问题描述
我的powershell脚本运行缓慢，有什么办法可以分析powershell脚本吗?
My powershell script runs slowly, is there any way to profile the powershell script?
推荐答案
你可以做 随机暂停 在 Powershell 调试器中.使脚本运行，并在运行时键入 Ctrl-C.它将停止，然后您可以显示堆栈.这会告诉你它在哪里，它在做什么，以及为什么.多次执行此操作，而不仅仅是一次.
You can do random-pausing in the Powershell debugger. Get the script running, and while it's running, type Ctrl-C. It will halt and then you can display the stack. That will tell you where it is, what it's doing, and why. Do this several times, not just once.
假设它需要两倍的时间.这意味着每次你打断它，你会发现它做缓慢的事情的概率是 50%.因此，如果您中断 10 次，您应该会在大约 5 个样本上看到这一点.
Suppose it is taking twice as long as it could. That means each time you interrupt it the probability you will catch it doing the slow thing is 50%. So if you interrupt it 10 times, you should see that on about 5 samples.
假设它花费了 5 倍的时间.这意味着 4/5 的时间被浪费了，所以你应该看到它大约 10 次中有 8 次.
Suppose it is taking 5 times as long as it could. That means 4/5 of the time is being wasted, so you should see it about 8 times out of 10.
即使只有 1/5 的时间被浪费了，您也应该看到它大约 10 次中的 2 次.您在 2 个样本上看到的任何东西，如果您能找到更快的方法，会给你很好的速度提升.
Even if as little as 1/5 of the time is being wasted, you should see it about 2 times out of 10. Anything you see on as few as 2 samples, if you can find a faster way to do it, will give you a good speed improvement.
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