You can do this by installing cpulimit. You can limit a certain
running application either by name or by process ID:
cpulimit -e firefox -l 30
This won’t let Firefox go beyond a 30% CPU usage limit.
If you’d rather go by process, you can do it like this:
cpulimit -p 3493 -l 40
நன்றிகளுடன்,
த.சு