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The Pebble Component-Based Operating System

By Eran Gabber, Eran Gabber, Christopher Small, Christopher Small, John Bruno, John Bruno, José Brustoloni, José Brustoloni and Avi Silberschatz and Avi Silberschatz


Pebble is a new operating system designed with the goals of flexibility, safety, and performance. Its architecture combines a set of features heretofore not found in a single system, including (a) a minimal privileged mode nucleus, responsible for switching between protection domains, (b) implementation of all system services by replaceable user-level components with minimal privileges (including the scheduler and all device drivers) that run in separate protection domains enforced by hardware memory protection, and (c) generation of code specialized for each possible cross-domain transfer. The combination of these techniques results in a system with extremely inexpensive cross-domain calls that makes it well-suited for both efficiently specializing the operating system on a per-application basis and supporting modern component-based applications. 1 Introduction A new operating system project should address a real problem that is not currently being addressed; constructing yet anothe..

Year: 1999
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