Validating the Sharing Behavior and Latency Characteristics of the L4S Architecture

Oljira, Dejene BoruKarlstads universitet,Institutionen för matematik och datavetenskap (from 2013),DISCO, Computer Networking (author)

Internet services such as virtual reality, interactive cloud applications, and online gaming, have a strict quality of service requirements (e.g., low-latency). However, the current Internet is not able to satisfy the low-latency requirements of these applications. This as the standard TCP induces high queuing delays when used by capacity-seeking traffic, which in turn results in unpredictable latency. The Low Latency Low Loss Scalable throughput (L4S) architecture aims to address this problem by combining scalable congestion controls (e.g., DCTCP) with early congestion signaling from the network. For incremental deployment, the L4S architecture defines a Dual Queue Coupled AQM that enables the safe coexistence of scalable and classic (e.g., Reno, Cubic, etc.) flows on the global Internet. The DualPI2 AQM is a Linux kernel implementation of a Dual Queue Coupled AQM. In this paper, we benchmark the DualPI2 AQM to validate experimental result(s) reported in previous works that demonstrate the coexistence of scalable and classic congestion controls, and its low-latency service. Our results validate the coexistence of scalable and classic flows using DualPI2 single queue AQM while the result with dual queue shows neither rate nor window fairness between the flows.

Grinnemo, Karl-Johan,1968-Karlstads universitet,Institutionen för matematik och datavetenskap (from 2013),DISCO, Computer Networking(Swepub:kau)karlgrin (author)
Brunström, Anna,1967-Karlstads universitet,Institutionen för matematik och datavetenskap (from 2013),DISCO, Computer Networking(Swepub:kau)annabrun (author)
Taheri, JavidKarlstads universitet,Institutionen för matematik och datavetenskap (from 2013),DISCO, Computer Networking(Swepub:kau)javitahe (author)
Karlstads universitetInstitutionen för matematik och datavetenskap (from 2013) (creator_code:org_t)

By the author/editor: Oljira, Dejene B ...; Grinnemo, Karl-J ...; Brunström, Anna, ...; Taheri, Javid

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