sudo cpulimit -P /usr/bin/ffmpeg -l 30

sudo cpulimit --pid 17918 --limit 20
cpulimit -l 20 -p 59610

cpulimit -l 50 script.sh
cpulimit -l 10 yes > /dev/null &
cpulimit -l 10 command

con top o hop controlamos el proceso

https://scoutapm.com/blog/restricting-process-cpu-usage-using-nice-cpulimit-and-cgroups

https://www.howtoforge.com/how-to-limit-cpu-usage-of-a-process-with-cpulimit-debian-ubuntu