What is Base Priority?

A precedence ranking that determines the order in which the threads of a process are scheduled for the processor. Use Task Manager to view and change base priorities.
For Message Queuing, a property that specifies the queue's priority in a public queue. You can set the base priority from -32,768 to 32,767; the default priority is 0. Private queues do not support base priority. Message Queuing routes and delivers messages first by base priority, then by message priority.