arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2409.19792cs.NI
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时间敏感网络中循环整形器的综合评估:CyclicSim

CyclicSim: Comprehensive Evaluation of Cyclic Shapers in Time-Sensitive Networking

Rubi Debnath, Luxi Zhao, Mohammadreza Barzegaran, Sebastian Steinhorst

AI总结:

本文提出CyclicSim开源框架,首次在OMNeT++/INET4.4中统一建模并综合评估CQF、CSQF和MCQF三种循环整形器,揭示MCQF支持多样时序需求,而CSQF在TSN中延迟与抖动更大且优势有限。

摘要:

循环排队与转发(CQF)是一种关键的时间敏感网络(TSN)整形机制,它利用简单的门控列表(GCL)确保有界延迟。近年来,CQF的变体相继出现,包括周期特定排队与转发(CSQF)和多循环排队与转发(MCQF)。虽然时间感知整形器(TAS)、异步流量整形器(ATS)、基于信用的整形器(CBS)和严格优先级(SP)等主流TSN机制已被广泛研究,但循环整形器尚未得到充分评估。本文对CQF、CSQF和MCQF进行了全面分析,并深入探讨了它们的性能。我们通过在合成网络和真实网络上的仿真与定量分析来量化延迟。我们首次引入了一个基于OMNeT++和INET4.4的开源框架,能够对全部三种循环整形器变体进行建模。该工具有助于验证新算法,并可作为循环整形器的基准。评估结果表明,MCQF支持多样化的时序需求,而CSQF由于增加了额外队列,与CQF相比,往往会给某些时间触发(TT)流带来更大的延迟和抖动。此外,在传播延迟不如广域网(WAN)中关键的TSN网络中,CSQF并未表现出显著优势。

英文摘要:

Cyclic Queuing and Forwarding (CQF) is a key Time-Sensitive Networking (TSN) shaping mechanism that ensures bounded latency using a simple gate control list (GCL). Recently, variants of CQF, including Cycle Specific Queuing and Forwarding (CSQF) and Multi Cyclic Queuing and Forwarding (MCQF), have emerged. While popular TSN mechanisms such as the Time-Aware Shaper (TAS), Asynchronous Traffic Shaper (ATS), Credit-Based Shaper (CBS), and Strict Priority (SP) have been extensively studied, cyclic shapers have not been thoroughly evaluated. This paper presents a comprehensive analysis of CQF, CSQF, and MCQF, providing insights into their performance. We quantify delays through simulations and quantitative analysis on both synthetic and realistic networks. For the first time, we introduce an open-source OMNeT++ and INET4.4 based framework capable of modeling all three cyclic shaper variants. Our tool facilitates the validation of new algorithms and serves as a benchmark for cyclic shapers. Our evaluations reveal that MCQF supports diverse timing requirements, whereas CSQF, with its additional queue, often results in larger delays and jitter for some TT flows compared to CQF. Additionally, CSQF does not demonstrate significant advantages in TSN networks where propagation delays are less critical than in wide-area networks (WANs).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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