A unified framework for managing different resources with QoS guarantees

This paper describes ongoing research activities aimed at developing a unified framework by which a general pur pose operative system is able to support applications with Quality of Service requirements. The work is focused on a feedback based dynamic management of the resources re quired by an application, where each resource is handled through the use of a Resource Reservation paradigm. This allows applications to share the access to a resource by specifying the fraction of usage, where such fractions are dynamically adapted by the system on the basis of observa tions made on the hosted activities. Research in this area comprises development of both a theoretical framework for modelling applications and analysing the impact of control theoretic feedback strategies to the QoS experienced by applications, and a prototype im plementation of an architecture with the ability of providing the needed functionality on a Linux Operative System.