What is it about?
This work shows that the latency difference between load-balanced paths (called latency imbalance), previously deemed insignificant, is now prevalent from the perspective of the cloud and affects various latency-sensitive applications. In this work, I present the first large-scale measurement study of latency imbalance from a cloud-centric view. Using public clouds around the globe, I measure latency imbalance both between data centers in the cloud and from the cloud to the public Internet.
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Why is it important?
Our findings confirmed that latency imbalance is both significant and prevalent on the Internet from a cloud-centric view. Latency imbalance further impacts many latency-sensitive applications, e.g., delay-based geolocation, NTP and VoIP.
Perspectives
This paper studies an under-explored problem about load-balanced paths. This problem affects many latency-sensitive applications. I hope this paper could lead more researchers to focus on the performance difference between load-balanced paths and find solutions to the problem.
Yibo Pi
University of Michigan
Read the Original
This page is a summary of: Latency Imbalance Among Internet Load-Balanced Paths, Proceedings of the ACM on Measurement and Analysis of Computing Systems, June 2020, ACM (Association for Computing Machinery),
DOI: 10.1145/3392150.
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