Content area
Abstract
Dynamic, distributed, real-time systems control an environment that varies widely without any time-invariant statistical or deterministic characteristic, are spread across multiple loosely-coupled computers, and must control the environment in a timely manner. In order to ensure that such a system meets its timeliness guarantees, there must be a means to monitor and maintain the quality of service in the system. The QoS manager is a monitoring and diagnosis system for real-time paths, collections of time-constrained and precedence-constrained applications. This dissertation addresses the issues of monitoring communication subpaths of continuous paths and resource usage of computational subpaths, forecasting of latency for continuous paths, and diagnosis of communication subpaths of continuous paths.
