每个程序的CPU使用率 [英] CPU Usage per program

问题描述

我被要求构建类似任务管理器的东西，我需要获取进程列表以及它们使用的%% cpu值.

这些不需要运行计数，我只需要我的应用程序启动时正在使用的CPU百分比即可.

我正在使用以下代码获取cpu百分比

I have been asked to build something like the task manager, I need to get a list of processes and how much of the cpu they are using in % value.

These dont need to be running counts i just need what percentage of the cpu was being used when my application started up.

I am getting the cpu percentage using the below code

Public Shared Function GetCpuUsage() As Integer

    Dim myCount As Integer
    Using cpu = New PerformanceCounter()

        With cpu
            .CategoryName = "Processor"
            .CounterName = "% Processor Time"
            .InstanceName = "_Total"
        End With

        myCount = cpu.NextValue()
        System.Threading.Thread.Sleep(1000)
        myCount = cpu.NextValue()
        System.Threading.Thread.Sleep(1000)
        myCount = cpu.NextValue()
    End Using

    Return myCount
End Function

我有一个问题是如何获取使用cpu用法的每个进程的％值，而忽略0处的任何值?

The question I have is how would i get the % value of each process that is using any cpu usage and ignore anything that is at 0?

推荐答案

看看:性能计数器 [使用PDH功能消耗计数器数据 [ System.Diagnostics.PerformanceData命名空间 [这篇文章 [

Have a look at: Performance Counters[^], Using the PDH Functions to Consume Counter Data[^] and System.Diagnostics.PerformanceData Namespace[^]

I guess this article[^] will help too.

Best regards
Espen Harlinn

出于这种目的，您可以使用WMI或System.Management，
http://msdn.microsoft.com/en-us/library/system.management.aspx [^ ].

这是一篇简短的入门文章:
http://www.csharphelp.com/2006/10/wmi-made-easy -for-c/ [ ^ ].

这是查询CPU使用率所需要的:
http://msdn.microsoft.com/zh-我们/library/windows/desktop/aa394277%28v=vs.85%29.aspx [ http://bit.ly/QMh4rI [ ^ ].

只是一个相关的代码示例:
http://social.msdn.microsoft.com /Forums/zh-CN/csharplanguage/thread/469ec6b7-4727-4773-9dc7-6e3de40e87b8/ [ http://social.msdn.microsoft.com /Forums/zh-CN/csharplanguage/thread/469ec6b7-4727-4773-9dc7-6e3de40e87b8/ [

For such purposes, you can use WMI, or System.Management,
http://msdn.microsoft.com/en-us/library/system.management.aspx[^].

This is a nice and short introductory article:
http://www.csharphelp.com/2006/10/wmi-made-easy-for-c/[^].

This is what you will need to query CPU usage:
http://msdn.microsoft.com/en-us/library/windows/desktop/aa394277%28v=vs.85%29.aspx[^].



There is a number of code samples with some cookbook recipes for WMI query which you can easily find if you Google; for example:
http://bit.ly/QMh4rI[^].

Just one relevant code sample:
http://social.msdn.microsoft.com/Forums/en-US/csharplanguage/thread/469ec6b7-4727-4773-9dc7-6e3de40e87b8/[^].

And this is the CodeProject article on the topic:
http://social.msdn.microsoft.com/Forums/en-US/csharplanguage/thread/469ec6b7-4727-4773-9dc7-6e3de40e87b8/[^].

I hope it''s enough for you to solve your problem.

Good luck,

—SA

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