@Galen gave a good explanation of using OS tools to achieve this.
@MariaD
SAS Enterprise Miner nodes can be quite intensive, CPU wise, and long running. By giving priority to them, you might degrade the performance for other users completely.
Maybe also consider....
1.) Review the total SAS workload over a 1,7 and 30 day period. Are there any processes that can be moved to off-peak periods like overnight or weekends ? An ideal situation is where user and batch jobs don't overlap, or as little as possible.
2.) Has the system been tuned in both SAS and the OS ?
3.) Are you monitoring the system utilization ? CPU, RAM, etc.
4.) If your environment is really expanding a lot, then maybe look at SAS Grid. It has some very good workload management features
Your mileage will vary, but the above points might yield some interesting insights into your system.
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