Aging is the process of gradually increasing the priority

Priority

Priority may refer to:* Priority date, a concept of establishing waiting times in the immigration process by United States Department of State* Priority level, the priority of emergency communications...

 of a task, based on its waiting time. The aging technique estimates the time a process will run based on a weighted average of previous estimates and measured values. Aging can be used to reduce starvation of low priority tasks. Aging is used to ensure that jobs in the lower level queues will eventually complete their execution.