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.
For example:
renice +5 ProcIDThe 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