Re: zero-copy read() interface
From: dean gaudet
Date: Thu Aug 18 2005 - 18:34:35 EST
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
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/