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PingER performance to Bangladesh

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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  1. 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

  2. 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 …

  3. 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

  4. 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

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

  6. Indian sub-continent Derived throughput = packet size/(RTT * sqrt(loss))

  7. World • Log scale so straight line shows exponential improvement • Indian sub-continent 7 years behind Europe • Falling behind

  8. 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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