Path name resolution method providing fixed speed of file access

Details Path name resolution method providing fixed speed of file access Path name resolution method providing fixed speed of file access

1994-03-30

1995-07-25

Black, Thomas G.

Boots, shoes, and leggings

395200, 395800, 3642824, 3642844, 3649747, 364DIG1, 364DIG2, G06F 1516, G06F 1730

Patent

active

054370299

ABSTRACT:
A method of path name resolution is provided for use in a network of data processing systems, whereby each user of a system can specify that a particular file, located at some other system in the network, is to be accessed using a local search mode of path name resolution, providing high access performance with fixed access speed. Each of the directories of the path name of that file which are resident in other systems of the network are then replicated on disk at the user's system, each replicated directory including a counter which is initialized to 1. Each subsequent request by a user of that system for applying the local accessing mode to the same path name results in each of the counters being incremented by 1, while each request for returning the resolution mode to the conventional network-accessing mode of path name resolution results in each of the counters being decremented by 1, with a replicated directory being deleted when its counter value reaches zero.

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Deitz et al., "CRegs: A New Kind of Memory For Referencing Arrays and Pointers", Proceedings. Supercomputing '88, Orlando, Fla., 14-18 Nov. 1988, pp. 360-367.
Gopal et al., "Analysis of a Class of Distributed Directory Algorithms", IEEE INFOCOM '89. The Conference on Computer Communications. Proceedings of the Eighth Annual Joint Conference of the IEEE Computer and Communications Societies, Ottawa, Canada, 23-27 Apr. 1989, pp. 293-302.

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