With the increase in available network bandwidth and reduction in network latency, more emphasis has been placed on end-host QoS to provide quality of service guarantees for distributed real-time applications, such as video streaming servers, video conferencing applications, and VoIP applications. End-host QoS requires support from the underlying Operating System (OS) in the form of network schedulers and traffic controllers. GNU/Linux supports a variety of network schedulers for the provision of end-host QoS, but no easy-to-use API is provided between applications and system-level traffic controllers.
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