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Trouble Shooting Network Performance for Production Science Data Grids
Presented by Warren Matthews at CHEP’03, San Diego March 24-28, 2003
The vision of science grids allocating resources to analyze huge quantities of HENP data clearly depends on reliable network performance. Tools developed at SLAC in conjunction with the Internet2 PIPES project will help to ensure this. In this talk, these tools will be discussed and the procedure for publishing performance data, in particular using the Globus toolkit's MDS and web services will be reviewed. The subsequent analysis and trouble-shooting methodology will be discussed with real world examples from the particle physics data grid (PPDG) and the European data grid (EDG).
12% pkt loss
2003 3 18 6 1 41 1.61 1.601 1.62 0
03/20/2003 20:13:46 ALARM pcgiga throughput=305.224 ctresh=512.95 athresh=312.91
03/20/2003 20:13:48 TRACE no change in route detected
03/20/2003 20:16:07 CALM Throughput within acceptable limits. ALARM CANCELLED
This talk made possible by the IEPM team at SLAC (Les Cottrell, Connie Logg, Jiri Navratil, Jerrod Williams, Fabrizio Coccetti), and the many developers and maintainers around the world.