[FFmpeg-devel] [PATCH 4/4] huffyuvencdsp: Add ff_diff_bytes_avx2

[Hendrik Leppkes]

On Mon, Oct 19, 2015 at 10:36 PM, Ganesh Ajjanagadde <gajjanag at mit.edu> wrote:
> On Mon, Oct 19, 2015 at 4:00 PM, Timothy Gu <timothygu99 at gmail.com> wrote:
>> About 16% faster on large clips (>1200px width), more than 2x slower on small clips
>> (352px). So using a heuristic to select with one to use.
>
> What system, what compiler, etc? Without any such information, numbers
> are meaningless. Please either give them in full, or not at all -
> particularly here since there is this "voodoo" threshold that needs to
> be picked.

It assembly, compiler is meaningless.