NEAT 2018 - Proceedings of the 2018 Workshop on Networking for Emerging Applications and Technologies, Part of SIGCOMM 2018
Doi
Abstract
Latency penalty in Ethernet links beyond 10Gb/s is due to
forward error correction (FEC) blocks. In the worst case a
single-hop penalty approaches the latency of an entire cutthrough
switch. Latency jitter is also introduced, making
latency prediction harder, with large peak to peak variance.
These factors stretch the tail of latency distribution in Rackscale
systems and Data Centers, which in turn degrades
performance of distributed applications. We analyse the underlying
mechanisms, calculate lower bounds and propose
a different approach that would reduce the penalty, allow
control over latency and feedback for application level optimisation.Rudin foundation, Isaac Newton trust, Leverhulme trust, Microsoft researc