Transcript End to end Internet Performance today Prepared by Les Cottrell, SLAC, for the Extending the Reach of Advanced Networking: Special International Workshop Arlington, VA.,

End to end Internet Performance
today
Prepared by Les Cottrell, SLAC, for the
Extending the Reach of Advanced Networking: Special International Workshop
Arlington, VA., April 22, 2004
www.slac.stanford.edu/grp/scs/net/talk03/i2-overview-apr04.ppt
Partially funded by DOE/MICS Field Work Proposal on
Internet End-to-end Performance Monitoring (IEPM), also
supported by IUPAP
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Countries Monitored
Monitor site
Remote site
Monitoring hosts Remote hosts
35 hosts
>105 countries
13 Countries
560 sites
880 hosts
3650pairs
Countries monitored contain
over 90% of the world’s
Internet connected
population
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Loss to world from US
Loss Rate
< 0.1 to 1 %
1 to 2.5 %
2.5 to 5 %
5 to 12 %
> 12 %
2001
Dec-2003
 In 2001 <20% of
 BUT by December 2003
the world’s
It had improved to 77%
population had
Good or
Acceptable Loss
performance
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Trends
C. Asia, Russia, S.E. Europe,
L. America, M. East, China: 46 yrs behind
S.E. Europe, Russia: catching up
Latin Am., Mid East, China: keeping up India, Africa: 7 yrs behind
India, Africa: falling behind
Many institutes in developing world have less performance than a household in N.
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America or Europe
Within Developing
Regions
• In ’80s many Eu countries connected via US
• Today often communications within developing
regions to go via developed region, e.g.
– Rio to Sao Paola goes directly within Brazil
– But Rio to Buenos Aires goes via Florida
• And…
–NIIT – NSC (Rawalpindi – Islamabad) few miles apart,
•Route goes via England!!!!
•Takes longer to go few miles than to SLAC!
• Doubles international link traffic, increases
delays, increases dependence on others
• Within a region can be big differences between
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sites/countries, due to service providers
Loss to Africa (example
of variability)
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Technology Achievement
Index (TAI)
• TAI captures how well a country is creating and diffusing
technology and building a human skills base.
• TAI from UNDP hdr.undp.org/reports/global/2001/en/pdf/techindex.pdf
TAI top 12
Finland
US
Sweden
Japan
Korea Rep. of
Netherlands
UK
Canada
Australia
Singapore
Germany
Norway
0.744
0.733
0.703
0.698
0.666
0.630
0.606
0.589
0.587
0.585
0.583
0.579
US & Canada off-scale
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Summary
• Performance from U.S. & Europe is improving
all over
• Performance to developed countries are orders
of magnitude better than to developing
countries
• Poorer regions 5-10 years behind
• Poorest regions Africa, Caucasus, Central & S.
Asia
• Some regions are:
– catching up (SE Europe, Russia),
– keeping up (Latin America, Mid East, China),
– falling further behind (e.g. India, Africa)
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