Pinger and IEPM-BW activity at FNAL By Frank Nagy FTP/CCF Computing Division Fermilab

Measurements from –37 monitors (Beacons) in 15 countries –Over 790 remote hosts –79+ countries –Over monitor-remote site pairs –Measurements go back to Jan-95, FNAL’s archive started at 1997 –Reports on RTT, loss, reachability, jitter, reorders, duplicates … PingER deployment Countries monitored –Contain 78% of world population –99% of online users of Internet –Mainly A&R sites

PingER Measurement Methodology Measurement host admin choose remote hosts of interest –sends 21 pings each 30 mins to each chosen remote host –Records RTT, loss, jitter, unreachable, out of order … –Records data in local cache Archive host gathers data from measurements hosts regularly (at least daily) –Archives, analyzes and generates reports from data –Make reports and data publicly available via the web Requirements: –Remote host: need a host accessible to pings, and a contact in case host does not respond (almost no effort) –Monitoring host: a low end host to make measurements, file space for cache, admin to install toolkit, choose remote hosts, build configuration file, respond to archives in case unable to get data & keep it running (<<10% FTE) –Archive site: probably about 20% of an FTE

Archive Monitoring Remote FNAL Reports & Data Cache Ping Archive WWW Monitoring Reports & Data Monitoring HTTP 1 monitor host remote host pair SLAC Uses existing ubiquitous Internet ping infrastructure, no tools to install Hierarchical vs. full mesh, each monitoring site chooses remote sites Lightweight – low network impact (100bits/s/path) – no special machines – trivial to add monitored sites Measurement Architecture

Ping World

Countries in PingER DataBase* Georgia Germany Ghana Greece Guatemala Hungary Iceland India Indonesia Ireland Iran Israel Italy Japan Jordan Kazakhstan Korea, Republic Of Latvia Lithuania Macedonia Malaysia Mexico Mongolia Moldova, Republic of Albania Argentina Armenia Australia Austria Azerbaijan Bangladesh Belarus Belgium Brazil Bulgaria Canada China Chile Colombia Costa Rica Croatia Cuba CZ DK Egypt Estonia Finland France Netherlands Nigeria Norway New Zealand Pakistan Peru Poland Portugal Puerto Rico Romania Russia Singapore Slovakia Slovenia South Africa Spain Sweden Switzerland Taiwan Thailand Turkey Uganda Ukraine United Kingdom US Uruguay Uzbekistan Venezuela Viet Nam Yugoslavia * Means we monitored a host in this country at one time or another

45 days throughput statistics for monitoring site at UK and Canada