[Bug 271798] multimedia/ffmpeg: Enable LTO by default on aarch64 and amd64

In reply to: bugzilla-noreply_a_freebsd.org: "[Bug 271798] multimedia/ffmpeg: Enable LTO by default on aarch64 and amd64"
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From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 23 Sep 2023 14:00:38 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=271798

--- Comment #3 from Daniel Engberg <diizzy@FreeBSD.org> ---
It is faster but not by much, might be different on other archs

Test setup:

FreeBSD 14.0-BETA3 (amd64)
Ryzen 7 7900 with CPUTYPE set to znver4 in /etc/make.conf

###### Decode MPEG-4 (XviD)

ffmpeg -benchmark -hide_banner -i sample-mpeg4.avi -map 0:v -f null -

=== LTO ===
bench: utime=13.090s stime=1.264s rtime=1.746s
bench: maxrss=60780kB

bench: utime=13.161s stime=1.212s rtime=1.749s
bench: maxrss=58996kB

bench: utime=13.116s stime=1.404s rtime=1.754s
bench: maxrss=62712kB

=== Plain ===
bench: utime=13.248s stime=1.294s rtime=2.067s
bench: maxrss=57208kB

bench: utime=13.377s stime=1.062s rtime=1.806s
bench: maxrss=56084kB

bench: utime=13.286s stime=1.198s rtime=1.812s
bench: maxrss=59928kB

###### Decode H264

ffmpeg -benchmark -hide_banner -i sample-h264.mkv -map 0:v -f null -

=== LTO ===
bench: utime=844.833s stime=18.668s rtime=90.596s
bench: maxrss=210632kB

bench: utime=847.122s stime=17.699s rtime=90.694s
bench: maxrss=206476kB

bench: utime=842.610s stime=17.406s rtime=90.498s
bench: maxrss=209076kB

=== Plain ===
bench: utime=845.918s stime=17.349s rtime=90.132s
bench: maxrss=208204kB

bench: utime=844.163s stime=17.513s rtime=90.112s
bench: maxrss=208424kB

bench: utime=850.070s stime=17.515s rtime=90.462s
bench: maxrss=207528kB

###### Decode HEVC

ffmpeg -benchmark -hide_banner -i sample-h265.mkv -map 0:v -f null -

=== LTO ===
bench: utime=1153.633s stime=9.111s rtime=194.839s
bench: maxrss=269004kB

bench: utime=1152.164s stime=8.431s rtime=194.523s
bench: maxrss=266340kB

bench: utime=1150.939s stime=8.937s rtime=194.489s
bench: maxrss=271228kB

=== Plain ===
bench: utime=1159.971s stime=9.785s rtime=195.534s
bench: maxrss=266032kB

bench: utime=1157.997s stime=8.402s rtime=195.144s
bench: maxrss=266232kB

bench: utime=1159.178s stime=8.512s rtime=195.363s
bench: maxrss=266276kB

###### Decode MPEG-2 (HDTV) and deinerlace using bwdif

ffmpeg -benchmark -hide_banner -i sample.tp -map 0:v -vf bwdif -f null -

=== LTO ===
bench: utime=1030.029s stime=33.336s rtime=109.380s
bench: maxrss=70504kB

bench: utime=1027.714s stime=34.623s rtime=109.114s
bench: maxrss=69032kB

bench: utime=1026.165s stime=34.285s rtime=109.475s
bench: maxrss=68920kB

=== Plain ===
bench: utime=1032.744s stime=34.641s rtime=109.661s
bench: maxrss=68444kB

bench: utime=1034.172s stime=34.125s rtime=109.460s
bench: maxrss=69872kB

bench: utime=1035.130s stime=33.864s rtime=109.430s
bench: maxrss=68116kB

###### Resample audio from 44100Hz to 48000Hz

ffmpeg -benchmark -hide_banner -i sample.mp3 -ar 48000 -f null -

=== LTO ===
bench: utime=2.947s stime=0.263s rtime=2.672s
bench: maxrss=28296kB

bench: utime=3.131s stime=0.436s rtime=2.848s
bench: maxrss=28324kB

bench: utime=3.132s stime=0.317s rtime=2.798s
bench: maxrss=28276kB

=== Plain ===
bench: utime=3.573s stime=0.491s rtime=4.022s
bench: maxrss=28320kB

