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Providing the X.500 directory user with QOS information

1994; Association for Computing Machinery; Volume: 24; Issue: 3 Linguagem: Inglês

10.1145/193285.193292

1943-5819

P. Barker,

Business Process Modeling and Analysis

This paper describes some work which helps users of the X.500 directory to understand the unevenness of quality of service (QOS) concomitant with a widely distributed directory. In particular a user may see highly variant response times and availability of information for different parts of the directory.The paper discusses, and dismisses, two possible sources of QOS information. I use a third approach whereby a directory user interface maintains a record of response times and information availability and uses this database to provide a user with feedback about those aspects of the service. The DE user interface has been modified to incorporate this facility. The technique used also provides directory managers with a view of directory performance from a user's perspective.The work described has been partly funded by the PARADISE projects, through the European COSINE project and VALUE programme.