Service Predictability Vector Plots

In order to provide a rough indication of Internet service predictability, we use a metric developed by the NLANR program, but using our ping measurements. In this we plot the monthly average/peak ratio of packet loss versus throughput as a vector from last month to this month. The results are shown below for 1995 for ESnet nodes, International Nodes, and other North Anerica nodes. In these scatter plots, points towards the top right indicate high predictability. It can be seen that service predictability as seen from SLAC is much higher for ESnet than other nodes.

ESnet: feb95, mar95, apr95, may95, jun95, jul95 aug95 sep95 oct95 nov95 dec95
International: feb95, mar95, apr95, may95, jun95, jul95 aug95 sep95 oct95 nov95 dec95
North_America_East: feb95, mar95, apr95, may95, jun95, jul95 aug95 sep95 oct95 nov95 dec95
North_America_West: feb95, mar95, apr95, may95, jun95, jul95 aug95 sep95 oct95 nov95 dec95

Owner: Les Cottrell and Connie Logg