[FFmpeg-devel] [PATCH] avcodec/cfhd: add x86 SIMD

[Moritz Barsnick]

On Fri, Aug 21, 2020 at 15:10:09 +0200, Moritz Barsnick wrote:
> Let me add my promised benchmarks. I have nothing modern here (these
> CPUs are 10, 18 and 6 years old), but I can confirm the impressive
> improvements:
>
>                           Intel Atom D525   Intel Pentium 4  Intel Haswell i5-4200U
>
> MT_BeartoothHighw....avi: 0.489x -> 0.835x  0.23x -> 0.55x   2.13x  -> 3.07x
> bigger_res.mov:           0.057x -> 0.069x  0.02x -> 0.058x  0.174x -> 0.237x
> timelapse-pt-momsapt.avi: 1.11x  -> 1.9x    0.53x -> 1.37x   4.3x   -> 6.2x

This is a more modern one, very skewed by running in a VM restricted to
2 CPUs and 95% of the host CPU (yeah, shouldn't do that). But at least
the speed-up is shown.

                          Intel Kaby Lake i7-7500U

MT_BeartoothHighw....avi: 2.0x  -> 3.4x
bigger_res.mov:           0.21x -> 0.27x
timelapse-pt-momsapt.avi: 3.5x  -> 6.6x

Moritz