Process priority manager on Linux or Unix/based system [on hold]

Multi tool use
Process priority manager on Linux or Unix/based system [on hold]
In the thread of a real-time application on a Linux platform, I am looking for a tool to manage process priority at system level. As far as I searched I did not find something corresponding to this need.
To be specific, I'm looking for something that would look like a daemon that monitors all created process, and that apply to them scheduling policy and priority according to a set of rules that can be defined.
E.g:
- Max priority for a certain group or user
- Apply specific Pol and Pri by process name,
- Apply default pol and pri for unknown process name etc.
- etc
I have a pretty good idea on how to implement this, but first i would know if we can find something on the shelf that I can customize.
Thanks in advance
Mondraker
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