如何獲得超過 2 個內核的 CPU 使用率？

Question

我嘗試將我的程序 CPU 使用率除以一個內核。 現在我使用 PerformanceCounter 並在 0 和 1 之間更改 InstanceName 我有來自 2 個內核的數據。

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

我如何獲得第 3、第 4 個核心等的核心使用量？

有沒有人可以幫助我？

謝謝

Answer 1

我懷疑您真正要問的是“ 我如何計算內核數？”。 此代碼將計算內核數，然后基於此創建性能計數器。

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

這可能是一個老問題，但對於其他尋求不同解決方案的人來說，為什么不使用 System.Environment？

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;
}

編輯：我注意到這僅返回邏輯處理器的數量，而不是實際的核心數。

Answer 3

我以前沒有使用過 PerformanceCounter，但這樣做有什么問題嗎？

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 4

像這樣的事情也應該滿足您的要求

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());