bench: utime=3.484s stime=0.302s rtime=3.132s
bench: maxrss=28312kB

bench: utime=3.323s stime=0.277s rtime=2.987s
bench: maxrss=28312kB

###### Audio calculate EBUR128 values

ffmpeg -benchmark -hide_banner -i sample.mp3 -filter_complex ebur128 -f null -

=== LTO ===
bench: utime=5.301s stime=0.487s rtime=6.268s
bench: maxrss=31820kB

bench: utime=4.928s stime=0.365s rtime=4.748s
bench: maxrss=31852kB

bench: utime=5.195s stime=0.446s rtime=4.925s
bench: maxrss=31844kB

=== Plain ===
bench: utime=5.667s stime=0.612s rtime=5.283s
bench: maxrss=31184kB

bench: utime=5.151s stime=0.357s rtime=4.917s
bench: maxrss=31184kB

bench: utime=5.052s stime=0.271s rtime=4.769s
bench: maxrss=31200kB

###### Audio calculate ReplayGain

ffmpeg -benchmark -hide_banner -i sample.mp3 -filter_complex replaygain -f null
-

=== LTO ===
bench: utime=5.558s stime=0.429s rtime=5.230s
bench: maxrss=29412kB

bench: utime=5.504s stime=0.383s rtime=5.184s
bench: maxrss=29420kB

bench: utime=5.222s stime=0.169s rtime=4.942s
bench: maxrss=29400kB

=== Plain ===
bench: utime=5.442s stime=0.434s rtime=5.178s
bench: maxrss=28752kB

bench: utime=5.393s stime=0.281s rtime=5.083s
bench: maxrss=28768kB

bench: utime=5.295s stime=0.314s rtime=5.062s
bench: maxrss=28756kB

###### File sizes

=== LTO ===

ls -l work/stage/usr/local/bin/ff*
-rwxr-xr-x  1 root wheel 270928 Sep 23 15:50 work/stage/usr/local/bin/ffmpeg
-rwxr-xr-x  1 root wheel 168344 Sep 23 15:50 work/stage/usr/local/bin/ffprobe

ls -l work/stage/usr/local/lib/lib*.so*.*.*
-rwxr-xr-x  1 root wheel 16656888 Sep 23 15:50
work/stage/usr/local/lib/libavcodec.so.60.3.100
-rwxr-xr-x  1 root wheel    27784 Sep 23 15:50
work/stage/usr/local/lib/libavdevice.so.60.1.100
-rwxr-xr-x  1 root wheel  5668272 Sep 23 15:50
work/stage/usr/local/lib/libavfilter.so.9.3.100
-rwxr-xr-x  1 root wheel  3308024 Sep 23 15:50
work/stage/usr/local/lib/libavformat.so.60.3.100
-rwxr-xr-x  1 root wheel   880224 Sep 23 15:50
work/stage/usr/local/lib/libavutil.so.58.2.100
-rwxr-xr-x  1 root wheel    67104 Sep 23 15:50
work/stage/usr/local/lib/libpostproc.so.57.1.100
-rwxr-xr-x  1 root wheel   126760 Sep 23 15:50
work/stage/usr/local/lib/libswresample.so.4.10.100
-rwxr-xr-x  1 root wheel  1449664 Sep 23 15:50
work/stage/usr/local/lib/libswscale.so.7.1.100

=== Plain ===

ls -l work/stage/usr/local/bin/ff*
-rwxr-xr-x  1 root wheel 279688 Sep 23 15:46 work/stage/usr/local/bin/ffmpeg
-rwxr-xr-x  1 root wheel 183200 Sep 23 15:46 work/stage/usr/local/bin/ffprobe

ls -l work/stage/usr/local/lib/lib*.so*.*.*
-rwxr-xr-x  1 root wheel 16418296 Sep 23 15:46
work/stage/usr/local/lib/libavcodec.so.60.3.100
-rwxr-xr-x  1 root wheel    28112 Sep 23 15:46
work/stage/usr/local/lib/libavdevice.so.60.1.100
-rwxr-xr-x  1 root wheel  5527904 Sep 23 15:46
work/stage/usr/local/lib/libavfilter.so.9.3.100
-rwxr-xr-x  1 root wheel  2622664 Sep 23 15:46
work/stage/usr/local/lib/libavformat.so.60.3.100
-rwxr-xr-x  1 root wheel   839488 Sep 23 15:46
work/stage/usr/local/lib/libavutil.so.58.2.100
-rwxr-xr-x  1 root wheel    67536 Sep 23 15:46
work/stage/usr/local/lib/libpostproc.so.57.1.100
-rwxr-xr-x  1 root wheel   127464 Sep 23 15:46
work/stage/usr/local/lib/libswresample.so.4.10.100
-rwxr-xr-x  1 root wheel  1483240 Sep 23 15:46
work/stage/usr/local/lib/libswscale.so.7.1.100

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