Pinger and IEPM-BW activity at FNAL

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Pinger and IEPM-BW activity at FNAL

• By Frank Nagy
• FTP/CCF
• Computing Division
• Fermilab

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PingER deployment

• Measurements from
• 37 monitors (Beacons) in 15 countries
• Over 790 remote hosts
• 79 countries
• Over 10000 monitor-remote site pairs
• Measurements go back to Jan-95, FNALs archive
  started at 1997
• Reports on RTT, loss, reachability, jitter,
  reorders, duplicates

• Countries monitored
• Contain 78 of world population
• 99 of online users of Internet
• Mainly AR sites

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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 (ltlt10 FTE)
• Archive site probably about 20 of an FTE

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• 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


WWW
HTTP
SLAC
Ping
Reports Data
Reports Data
Archive
FNAL
Archive
Monitoring
Monitoring
Monitoring
Cache
Monitoring
Remote
1 monitor host remote host pair
Remote
Remote
Remote
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Ping World
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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
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45 days throughput statistics for monitoring
site at UK
and Canada
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