Process.GetProcesses().ToList().ForEach(p =>

{

using (p)

if (counterList

.FirstOrDefault(c => c.InstanceName == p.ProcessName) == null)

counterList.Add(

new PerformanceCounter("Process", "% Processor Time",

p.ProcessName, true));

});

counterList.ForEach(c =>

{

try

{

// http://social.technet.microsoft.com/wiki/contents/

// articles/12984.understanding-processor-processor-

// time-and-process-processor-time.aspx

// This value is calculated over the base line of

// (No of Logical CPUS * 100), So this is going to be a

// calculated over a baseline of more than 100.

var percent = c.NextValue() / Environment.ProcessorCount;

if (percent == 0)

return;

// Uncomment if you want to filter the "Idle" process

//if (c.InstanceName.Trim().ToLower() == "idle")

// return;

procDict[c.InstanceName] = percent;

}

catch (InvalidOperationException) { /* some will fail */ }

});

Console.Clear();

procDict.OrderByDescending(d => d.Value).ToList()

.ForEach(d => Console.WriteLine("{0:00.00}% - {1}", d.Value, d.Key));

Thread.Sleep(1000);

}

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