Fig. 6
Comparison of traffic reduction for a cache using LRU and a proxy-tracker. The simulated ISP consists of a sample of 0.3 % of peers in the workload; other peers are outside this ISP. 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: 140 peers inside the ISP b FileList: 146 peers inside the ISP