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Impact on credit freeze before gate closing in CBS and GCL integration into TSN

Daigmorte, Hugo and Boyer, Marc Impact on credit freeze before gate closing in CBS and GCL integration into TSN. (2019) In: 27th International Conference on Real-Time Networks and Systems (RTNS 2019), 6 November 2019 - 8 November 2019 (Toulouse, France).

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Official URL: https://doi.org/10.1145/3356401.3356412

Abstract

The Time Sensitive Networking (TSN) task group has added a set of mechanisms to Ethernet in order to provide a real-time network. In particular, the output port scheduling based on a Credit-Based Shaper (CBS) algorithm, that was introduced formerly by the Audio-Video Bridging (AVB) task group, has been enhanced with a time driven Gate Control List (GCL). This implies some update in the credit evolution rules, and several solutions may exist. In this paper, we compare the solution used in the standard with another one used in most papers, and also with a third one, designed as a trade-off between the two others. The comparison is first done on some hand-made examples, showing some credit overflow and unfairness potential problems. Then, simulations are done on a single switch with 3 CBS queues.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-02335619
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
French research institutions > Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE)
Laboratory name:
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Deposited By: Hugo Daigmorte
Deposited On:28 Oct 2019 12:42

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