[FFmpeg-trac] #5171(ffmpeg:new): Performance degradation of FFmpeg on POWER
FFmpeg
trac at avcodec.org
Tue Jan 19 10:07:57 CET 2016
#5171: Performance degradation of FFmpeg on POWER
-------------------------------------+-------------------------------------
Reporter: Priya | Type:
Status: new | enhancement
Component: ffmpeg | Priority: important
Keywords: | Version: git-
POWER,performance,x264 | master
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
-------------------------------------+-------------------------------------
Performance of FFmpeg using x264 codec on ppc64le is 30%-50% slower than
x86. This is in contrast to what is expected on Power8/LE. The x264 and
other codecs needs to be further optimized for Power8/LE as there is
signification performance degradation on POWER. Attached are the test
results for FFmpeg+x264 codec.
FFmpeg was compiled as:
./configure --enable-gpl --enable-memory-poisoning --enable-avresample
--enable-libx264 --extra-cflags=-I/usr/local/include --extra-
ldflags=-L/usr/local/lib
x264 codec is compiled as:
./configure --enable-shared --enable-static --enable-debug
Run time options used:
perf stat -o perf.log ffmpeg -i VanillaCakeRecipeDemonstration-
Joyofbaking.com.mp4 -vcodec libx264 -acodec aac -strict experimental
-threads 0 -level 31 -r 30000/1001 -b 1900k -pix_fmt yuv420p -tune ssim
-profile high -vf setdar=16:9,setsar=1:1 -x264opts
stats=x264_00_2pass.log:bframes=4:b-adapt=0:b-bias=20:b-pyramid=normal:ref=1:partitions=all:direct=auto:me=umh:merange=12:subme=9:trellis=0
:no-fast-pskip=1:no-dct-decimate=1:fps=29.97 -f mp4 -y /dev/null
--
Ticket URL: <https://trac.ffmpeg.org/ticket/5171>
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