of techniques and their merits Bob Briscoe Anna Brunstrom Andreas Petlund David Hayes David Ros IngJyh Tsang Stein Gjessing Gorry Fairhurst Carsten Griwodz Michael Welzl ID: 412925
Download Presentation The PPT/PDF document "Reducing Internet Latency: a survey" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
Reducing Internet Latency: a survey of techniques and their merits
Bob Briscoe, Anna Brunstrom, Andreas Petlund, David Hayes, David Ros, Ing-Jyh Tsang, Stein Gjessing, Gorry Fairhurst, Carsten Griwodz, Michael WelzlSlide2
summaryindustry roadmap of techniquesgain vs pain
latency reduction against deployability“A Survey of Latency Reducing Techniques and their Merits”322 referencesavailable via http://riteproject.eu/publications/evolved from BT roadmap work, but repurposeda company tries to prioritise the quick winsan industry also needs to identify hard problems being avoidedSlide3
roadmap around body of survey ISlide4
roadmap around body of survey IISlide5
CDN
TLS-FS
no DSL
interleave
AQM
FEC/TCP
TFO
ECN+AQM
DNS
pre-
fetch
DCTCP
Deploy-
ability
reduction in
completion
time
50%
0
100%
Straightforward
Very Hard or Costly
data
pre-fetch
straighter links
hollow fibre
micro-
wave
sender only
both ends
network only
both ends
& network
all at
once
for example...
QS
RTO-restart
TLP
IW10
case (1a): small (20kB) flow
over
WANSlide6
TLS-FS
DNS
pre-
fetch
reduction in
completion
time
50%
0
100%
Very Hard or Costly
sender only
both ends
network only
both ends& networkall at oncefor example...StraightforwardDeploy-ability
ECN+AQM
DCTCP
datapre-fetchCDN
AQM
straighterlinks
hollow fibre
IW10TFO
RTO-restart
QS
case (1b): small (20kB) flow
over L
ANSlide7
n
o DSL interleave
Deploy-
ability
reduction in
completion
time
50%
0
100%
Very Hard or Costly
data
pre-fetch
sender only
both endsnetwork onlyboth ends& networkall at oncefor example...
CDNStraightforwardDNS pre-fetchAQMECNTLS-FShollow fibremicrowaveDCTCP
IW10
TFOQScase (2a): large flow over WANSlide8
data
pre-fetch
DNS pre-fetch
AQM
ECN
TLS-FS
DCTCP
IW10
TFO
Deploy-
ability
reduction in
completion
time
50%
0100%Very Hard or Costlysender onlyboth endsnetwork onlyboth ends& networkall at
oncefor example...
StraightforwardCDNhollow fibreQScase (2b): large flow over LAN