Dummynet: a simple approach to the evaluation of network protocols
ACM SIGCOMM Computer Communication Review
Dynamic parallel access to replicated content in the internet
IEEE/ACM Transactions on Networking (TON)
PFTPD: An FTP Proxy System to Assure the Freshness of Files
ICDCSW '02 Proceedings of the 22nd International Conference on Distributed Computing Systems
A Parallel Downloading Method of Coping with Variable Bandwidth
ICDCSW '03 Proceedings of the 23rd International Conference on Distributed Computing Systems
MMSys '11 Proceedings of the second annual ACM conference on Multimedia systems
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Although the traditional downloading programs usuallyselect one server and retrieves a file from the server, it ismore practical to select more servers (e.g. mirror servers)and to fetch different parts of a file from the servers in parallelfrom the point of view of downloading time and fault-toleranceof network service. We have already proposed anadaptive parallel downloading method which enables usto stabilize and accelerate the downloading time even inthe network environments with various bandwidth. Since wefound a little room for improvement in the method, this paperdescribes an improved method. The new method has thefollowing features: (1) independence of the number of mirrorservers and (2) introduction of request pipelining intoparallel downloading. Based on practical experiments fromthe viewpoint of downloading speed and stability of downloadingtime, we confirm that the improved method is moreeffective than the previous methods. There is a possibilitythat the improved method will become one of the mostimportant network control technologies for network assurance.