NDLI: Adaptive QoS Management in Dynamically Reconfigurable Real-Time Databases

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Adaptive QoS Management in Dynamically Reconfigurable Real-Time Databases

Content Provider	Semantic Scholar
Author	Nilsson, Daniel Norin, Henrik
Copyright Year	2005
Abstract	During the last years the need for real-time database services has increased due to the growing number of data-intensive applications needing to enforce real-time constraints. The COMponent-based Embedded real-Time database (COMET) is a real-time database developed to meet these demands. COMET is developed using the AspeCtual COmponent-based Real-time system Development (ACCORD) design method, and consists of a number of components and aspects, which can be composed into a number of different configurations depending on system demands, e.g., Quality of Service (QoS) management can be used in unpredictable environments. In embedded systems with requirementson high up-time it may not be possible to temporarily shut down the system for reconfiguration. Instead it is desirable to enable dynamic reconfiguration of the system, exchanging components during run-time. This in turn sets demands on the feedback control of the system to adjust to these new conditions, since a new time variant system has been created. This thesis project implements improvements in COMET to create a more stable database suitable for further development. A mechanism for dynamic reconfiguration of COMET is implemented, thus, enabling components and aspects to be swapped during run-time. Adaptive feedback control algorithms are also implemented in order to better adjust to workload variations and database reconfiguration.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.ida.liu.se/~meham/supervision/Nilsson05Adaptive.pdf
Alternate Webpage(s)	http://www.diva-portal.org/smash/get/diva2:20142/FULLTEXT01.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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