Process Scheduling

This isnt really the place for it but I thought some might be interested. Has any thought been given to the following process scheduling idea? As a process's cpu usage gets higher it priority gets slightly lower. So that if I have a process to run but someone is hogging the CPU my task while it is lower in usage will get slightly more CPU priority. I am not talking about the major steps in priority only the minor steps within a priority. So that this would only help 2 processes at the same priority, ie Normal,Low. I have never modified and recompiled a linux kernal, and I work only with Windows at work so I havent really been able to play with this idea. Just wodering if anyone else has. Thanks Charles Killmer