You have to take the overhead of mapping the entire file and of TLB
shootdowns while setting up the VM with mmap but not with sendfile().
> Resuming, sendfile() without zero-copy is pure cheating,
> if we added it to API it means that we plan to implement zero copy
> one day. 8)
Yep
> BTW is it really true, that NT transmitfile() does zero copy?
> I strongly suspect, it does not.
NT5 beta claims to
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