Process priority alteration
Basically, if you have identified a process that is using too much CPU time, you can reduce its effective priority by increasing its nice value with the renice command.
renice +5 ProcID
The nice value of the ProcID's would increase process from the normal 20 of a foreground process to 25. You must have root authority to reset the process ProcID's nice value to 20. Type:
renice -5 ProcID