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Modeling and investigation of a primitive file transfer operation

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3 Author(s)
Hurley, R.T. ; Trent Univ., Peterborough, Ont., Canada ; Black, J.P. ; Wong, J.W.

The availability of high-speed networks and the reduced cost of powerful workstations have led to wide-spread use of distributed systems. File transfer is an important operation in a distributed system. It can be considered as a primitive operation in high-level applications such as file migration, process migration and load balancing. The authors develop a performance model for file transfer which consists of three submodels, one for each phase of file transfer. The read phase incorporates prefetching (read-ahead) of file blocks, the write phase incorporates postwriting (write-behind), and the control phase forces the file transfer to be sequential. The throughput of file transfer is obtained analytically using a Markov chain analysis. The validity of the model is assessed using measurement data from a Unix United system. Additional results on the performance of file transfer are also presented

Published in:

Computing and Information, 1992. Proceedings. ICCI '92., Fourth International Conference on

Date of Conference:

28-30 May 1992

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