Bulk Thruput Measurements-Stanford to Daresbury
Bulk Thruput Measurements | Bulk throughput simulation | Windows vs. streams | Effect of load on RTT and loss | Bulk file transfer measurements
Comparing the various iperf TCP throuhputs between SLAC or Stanford, and Daresbury Lab we get the table to the right. In this table we use various statistical measures to characterize the ditributions. Stdev stands for the standard deviation, the rows labelled with a % are the percentiles, and IQR is the Inter Quartile Range (or the distance between the 25% and the 75%). The column headings indicate the source and destinations, the source is before the > sign and the destination after. SU = elaine.stanford.edu, SUL = loggy.stanford.edu, SLAC = pharlap.slac.stanford.edu, DL= rtlin1.dl.ac.uk The column labelled "Avg DL > US" refers to the averages of the measures made from DL to either Stanford or SLAC. The column labelled "Sce Linux / Solaris" is the ratio of "SUL>D2" over "SU/DL", i.e. the ratio of throughputs from a Stanford Linux client to DL over a Stanford Solaris client to DL. The column labelled "Dst Linux/Solaris" is the ratio of "DL>SUL" over"DL>SU", i.e. the ratio of throughputs from the DL to Stanford Linux server over from DL to a Stanford Solaris server. It can be seen that throughput from DL to the US (Stanford or SLAC) is better than the inverse, especially for the higher percentiles, i.e. the higher measured throughputs.
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Summary of Bulk Throughput Measurements
Created August 25, 2000, last update August 29, 2001.
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