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User Space Packet Schedulers: Towards Rapid Prototyping of Queue-Management Algorithms

Author:Ralf Kundel, Paul Stiegele, Dat Tran, Julian Zobel, Osama Abboud, Rhaban Hark, Ralf Steinmetz
Date:February 2021
Kind:In proceedings - use for conference & workshop papers
Book title:Proceedings of the Conference on Networked Systems (NetSys)
Keywords:AQM, User Space, Congestion Control, Bufferbloat
Abstract:Quality of Service indicators in computer networks reached tremendous importance over the last years. Especially throughput and latency are directly influ- enced by the dimension of packet queues. Determining the optimal dimension based on the inevitable tradeoff between throughput and latency tends to be a hard, almost infeasible challenge. Several algorithms for Active Queue Management have been proposed to address this challenge over the last years. However, the deployment and by that the development of such algorithms is challenging as they are usually located within the operation systems’ kernel or implemented in fixed hardware. In this work, we investigate how novel algorithms can be deployed in user space for rapid prototyping with tolerable effort. We provide core performance characteristics and highlight the viability and reasonability of this approach.
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