计算 Windows 进程的 CPU 使用率？
给定一个进程 ID，我如何使用 C# 获取该进程的 cpu 负载？
我已尝试使用 PerformanceCounter，如 c# 计算特定应用程序的 CPU 使用率中所述
我还尝试手动获取一个时间范围内进程的总 cpu 时间的两个值，并将 delta-cpu-time 除以 delta-total-time。
这两种方法一开始似乎工作得很好，但如果我将应用程序放在 Windows 任务管理器旁边，我的应用程序显示的内容总是是任务管理器显示的两倍。我尝试用从 10 毫秒到 10 秒的各种时间步长进行更新，但始终得到相同的结果。
嗯，当我写这篇文章时意识到这可能是某种双核问题......
Given a process ID, how can i get the cpu load from this process with C#?
I have tried using PerformanceCounter as described in c# calculate CPU usage for a specific application
I have also tried to manually take two values of the total cpu time for the process within a timeframe and divide the delta-cpu-time with the delta-total-time.
Both these methods seems to work fine at first but if i put my application next to windows task manager my application always shows about twice as much as the task manager does. I have tried to update with various timesteps from 10ms to 10sec and get same result all the time.
Hmm, realized when i wrote this that it might be some kind of dual core issue...
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如果您有两个核心，任务管理器会将 1 个 CPU 的 100% 使用率报告为 50%。这可能就是你的问题所在。
If you have two cores, the task manager is going to report 100% usage of 1 CPU as 50%. That's probably your issue right there.