Fig. 5
Comparison of traffic reduction of LRU caching and proxy-tracker. The evaluated ISP consists of a sample of 3 % of peers in the workload, the other peers are in other ISPs in the network. In the result of LRU caching, we plot the upper limit of the confidence interval of the optimistic scenario and the lower limit of the confidence interval of the pessimistic scenario a Etree: 1403 peers inside the ISP b FileList: 1459 peers inside the ISP