Productivity Engineering in the UNIX Environment. Object Management in Local Distributed Systems.

摘要

Resource management is a central issue in operating systems design; it is even more critical in distributed systems, because of the physical distribution of the resources, and thus the natural redundancy and the possibility of partial failures. In this paper, we study the resource management and sharing problems in distributed systems. After setting up a model for resources management that enables us to study and compare the different approaches, we survey the existing distributed systems and attempt to taxonomize the research results so far. Based on this investigation, we propose a new approach to resource management, which we call global object management. A logically centralized system-wide manager acts as a coordinator between different parts of the system, and is responsible for managing the top level, sharable resources in the distributed environment and making them available to the users. We argue that this approach greatly enhances system resource sharing by combining the semantic simplicity of centralized management and the reliability and availability of distributed management, and offers a number of advantages over the existing techniques. (kr)