Hi, all,

I'll be presenting a tutorial on latency at Sigcomm 2017 in Los Angeles, and invite you all to consider attending.

Please forward this notice as useful.

(COI Disclaimer: Sigcomm tutorial presenters are unpaid, FWIW)

Joe

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ACM SIGCOMM 2017Tutorial
Understanding Latency - A Root Cost and Mitigation Approach
Joe Touch, USC/ISI
Call For Participation - Los Angeles, CA, Friday August 25, 2017

“Time is fleeting,” it has been said. Time delay, or latency, is the one metric that drives most others. It defines what it means to be fast, and limits us to what is fast enough.

Latency has always been a key part of network performance, but recently it has been elevated to a primary focus for electronic traders, search engines, name servers, data centers, and home and network routers. Increases in network bandwidth, router forwarding speed, and end system computational resources have helped bring latency to the forefront as a primary concern. New protocols are emerging to address latency as a primary issue, including Delay Tolerant Networking (DTN) and bufferbloat mitigations.

This tutorial presents a comprehensive exploration of the impact of latency on communication. It explores time as a budget to be spent, over-spent, rebated, and conserved. We explore the root causes of latency: generating data, transmitting it, processing it, and the impact of resource sharing through multiplexing and aggregation, as well as corresponding ways to mitigate each of these causes. We also explore ways to mask latency that cannot be reduced and to avoid incurring its cost in the first place. This tutorial provides examples of real system design and implementations, as well as exploring several key case studies to provide practical experience that attendees can immediately apply to their own systems.