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Accession Number ADA587047
Title FastLane: An Agile Congestion Signaling Mechanism for Improving Datacenter Performance.
Publication Date May 2013
Media Count 17p
Personal Author A. Vahdat A. P. Iyer D. Zats I. Stoica R. H. Katz
Abstract The drive towards richer, more interactive content places increasingly stringent latency requirements on datacenters. A critical component of meeting these is ensuring that the network responds agilely to congestion, bounding network latency and improving high-percentile flow completion times. We propose a new approach to rapidly detecting and responding to congestion. We introduce FastLane, a congestion signaling mechanism that allows senders to respond more quickly. By delivering signals to senders with high probability and low latency, FastLane allows them to retransmit packets sooner, avoiding resource-wasting timeouts. It also enables senders to make more informed decisions by differentiating between out-of-order delivery and packet loss. We demonstrate through simulation and implementation that FastLane reduces high-percentile flow completion times by over 80% by effectively managing congestion hot-spots. These benefits come at minimal cost-FastLane consumes no more than 2% of bandwidth and 5% of buffers.
Keywords Congestion
Decision making
Network latency

Source Agency Non Paid ADAS
NTIS Subject Category 72E - Operations Research
62 - Computers, Control & Information Theory
57U - Public Health & Industrial Medicine
41I - Job Environment
Corporate Author California Univ., Berkeley. Dept. of Electrical Engineering and Computer Science.
Document Type Technical report
Title Note Technical rept.
NTIS Issue Number 1405
Contract Number FA8750-12-2-0331

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