[RESOLVED] displaying cpu usage

[drattansingh]

hi. I'm trying to display the cpu usage ofmycomputer. I'm not a coding genius and i'm sure its just a simple mistake. Here's the code the I have:

PerformanceCounter CpuCounter;

CpuCounter = new PerformanceCounter();
CpuCounter.CategoryName = "Processor";
CpuCounter.CounterName = "% Processor Time";
CpuCounter.InstanceName = "_Total";
txtCPU.Text = CpuCounter.NextValue().ToString();

Just that its displaying the value 0 every time I run it. Also I tried using the RawValue method but the value being displayed is just too large. Could somebody help me pleaseeeeeee

Jennifer

[Hack]

Welcome to the forums.

Take a look at this

[drattansingh]

I got my code from that page. The ram counter is working fine. But the cpu usage is not. It is displaying only 0 every time I run it. I just cannot figure out the problem. Could somebody help me please.

Jennifer

[penagate]

It actually works fine, but the thing is it returns the average CPU usage between calls to NextValue(). The easiest way to get an approximation of average CPU usage is to set up a timer and query the CPU usage every 200 ms or so. The actual value that is returned will depend on your timer interval, but 200 ms gives you a nice balance between accuracy and update time.

Drop this in to test it out.

using System.Diagnostics;

public partial class Form1 : Form
{
    private Timer updateTimer;
    private PerformanceCounter cpuCounter;

    public Form1 ()
    {
        InitializeComponent();

        updateTimer = new Timer();
        updateTimer.Interval = 200;
        updateTimer.Tick += new EventHandler(updateTimer_Tick);

        InitialiseCounter();

        updateTimer.Start();
    }

    private void InitialiseCounter ()
    {
        cpuCounter = new PerformanceCounter(
            "Processor", 
            "% Processor Time", 
            "_Total", 
            true
        );
    }

    private void updateTimer_Tick (object sender, EventArgs e)
    {
        this.Text = "CPU Usage: " + 
                    Convert.ToInt32(cpuCounter.NextValue()).ToString() +
                    "%";
    }
}

[drattansingh]

Thanks a million penegate! I would give you a kiss if i could right now. It's working fine. Thanks so much for the help, I really appreciate it. Thank you for typing out the code so I could understand.

Jennifer

[penagate]

Heheh, any time