David Zats, Anand Padmanabha Iyer, Randy H. Katz, Ion Stoica and Amin Vahdat
EECS Department
University of California, Berkeley
Technical Report No. UCB/EECS-2013-113
May 20, 2013
http://www2.eecs.berkeley.edu/Pubs/TechRpts/2013/EECS-2013-113.pdf
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.
BibTeX citation:
@techreport{Zats:EECS-2013-113, Author = {Zats, David and Padmanabha Iyer, Anand and Katz, Randy H. and Stoica, Ion and Vahdat, Amin}, Title = {FastLane: An Agile Congestion Signaling Mechanism for Improving Datacenter Performance}, Institution = {EECS Department, University of California, Berkeley}, Year = {2013}, Month = {May}, URL = {http://www2.eecs.berkeley.edu/Pubs/TechRpts/2013/EECS-2013-113.html}, Number = {UCB/EECS-2013-113}, 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.} }
EndNote citation:
%0 Report %A Zats, David %A Padmanabha Iyer, Anand %A Katz, Randy H. %A Stoica, Ion %A Vahdat, Amin %T FastLane: An Agile Congestion Signaling Mechanism for Improving Datacenter Performance %I EECS Department, University of California, Berkeley %D 2013 %8 May 20 %@ UCB/EECS-2013-113 %U http://www2.eecs.berkeley.edu/Pubs/TechRpts/2013/EECS-2013-113.html %F Zats:EECS-2013-113