[FFmpeg-devel] [PATCH 1/6] avcodec/h264: mmx2, sse2, avx 10-bit h chroma deblock/loop filter

[Carl Eugen Hoyos]

2016-12-01 17:57 GMT+01:00 James Darnley <jdarnley at obe.tv>:
> Yorkfield:
>  - mmx2: 2.44x faster (278 vs. 114 cycles)
>  - sse2: 3.35x faster (278 vs.  83 cycles)
>
> Skylake:
>  - mmx2: 1.69x faster (169 vs. 100 cycles)
>  - sse2: 2.34x faster (169 vs.  72 cycles)

Is it expected (or possible) that the speed impact is so
different for different Intel hardware?

>  - avx:  2.32x faster (169 vs.  73 cycles)

Don't you agree that if this is true (I don't know if it is)
the patch should not be applied as is?

Carl Eugen