The default legacy BGP execution mechanism is 'Multiple Queues' and uses specified queues for background processes. The recommended BGP execution mechanism is 'One Queue' and is defined in the BGP One Queue topic.
Multiple queues are used when the BackgroundProcess.Scheduler.PluginID configuration property is set as MultipleQueuesBGPScheduler.
A background process queue is a way of handling system processes that ensures high-level system performance. BGP queues can be named and configured to control which processes run on which server and how many may run at the same time on each server. Background processes that share a queue also share the number of simultaneous processes that can be run for a given application server.
For more information about using multiple queues, refer to the following topics: