An improved strategy of piece selection in P2P

On the basis of the analysis of the running pattern in the P2P file sharing system and the research of piece selection strategy in the BitTorrent system, presents a new piece selection strategy that records information of tables by using dynamic piece markers created. This strategy can keep the consistency of all pieces selection strategy by using Rarest First strategy in the first piece selection and in the same time can make query location progress not in the diffuse way and improves research location efficiency radically.