Interplay Between Priority Queues and Controlled Delay in Programmable Data Planes

Research output: Contribution to book/conference proceedings/anthology/reportConference contributionContributedpeer-review

Abstract

The Tactile Internet needs to support multiple modalities, including haptic data simultaneously, to enable human and robot interaction in perceived real-time. Compared to video and audio, haptic data streams require an even lower delay and more shallow packet loss, which is a challenge for the underlying networks originally designed to support high bandwidths by having a large queue to buffer packets. This raises the need to study queuing management for different data streams. We examine the performance of CoDel++, which combines the well-known Controlled Delay (CoDel) protocol and Priority Queues. We leverage programmable data planes, which can be programmed with P4. Evaluation results show that CoDel++ produces superior results for high-priority data streams, i.e., reducing latency by at least 60% and packet loss by half compared to individual exploitation of Priority Queuing or CoDel individually.

Details

Original languageEnglish
Title of host publication2023 18th Wireless On-Demand Network Systems and Services Conference, WONS 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages64-71
Number of pages8
ISBN (electronic)978-3-903176-56-0
Publication statusPublished - 2023
Peer-reviewedYes

Conference

Title18th Wireless On-Demand Network Systems and Services Conference, WONS 2023
Duration30 January - 1 February 2023
CityMadonna di Campiglio
CountryItaly

External IDs

ORCID /0000-0001-7008-1537/work/158767454

Keywords

Keywords

  • Active Queue Management, Buffer Bloat, Congestion Control, P4, Tactile Internet