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That's not the reason for the performance difference. Windows does have a fork primitive (ZwCreateProcess) and it's still slower than Linux's equivalent.

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Again, NtCreateProcess does not implement fork(). The fundamental characteristic of fork is that the child is an exact replica of the parent, down to the instruction pointer. Windows does not have a way to create a process object with such a configuration.

Also, using the Zw prefix doesn’t make you look more knowledgeable, it makes you look like you’re trying way too hard to borrow credibility.

Okay but people don't claim that copying the instruction pointer (a single machine register) is the reason for any speed difference. They claim it's due to the memory sharing. And that's easily disproven since you can share pages, just like on Linux, simply by passing null for the section handle, yet there's still a performance difference.

Why does it matter which prefix I used? They both point to the same routine so my point applies either way.

It's a completely uncontroversial fact that NT does implement fork(). Turn to page 183 of Helen Custer's "Inside Windows NT" and you will read about it.

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