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Quality of Service (QoS) is an issue of ever growing importance as the world becomes ever more reliant on networks controlled by computers. QoS is of maximum importance as network traffic rises and networks grow congested. With streaming media being delivered over networks, it is even more vital to maintain reliability and high quality in transmission. QoS issues can only grow larger in time. Even when/where network connections and protocols are very reliable and of high quality, operating systems (OSs) can introduce delays and errors in transmission. Thus network operating systems (NOSs) must also maintain Quality of Service guarantees, so the overall network continues to run reliably.
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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. 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. Project Satori - High-Performance distributed object environment emphasizing adaptive end-to-end QoS guarantees. Abstract, components, documents, people, funding. 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. Getting Closer to 99.9999% 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.
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