By Pradeep K. Sinha
Distributed working Systems will offer engineers, educators, and researchers with an in-depth knowing of the complete diversity of disbursed working platforms parts. every one bankruptcy addresses de-facto criteria, renowned applied sciences, and layout ideas acceptable to a wide selection of structures. entire with bankruptcy summaries, end-of-chapter workouts and bibliographies, Distributed working Systems concludes with a suite of case reports that offer real-world insights into 4 disbursed working structures.
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Extra info for Distributed Operating Systems: Concepts and Design
The most important design factor that influences the flexibility of a distributed operating system is the model used for designing its kernel. The kernel of an operating system is its central controlling part that provides basic system facilities. It operates in a separate address space that is inaccessible to user processes. It is the only part of an operating system that a user cannot replace or modify. We saw that in the case of a distributed operating system identical kernels are run on all the nodes of the distributed system.
That is, the selection of a machine for executing a job is entirely manual in the case of network operating systems but is automatic in the case of distributed operating systems. With a network operating system, a user is generally required to know the location of a resource to access it, and different sets of system calls have to be used for accessing local and remote resources. On the other hand, users of a distributed operating system need not keep track of the locations of various resources for accessing them, and the same set of system calls is used for accessing both local and remote resources.
A distributed computing system that uses a network operating system is usually referred to as a network system, whereas one that uses a distributed operating system is Sec. 6 • Issues in Designing a Distributed Operating System 19 usually referred to as a true distributed system (or simply a distributed system). In this book, the term distributed system will be used to mean a true distributed system. Note that with the current state of the art in distributed operating systems, it is not possible to design a completely true distributed system.