In an example, there is disclosed a computing apparatus, having: a network interface configured to provide a plurality of queues; an application; and one or more logic elements comprising a queuing engine to: inspect an incoming packet; and assign the incoming packet to a dedicated queue for the application based on a classifier. There is also disclosed a method of providing a queuing engine, and one or more tangible, non-transitory computer-readable storage mediums having stored thereon executable instructions for providing a queuing engine.