4.5. Download performance
In this section, we examine the efficiency (downloadspeed) and the effectiveness (number of available files)of downloading. Figure 6 presents the results of a two-week experiment in which the average download bandwidth of 54,845 peers was measured. To obtain these measurements, our Hunt script followed the first 108 files that where added to Suprnova on March 10, 2004. The figure also shows the Cumulative Distribution Function (CDF) of the fraction of peers with a certain download speed. It turns out that 90% of the peers had a download speed below 520 kbps;