On Tue, 12 Jul 2022, Kousthu Gangarapu wrote:
Hi FFmpeg community, After installing the latest FFmpeg 5.0.1 from 4.3, I am seeing increased Avg CPU Utilization and increased number of threads for the same workload compared to FFmpeg v4.3. *Specifically,* 1. Increased Avg CPU utilization upto 15% - compared to version 4.3 for the same workload. 2. Increase in the number of threads per ffmpeg process by 3x - compared to version 4.3 for the same type of media conversion workload *My query:* 1. Is this expected? If yes, any specific reason? If not, any configuration/tuning to be done?
I would not say this is expected, but to figure out what is going on exactly you should build your own ffmpeg and bisect which commit caused the extra CPU usage between 4.3 and 5.0.1. Otherwise this is just guesswork. Alternatively you may also try git master and see if that is better.
Regards, Marton
2. Is there a way we can tune ffmpeg to reduce the CPU & thread counts back to v4.3 levels? *Hardware:* Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz / 48 CPUs Thread(s) per core: 2 Core(s) per socket: 12 Socket(s): 2 *Command used:* ffmpeg -y -v error -progress tcp://127.0.0.1:44477 -analyzeduration 25M -probesize 50M -thread_queue_size 2048 -err_detect aggressive -fflags +discardcorrupt -abort_on empty_output_stream -i udp:// 1.1.1.1:9000?fifo_size=10000000&overrun_nonfatal=1 -filter_complex [i:0x25]yadif[vout];[vout]split=4[out0][out1][out2][out3];[out0]setdar=256/144[v0];[out1]setdar=512/288[v1];[out2]setdar=1024/576[v2];[out3]setdar=1280/720[v3];[i:0x27]aresample=async=1:min_hard_comp=0.100000:first_pts=0[aout];[aout]asplit=4[a0][a1][a2][a3] -f flv -vcodec libx264 -s 256x144 -r 25/1 -b:v 200000 -acodec libfdk_aac -ar 48000 -b:a 32000 -sc_threshold 0 -pix_fmt yuv420p -flags +global_header+cgop -profile:v baseline -level 3.0 -preset fast -nal-hrd cbr -maxrate 200000 -minrate 200000 -bufsize 400000 -g 50 -map [v0] -map [a0] rtmp://lab2.com/rtmp/push/testfeed1 -f flv -vcodec libx264 -s 512x288 -r 25/1 -b:v 500000 -acodec libfdk_aac -ar 48000 -b:a 64000 -sc_threshold 0 -pix_fmt yuv420p -flags +global_header+cgop -profile:v baseline -level 3.0 -preset fast -nal-hrd cbr -maxrate 500000 -minrate 500000 -bufsize 1000000 -g 50 -map [v1] -map [a1] rtmp://lab2.com/rtmp/push/testfeed2 -f flv -vcodec libx264 -s 1024x576 -r 25/1 -b:v 1000000 -acodec libfdk_aac -ar 48000 -b:a 64000 -sc_threshold 0 -pix_fmt yuv420p -flags +global_header+cgop -profile:v main -level 3.1 -preset fast -nal-hrd cbr -maxrate 1000000 -minrate 1000000 -bufsize 2000000 -g 50 -map [v2] -map [a2] rtmp://lab2.com/rtmp/push/testfeed3 -f flv -vcodec libx264 -s 1280x720 -r 25/1 -b:v 1800000 -acodec libfdk_aac -ar 48000 -b:a 64000 -sc_threshold 0 -pix_fmt yuv420p -flags +global_header+cgop -profile:v high -level 4.0 -preset fast -nal-hrd cbr -maxrate 1800000 -minrate 1800000 -bufsize 3600000 -g 50 -map [v3] -map [a3] rtmp://lab2.com/rtmp/push/testfeed4 *FFmpeg 4.3 version:* ffmpeg -version ffmpeg version 4.3 Copyright (c) 2000-2020 the FFmpeg developers built with gcc 8 (GCC) configuration: --prefix=/root/ffmpeg-4.3/ffmpeg_build --pkg-config-flags=--static --extra-cflags='-I/root/ffmpeg-4.3/ffmpeg_build/include -I/usr/local/cuda/include' --extra-ldflags='-L/root/ffmpeg-4.3/ffmpeg_build/lib -L/usr/local/cuda/lib64' --extra-libs=-lpthread --extra-libs=-lm --bindir=/root/ffmpeg-4.3/bin --enable-gpl --enable-libfdk_aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libx264 --enable-libx265 --enable-cuda --enable-cuvid --enable-nvenc --enable-libnpp --enable-nonfree --enable-openssl libavutil 56. 51.100 / 56. 51.100 libavcodec 58. 91.100 / 58. 91.100 libavformat 58. 45.100 / 58. 45.100 libavdevice 58. 10.100 / 58. 10.100 libavfilter 7. 85.100 / 7. 85.100 libswscale 5. 7.100 / 5. 7.100 libswresample 3. 7.100 / 3. 7.100 libpostproc 55. 7.100 / 55. 7.100 *FFmpeg 5.0.1 version:*ffmpeg version 5.0.1 Copyright (c) 2000-2022 the FFmpeg developers built with gcc 8 (GCC) configuration: --prefix=/root/ffmpeg-5.0.1-p02/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/root/ffmpeg-5.0.1-p02/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg-5.0.1-p02/ffmpeg_build/lib --extra-libs=-lpthread --extra-libs=-lm --bindir=/root/ffmpeg-5.0.1-p02/bin --enable-gpl --enable-libfdk_aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree --enable-openssl libavutil 57. 17.100 / 57. 17.100 libavcodec 59. 18.100 / 59. 18.100 libavformat 59. 16.100 / 59. 16.100 libavdevice 59. 4.100 / 59. 4.100 libavfilter 8. 24.100 / 8. 24.100 libswscale 6. 4.100 / 6. 4.100 libswresample 4. 3.100 / 4. 3.100 libpostproc 56. 3.100 / 56. 3.100 Regards, Kousthub _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
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