Sophia: An information plane for networked systems

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Sophia: An information plane for networked systems (2004)

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by Mike Wawrzoniak , Larry Peterson , Timothy Roscoe

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97 - 7 self

BibTeX

@MISC{Wawrzoniak04sophia:an,
    author = {Mike Wawrzoniak and Larry Peterson and Timothy Roscoe},
    title = {Sophia: An information plane for networked systems},
    year = {2004}
}

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Abstract

This paper motivates and describes an example network Information Plane, called Sophia, currently deployed on PlanetLab. Sophia is a distributed system that collects, stores, propagates, aggregates, and reacts to observations about the network’s current conditions. Sophia’s approach is novel: it can be viewed as a multi-user distributed expression evaluator in which sensors and actuators form the ground terms, and statements take on the complete expressiveness of a logic language like Prolog. This paper argues that this approach has several advantages in managing and controlling a complex, federated, and evolving network: (1) a declarative logic language provides a natural way to express the kinds of statements that are common to this application domain, through temporal and positional logic rules, facts and expressions; and (2) distributed evaluation of such logic expressions provides many opportunities for performance optimization yielding an efficient system.

Keyphrases

networked system information plane logic expression expression evaluator complete expressiveness ground term network current condition application domain positional logic rule performance optimization many opportunity example network information plane efficient system declarative logic language sophia approach distributed system several advantage natural way logic language

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