c# - 在 C# 中获取特定进程的磁盘使用情况

Question

如何在 C# 中获取特定进程的磁盘使用率 (MB/s)？

我能够像这样获得 CPU 使用率和 RAM 使用率:

var cpu = new PerformanceCounter("Process", "% Processor Time", ProcessName, true)
var ram = new PerformanceCounter("Process", "Working Set - Private", ProcessName, true);

Console.WriteLine($"CPU = {cpu.NextValue() / Environment.ProcessorCount} %");
Console.WriteLine($"RAM = {ram.NextValue() / 1024 / 1024} MB");

但我找不到任何与磁盘使用情况相关的信息。

如任务管理器中所示:

Answer 1

♻️ 方法

如前所述here ^{_^2} :

This API will tell you total number of I/O operations as well as total bytes.

You can call GetProcessIoCounters to get overall disk I/O data per process - you'll need to keep track of deltas and converting to time-based rate yourself.

所以，基于this C# tutorial你可以按照这些思路做一些事情:

struct IO_COUNTERS
{
    public ulong ReadOperationCount;
    public ulong WriteOperationCount;
    public ulong OtherOperationCount;
    public ulong ReadTransferCount;
    public ulong WriteTransferCount;
    public ulong OtherTransferCount;
}

[DllImport("kernel32.dll")]
private static extern bool GetProcessIoCounters(IntPtr ProcessHandle, out IO_COUNTERS IoCounters);

public static void Main()
{
    IO_COUNTERS counters;
    Process[] processes = Process.GetProcesses();

    foreach(Process process In processes)
    {
        try {
            GetProcessIoCounters(process.Handle, out counters);
            console.WriteLine("\"" + process.ProcessName + " \"" + " process has read " + counters.ReadTransferCount.ToString("N0") + "bytes of data.");
        } catch (System.ComponentModel.Win32Exception ex) {
        }
    }
    console.ReadKey();
}

^{_{使用 this将其转换为 VB.NET}}

但是 (System.ComponentModel.Win32Exception ex) 发生了

System.ComponentModel.Win32Exception (0x80004005): Access is denied
   at System.Diagnostics.ProcessManager.OpenProcess(Int32 processId, Int32 access, Boolean throwIfExited)
   at System.Diagnostics.Process.GetProcessHandle(Int32 access, Boolean throwIfExited)
   at System.Diagnostics.Process.OpenProcessHandle(Int32 access)
   at System.Diagnostics.Process.get_Handle()
   at taskviewerdisktest.Form1.Main() in C:\...\source\repos\taskviewerdisktest\taskviewerdisktest\Form1.vb:line 32

^{_{有些进程似乎真的很难访问..好消息是在我的情况下它们并不多(250 个中有 15 个左右)..}}

_{⚠️ 免责声明:这更像是一种“解决方案”而不是“解决方案”的方法}

♻️ 其他方法和引用

• GetProcessIoCounters function (winbase.h)
• IO_COUNTERS structure (winnt.h)
• Differences between Handle vs ID
• ETW Listener Approach
• Thread-post
• helpful?