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A tool to throttle the CPU usage of other processes.

# To limit an existing process with PID 1234 to only use 25% of the CPU:
cpulimit --pid <1234> --limit <25%>

# To limit an existing program by its executable name:
cpulimit --exe <program> --limit <25>

# To launch a given program and limit it to only use 50% of the CPU:
cpulimit --limit <50> -- <program arg1 arg2 ...>

# To launch a program, limit its CPU usage to 50% and run cpulimit in the background:
cpulimit --limit <50> --background -- <program>

# To kill its process if the program's CPU usage goes over 50%:
cpulimit --limit 50 --kill -- <program>

# To throttle both it and its child processes so that none go about 25% CPU:
cpulimit --limit <25> --monitor-forks -- <program>