cpulimit — A tool to throttle the CPU usage of other processes. More information: <https://manned.org/cpulimit>

Limit an existing process with PID 1234 to only use 25% of the CPU

cpulimit {{[-p|--pid]}} {{1234}} {{[-l|--limit]}} {{25%}}

Limit an existing program by its executable name

cpulimit {{[-e|--exe]}} {{program}} {{[-l|--limit]}} {{25}}

Launch a given program and limit it to only use 50% of the CPU

cpulimit {{[-l|--limit]}} {{50}} -- {{program argument1 argument2 ...}}

Launch a program, limit its CPU usage to 50% and run cpulimit in the background

cpulimit {{[-l|--limit]}} {{50}} {{[-b|--background]}} -- {{program}}

Kill its process if the program's CPU usage goes over 50%

cpulimit {{[-l|--limit]}} 50 {{[-k|--kill]}} -- {{program}}