Reducing the Latency-Tail of Short-Lived Flows: Adding Forward Error Correction in Data Centers

Reducing the Latency-Tail of Short-Lived Flows: Adding Forward Error Correction in Data Centers

Abstract

TCP handles packet loss in the network by retransmitting lost packets, which in turn increases latency. Many connections in data centers are short-lived and consist only of a few packets (e.g., RPCs). Such connections suffer disproportionately from packet retransmissions. We address this issue by introducing a new transport layer protocol called ATP: ATP uses ample forward error correction at the beginning of a connection, allowing short-lived flows to recover from packet loss without retransmissions – but at the same time not congesting long-lived flows. Our experiments show that in an environment with background traffic, the latency’s 99th percentile can be reduced by a fa

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Authors
  • Foerster, Klaus-Tycho
  • Jaeger, Demian
  • Stolz, David
  • Wattenhofer, Roger
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Supplemental Material
Shortfacts
Category
Paper in Conference Proceedings or in Workshop Proceedings (Paper)
Event Title
15th IEEE International Symposium on Network Computing and Applications (NCA 2016)
Divisions
Communication Technologies
Subjects
Rechnerperipherie, Datenkommunikationshardware
Event Location
Cambridge, USA
Event Type
Conference
Event Dates
Oct 31 - Nov 02 2016
Date
November 2016
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