Evaluating BBRv2 on the Dropbox Edge Network

08/18/2020
by   Alexey Ivanov, et al.
0

Nowadays, loss-based TCP congestion controls in general and CUBIC specifically became the de facto standard for the Internet. BBR congestion control challenges the loss-based approach by modeling the network based on estimated bandwidth and round-trip time. At Dropbox, we've been using BBRv1 since 2017 and are accustomed to its pros and cons. BBRv2 introduces a set of improvements to network modeling (explicit loss targets and inflight limits) and fairness (differential probing and headroom for new flows.) In this paper, we go over experimental data gathered on the Dropbox Edge Network. We compare BBRv2 to BBRv1 and CUBIC showing that BBRv2 is a definite improvement over both of them. We also show that BBRv2 experimental results match its theoretical design principles.

READ FULL TEXT

page 1

page 2

page 3

page 4

research
01/09/2018

Towards Stability Analysis of Data Transport Mechanisms: a Fluid Model and an Application

The Transmission Control Protocol (TCP) utilizes congestion avoidance an...
research
03/09/2019

Fifty Shades of Congestion Control: A Performance and Interactions Evaluation

Congestion control algorithms are crucial in achieving high utilization ...
research
07/02/2021

Video Conferencing and Flow-Rate Fairness: A First Look at Zoom and the Impact of Flow-Queuing AQM

Congestion control is essential for the stability of the Internet and th...
research
05/17/2023

Friendliness between AIMD Algorithms

This paper aims to provide a robust grounding for the additive increase ...
research
01/19/2021

Improving DCTCP/Prague Congestion Control Responsiveness

This report explains how DCTCP introduces 1–2 rounds of unnecessary lag,...
research
07/19/2023

Internet Congestion Control Benchmarking

How do we assess a new Internet congestion control (CC) design? How do w...
research
07/07/2021

BBRv2+:Towards Balancing Aggressiveness and Fairness with Delay-based Bandwidth Probing

BBRv2, proposed by Google, aims at addressing BBR's shortcomings of unfa...

Please sign up or login with your details

Forgot password? Click here to reset