Average CPU usage question

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Please help...

I am trying to get an average CPU usage reading over a 5 second time-slice using code I have cobbled together from multiple forums but I am struggling...

Code so far

C#

using System;
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
using System.Windows.Forms;
using System.Timers;
using System.Threading;


namespace ConsoleApplication6
{
    class Program
    {
        static void Main(string[] args)
            {
            System.Timers.Timer aTimer = new System.Timers.Timer();
            aTimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);
            aTimer.Interval = 2000;
            aTimer.Enabled = true;
            Console.WriteLine("Press \'q\' to quit the sample.");
            while (Console.Read() != 'q') ;
            }  
        private static void OnTimedEvent(object source, ElapsedEventArgs e)
        {
               PerformanceCounter CPU = new PerformanceCounter("Processor", "% Processor Time", "_Total"); 
// I would like to get 5 samples of CPU and then calculate an average e.g. CPUTotal = (CPU1 + CPU2 + CPU3 + CPU4 + CPU5) / 5
//   console.writeline(CPUTotal + "%");
        }
    }
}

Any help please?

Posted 29-Sep-11 2:21am

CCodeNewbie

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3 solutions

Solution 1

How to get CPU usage of processes and threads[^]

Posted 29-Sep-11 2:40am

koolprasad2003

Solution 3

@shoputer

The timer is there so that it can collect a number of metrics every x minutes eg. every 10 minutes get the average CPU usage of 5 samples, get the available RAM etc. etc.

So, if I understand correctly, sum/rounds = the average CPU usage over the rounds?
e.g. Round 1 cpu usage = 0% (it always is on the first sample), Round 2 cpu usage = 5%, Round 3 cpu usage = 7%. Total over 3 rounds = 12%, divide by 3 rounds = 4% average usage?

Also, how do I get the "sampling" to close as it keeps going after 3 rounds?

Posted 29-Sep-11 3:22am

CCodeNewbie

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SvenMe · Accepted Answer · 2011-09-29T02:42:00

Play around with something like this.
If you insist on using a timer, store the result of your perf-counter somewhere and calculate it later.

C#

static void Main( string[] args )
{
    PerformanceCounter perfCounter = new PerformanceCounter( "Processor", "% Processor Time", "_Total" );
    float sum = 0;
    int rounds = 0;
    while ( rounds < 5 )
    {
        sum += perfCounter.NextValue();
        Thread.Sleep( 1000 );
        ++rounds;
    }

    perfCounter.Close();
    perfCounter.Dispose();

    Console.Out.WriteLine( sum / rounds );
    Console.Out.WriteLine( "Done" );
    Console.Read();
}