The Flow Queue CoDel Packet Scheduler and Active Queue Management Algorithm
RFC 8290, “The Flow Queue CoDel Packet Scheduler and Active Queue Management Algorithm”, is an Experimental document published in January 2018 by T. Hoeiland-Joergensen, P. McKenney, D. Taht, J. Gettys, E. Dumazet. The canonical text is published by the RFC Editor.
Abstract
This memo presents the FQ-CoDel hybrid packet scheduler and Active Queue Management (AQM) algorithm, a powerful tool for fighting bufferbloat and reducing latency.
FQ-CoDel mixes packets from multiple flows and reduces the impact of head-of-line blocking from bursty traffic. It provides isolation for low-rate traffic such as DNS, web, and videoconferencing traffic. It improves utilisation across the networking fabric, especially for bidirectional traffic, by keeping queue lengths short, and it can be implemented in a memory- and CPU-efficient fashion across a wide range of hardware.
What “Experimental” means
Describes a specification that is part of a research or development effort, published so the community can gain experience with it.
The canonical text of RFC 8290 is hosted at rfc-editor.org. Available in TXT,HTML.
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