Question

我正在尝试在C＃中模仿Windows 7任务管理器（仅限性能选项卡），虽然我设法获得了大多数值，但我无法获得物理内存的缓存和空闲字节值。我知道他们的意思是：

缓存是指最近用于系统资源的物理内存量。

Free是当前未使用或不包含有用信息的内存量（与包含有用信息的缓存文件不同）。

但我的方法都没有产生任务管理器中显示的确切值。 e.g：

缓存：

PerformanceCounter PC4 = new PerformanceCounter();
PC4.CategoryName = "Memory";
PC4.CounterName = "Cache Bytes";
PC4.InstanceName = "";
Console.WriteLine((Int32)(PC4.NextValue() / (1024 * 1024)));

免

ObjectQuery wql = new ObjectQuery("SELECT * FROM Win32_OperatingSystem");
ManagementObjectSearcher searcher = new ManagementObjectSearcher(wql);
ManagementObjectCollection results = searcher.Get();
object ob = 0;
foreach (ManagementObject result in results)
{
  ob = result["FreePhysicalMemory"];
}//returns physical memory's <i>Available</i> byte, NOT <i>Free</i>

有什么我想念的吗？

Answer 1

您可以尝试查看System.Diagnostics.Process类。我认为Process.PagedMemorySize是你感兴趣的。以下代码示例将吐出一系列正在运行的进程及其mem用法：

Process[] processlist = Process.GetProcesses();

foreach(Process p in processlist){
    Console.WriteLine(“Process: {0} ID: {1} MEM:{2}”, p.ProcessName, p.Id, theprocess.PagedMemorySize);
}

如果没有PagedMemorySize，可以试试VirtualMemorySize64

http://msdn.microsoft.com/en-us/library/system.diagnostics.process(v=vs.110).aspx

Answer 2

您需要添加对Microsoft.VisualBasic的引用才能使用以下内容：

using System.Runtime.InteropServices;
using Microsoft.VisualBasic.Devices;

public class MemStat
{
    public ulong Available { get; set; }

    public ulong Total { get; set; }

    public ulong PhysicalMemoryInUse { get; set; }

    public ulong Free { get; set; }

    public ulong Cached { get; set; }

    public MemStat()
    {
        ObjectQuery wql = new ObjectQuery("SELECT * FROM Win32_OperatingSystem");

        ManagementObjectSearcher searcher = new ManagementObjectSearcher(wql);

        ManagementObjectCollection results = searcher.Get();

        var Available = new ComputerInfo().AvailablePhysicalMemory;

        this.Available = Available;

        var Total = new ComputerInfo().TotalPhysicalMemory;

        this.Total = Total;

        var PhysicalMemoryInUse = Total - Available;

        this.PhysicalMemoryInUse = PhysicalMemoryInUse;

        Object Free = new object();

        foreach (var result in results)
        {
            Free = result["FreePhysicalMemory"];

            this.Free = ulong.Parse(Free.ToString());

        }

        var Cached = Total - PhysicalMemoryInUse - ulong.Parse(Free.ToString());

        this.Cached = Cached;

    }

然后像这样使用它：

        ulong TotalMemory = new MemStat().Total;
        ulong FreeMemory = new MemStat().Free;

        Console.BackgroundColor = ConsoleColor.Blue;
        Console.ForegroundColor = ConsoleColor.Cyan;
        Console.WriteLine("    **** MY WINDOWS PROGRAM ****     ");
        Console.WriteLine("" + (TotalMemory/1024) + "K RAM SYSTEM " + FreeMemory + " BYTES FREE");

如何在Windows 7中获取缓存和释放的物理内存量？

2 个答案: