[FFmpeg-devel] [PATCH 2/5] fate: avoid framemd5, use framecrc its faster

[Nicolas George]

L'octidi 28 floréal, an CCXXI, Reimar Döffinger a écrit :
> Care to update to see if it's worth bothering with MD5 further?

Of course.

Here are the new results:

lavu    MD5      size:  1048576  runs:     1024  time:    5.478 +- 0.045
openssl MD5      size:  1048576  runs:     1024  time:    5.069 +- 0.063

Here are yesterday's results:

lavu          MD5      size:  1048576  runs:     1024  time:    8.212 +- 0.121
openssl-noasm MD5      size:  1048576  runs:     1024  time:    5.424 +- 0.353
openssl-asm   MD5      size:  1048576  runs:     1024  time:    5.085 +- 0.320

> Do they have ASM for MD5? If so it seems rather pointless, the
> difference is inside the error margins...

Yes, they have. Yesterday's tests show a surprisingly large error margin, I
do not know what caused it. The asm for MD5 shows a visible speedup, but
probably not worth the effort.

Regards,

-- 
  Nicolas George
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 198 bytes
Desc: Digital signature
URL: <http://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20130517/35183604/attachment.asc>