真实的BitTorrent实验能在簇上进行吗？
Can Realistic BitTorrent Experiments Be Performed on Clusters?
摘要：
网络延迟和数据包丢失被认为是一个重要的要求，现实的评估对等网络协议。专用集群（如Grid'5000）不提供Internet中存在的各种网络延迟和数据包丢失率。然而，与在PlanetLab等测试平台上进行的实验相比，在专用集群上进行的实验是可重复的，因为计算资源不共享。在本文中，我们进行实验，研究网络延迟和数据包丢失对使用BitTorrent下载文件所需时间的影响。在我们的实验中，我们观察到当我们将任何两个对等点之间的往返时间从0 ms增加到400 ms时，下载文件所需的时间增加不到15%，并且数据包丢失率从0%增加到5%。我们的主要结论是，底层网络延迟和数据包丢失对使用BitTorrent下载文件所需的时间有轻微影响。因此，专用集群，如网格'5000可以安全地用于执行现实和可重复的BitTorrent实验。
英文摘要：
Network latency and packet loss are considered to be an important requirement for realistic evaluation of Peer-to-Peer protocols. Dedicated clusters, such as Grid'5000, do not provide the variety of network latency and packet loss rates that can be found in the Internet. However, compared to the experiments performed on testbeds such as PlanetLab, the experiments performed on dedicated clusters are reproducible, as the computational resources are not shared. In this paper, we perform experiments to study the impact of network latency and packet loss on the time required to download a file using BitTorrent. In our experiments, we observe a less than 15% increase on the time required to download a file when we increase the round-trip time between any two peers, from 0 ms to 400 ms, and the packet loss rate, from 0% to 5%. Our main conclusion is that the underlying network latency and packet loss have a marginal impact on the time required to download a file using BitTorrent. Hence, dedicated clusters such as Grid'5000 can be safely used to perform realistic and reproducible BitTorrent experiments.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
