Alert Analysis of ABwE Raw available bandwidth data

The data analyzed for alerts is the ABwE exponentially weighted moving average of available bandwidth estimate data for about 40 hosts in 12 countries in N. America (US and Canada), Europe (.ch, .cz, .de, .fr, .it, .nl, .uk) and Asia (.jp, .pk,. su) with bottleneck capacities from 512kbps to 1000Mbps. The data points are measured from SLAC at ~ 1 minute intervals. The anomalous event analysis uses a modified "plateau" algorithm ( ppt, pdf) developed from Automated Event Detection for Active Measurement Systems McGregor A. J and Braun H-W.

Connie Logg and Les Cottrell
Program Logic Manual | Perl pseudo code | Examples of alerts

This page was created from the raw-new ABwE data on Fri Oct 8 11:28:29 2004 for iepm on nettest2 by: version 1.3, 6/8/04 of newrun using threshold=0, statistical_limit = -0.1 and writing data to /nfs/slac/g/net/iepm-bw/bandwidth-tests/eventanalysis/binp-4. The data goes back 8 days to 9/21/2004 18:00 and includes 1 remote hosts.
EVENT SUMMARY