[SLAC] [SLAC Pubs and Reports]

SLAC-PUB-7961
Internet Monitoring in the HEP Community

Abstract

The HEP Internet Monitoring Project (known as PingER) attempts to measure the performance of the Internet used by the High Energy Physics Research community and provide an accurate measurement of the end-to-end performance individuals may expect by monitoring the performance between a given monitoring node and remote node pair. This is achieved by monitoring the packet loss and round trip time (RTT) of ICMP Ping packets from 17 monitoring sites around the world to 373 nodes at 267 sites between 1084 monitoring-host-remote-site pairs, involving 27 countries.

This paper details the current work and status of this on-going project. The architecture, methodology and nature of the problem will be reviewed, some trends will be discussed, and the direction of further work will be outlined.

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Notes

  1. The PostScript version of this paper contains larger versions of the figures which appear in-line within the body of the paper. (The text in the inline versions of the graphs is too small to read on screen, and is barely legible in the printed version.)
  2. The PDF version of this document was distilled from a PostScript file most likely created from LaTeX source which used Type 3 fonts. The resultant PDF may be unreadable on the screen at the default viewing magnification (fonts will appear bitmapped, jagged), though the type will be legible at higher magnifications.

    Despite the cosmetic problems resulting from the use Type 3 fonts in the original source file, such PDF files print without problems; likewise, the onscreen text is searchable and selectable.

More Information

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