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Quality of Service (7)
DROPS: Dresden Real-Time Operating System Project - Several RTOSs with QoS focus: much research is done on networking support for continuous-media applications, very few projects tackle related OS issues, such as scheduling and file system support for bounded response time: overview, status, download, installation, use, documentation, papers.
Project Satori - High-Performance distributed object environment emphasizing adaptive end-to-end QoS guarantees. Abstract, components, documents, people, funding.
Roadrunner - One-user, general purpose OS built on a protected memory, POSIX threads RT kernel; full kernel, device drivers, file systems, and network protocols runs in about 200 K RAM; now runs on x86 CPUs but designed for easy portability. [Open source, GPL]
Scout - Free for non-commercial use. Communication-oriented OS focused on network systems: network-attached devices, set-top boxes, and hand-held devices. Fast, customizable, based on new ways to structure and construct OSs: The Path: how data flows between end-points in a system; paths are primary objects to which resources are assigned. Also exploring new compiler technologies for system design and implementation, based on this insight: extensible OSs are worthless if no one can build or extend them.
SUMO - SUpport for Multimedia in Operating systems, Lancaster University: microkernel OS with facilities to support distributed realtime and multimedia applications and ODP-based multimedia distributed application platforms.
Tornado - Object-oriented operating system for large-scale shared-memory multiprocessors. Minimizes data sharing via careful design: often eliminates data sharing even when sharing appears natural. Successor to Hurricane.
Getting Closer to 99.9999%25 Network Uptime - Has information loss become so crucial? Is there real demand for highly available networks? Or are network OEMs, fighting a bad economy, making high-tech versions of detergent ads claiming new and improved? Vaughan-Nichols and Associates. (April 25, 2003)
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