使用PerformanceCounter獲取進程的CPU使用率

Question

我正在嘗試獲取特定進程的CPU使用率，但它僅返回0。我仍然不知道問題出在哪里。

Process[] processlist = Process.GetProcesses();
foreach (Process theprocess in processlist)
{
    if (GetProcessOwner(theprocess.Id) != "NO_OWNER")
    {
        if (theprocess.ProcessName != "svchost")
        {
            var ram = BytesToString(theprocess.PeakWorkingSet64);
            ram = ram.Replace("MB", "");

            string state = "";

            if (theprocess.MainWindowTitle == "") 
            {
                state = "background";
            }
            else 
            {
                state = "foreground";
            }

            sw.WriteLine("ID=" + theprocess.Id + "&NAME=" + theprocess.ProcessName + "&RAM=" + ram + "&STARTED=" + theprocess.StartTime + "&STATE=" + state);
            PerformanceCounter counter = new PerformanceCounter("Process", "% Processor Time", theprocess.ProcessName);
            Console.WriteLine("CPU="+counter.NextValue());
        }
    }
}

Answer 1

沒關系，因為下次調用NextValue時始終返回0 。

為了解決此錯誤，您可以在創建PerformanceCounter對象（耐用性黑客）后兩次調用NextValue函數。