如何获取超过2个核心的CPU使用率？

Question

我尝试将程序的 CPU 使用率除以核心数。现在我使用性能计数器 并将 InstanceName 更改为 0 和 1 之间，我有来自 2 个核心的数据。

PerformanceCounter pc0 = new PerformanceCounter("Processor", "% Processor Time", "0");
PerformanceCounter pc1 = new PerformanceCounter("Processor", "% Processor Time", "1");

我如何获得第三个、第四个核心等的核心使用情况？

有人可以帮助我吗？

谢谢

Answer 1

我怀疑您真正要问的是“如何计算核心数量？”。此代码将计算核心数量，然后根据该数量创建性能计数器。

int coreCount = 0;
foreach (var item in new System.Management.ManagementObjectSearcher("Select * from Win32_Processor").Get())
{
    coreCount += int.Parse(item["NumberOfCores"].ToString());
}

PerformanceCounter[] pc = new PerformanceCounter[coreCount];

for (int i = 0; i < coreCount; i++)
{
    pc[i] = new PerformanceCounter("Processor", "% Processor Time", i.ToString());
    Console.WriteLine(pc[i].CounterName);
}

Answer 2

我以前没有使用过 PerformanceCounter，但是这样做有什么问题吗？

PerformanceCounter pc0 = new PerformanceCounter("Processor", "% Processor Time", "0");
PerformanceCounter pc1 = new PerformanceCounter("Processor", "% Processor Time", "1");
PerformanceCounter pc2 = new PerformanceCounter("Processor", "% Processor Time", "2");
PerformanceCounter pc3 = new PerformanceCounter("Processor", "% Processor Time", "3");

Answer 3

这可能是一个老问题，但对于寻找不同解决方案的其他人来说，为什么不使用 System.Environment 呢？

public static List<System.Diagnostics.PerformanceCounter> GetPerformanceCounters()
{
    List<System.Diagnostics.PerformanceCounter> performanceCounters = new List<System.Diagnostics.PerformanceCounter>();
    int procCount = System.Environment.ProcessorCount;
    for (int i = 0; i < procCount; i++)
    {
        System.Diagnostics.PerformanceCounter pc = new System.Diagnostics.PerformanceCounter("Processor", "% Processor Time", i.ToString());
        performanceCounters.Add(pc);
    }
    return performanceCounters;
}

编辑：我注意到这仅返回逻辑处理器的数量，而不是实际的核心数量。

Answer 4

像这样的事情也应该满足您的要求

public List<string> GetServerStatus()
{
    List<string> cpuStatus = new List<string>();
    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;
}

Answer 5

foreach (var item in new System.Management.ManagementObjectSearcher("Select NumberOfLogicalProcessors from Win32_Processor").Get())
    coreCount += int.Parse(item["NumberOfLogicalProcessors"].ToString());

PerformanceCounter[] pc = new PerformanceCounter[coreCount];

for (int i = 0; i < coreCount; i++)
    pc[i] = new PerformanceCounter("Processor", "% Processor Time", i.ToString());