On Mon, Aug 19, 2013 at 2:56 PM, Kyle J. McKay <mack...@gmail.com> wrote:
>
> The fact that the entire file is read into memory when applying the filter
> does not seem like a good thing (see #7-#10 above).
Yeah, that's horrible. Its likely bad for performance too, because
even if you have enough memory, it blows everything out of the L2/L3
caches, and if you don't have enough memory it obviously causes other
problems.
So it would probably be a great idea to make the filtering code able
to do things in smaller chunks, but I suspect that the patch to chunk
up xread/xwrite is the right thing to do anyway.
Linus
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