Re: zero-copy read() interface

On Thu, 18 Aug 2005, Folkert van Heusden wrote:

> Doesn't that one also use copying? I've also heard that using mmap is
> expensive due to pagefaulting. I've found, for example, that copying a
> 1.3GB file using read/write instead of mmap & memcpy is seconds faster.

why would you memcpy if you're using mmap()?  just write() the mmap()d 
region.

-dean
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