How to get CPU usage for more than 2 cores?

Question

I try to get in my program CPU usage divided by a cores. Now I use the PerformanceCounter and changing the InstanceName between 0 and 1 I have the data from 2 cores.

Answer 1

Some thing like this should also work for your requirement

public List GetServerStatus()
{
    List cpuStatus = new List();
    ObjectQuery wmicpus = new WqlObjectQuery("SELECT * FROM Win32_Processor");
    ManagementObjectSearcher cpus = new ManagementObjectSearcher(wmicpus);
    try
    {
        int coreCount = 0;
        int totusage = 0;               
        foreach (ManagementObject cpu in cpus.Get())
        {
            //cpuStatus.Add(cpu["DeviceId"] + " = " + cpu["LoadPercentage"]);
            coreCount += 1;
            totusage += Convert.ToInt32(cpu["LoadPercentage"]);
        }
        if (coreCount > 1)
        {
            double ActUtiFloat = totusage / coreCount;
            int ActUti = Convert.ToInt32(Math.Round(ActUtiFloat));
            //Utilisation = ActUti + "%";
            cpuStatus.Add("CPU = " + ActUti);
        }
        else
        {
            cpuStatus.Add("CPU = " + totusage);
        }
    }
    catch (Exception ex)
    {
        throw ex;
    }
    finally
    {
        cpus.Dispose();
    }            
    return cpuStatus;
}