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PingER performance to Bangladesh. Prepared by Les Cottrell, SLAC for Prof. Hilda Cerdeira May 27, 2004. Partially funded by DOE/MICS Field Work Proposal on Internet End-to-end Performance Monitoring (IEPM), also supported by IUPAP. Methodology. Use ubiquitous ping

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PingER performance to Bangladesh

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Pinger performance to bangladesh l.jpg

PingER performance to Bangladesh

Prepared by Les Cottrell, SLAC

for Prof. Hilda Cerdeira

May 27, 2004

Partially funded by DOE/MICS Field Work Proposal on Internet End-to-end Performance Monitoring (IEPM), also supported by IUPAP


Methodology l.jpg

Methodology

  • Use ubiquitous ping

  • Each 30 minutes from monitoring site to target :

    • 1 ping to prime caches

    • by default send11x100Byte pkts followed by 10x1000Byte pkts

      • Low network impact + no software to install / configure / maintain at remote sites + no passwords / accounts needed = good for developing sites / regions

  • Record loss & RTT, (+ reorders, duplicates)

  • Derive throughput, jitter, unreachability …


Architecture l.jpg

Architecture

  • Hierarchical vs. full mesh

WWW

HTTP

Ping

SLAC

Reports & Data

Archive

FNAL

Archive

~35

Monitoring

Monitoring

Monitoring

Cache

Monitoring

Remote

1 monitor host

remote host pair

Remote

Remote

Remote

~550


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Regions Monitored

  • Recent added NIIT PK as monitoring site

  • White = no host monitored in country

  • Colors indicate regions

  • Also have affinity groups (VOs), e.g. AMPATH, Silk Road, CMS, XIWT and can select multiple groups

Monitoring sites in ~ 35 countries


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Bangladesh

RTT & Loss SLAC to www.ru.ac.bd Feb – May ‘04

RTT ms

Loss


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Indian sub-continent

Derived throughput = packet size/(RTT * sqrt(loss))


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World

  • Log scale so straight line shows exponential improvement

  • Indian sub-continent 7 years behind Europe

  • Falling behind


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More Information

  • Contact cottrell@slac.stanford.edu to request monitoring of a host/site in Bangladesh

    • Requirements for host being monitored

      • http://www.slac.stanford.edu/comp/net/wan-req.html

  • PingER

    • http://www-iepm.slac.stanford.edu/pinger/

  • ICFA/SCIC Monitoring Report Jan 2004

    • http://www.slac.stanford.edu/xorg/icfa/icfa-net-paper-jan04/


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