| Publisher | Université de Nantes | ||
|---|---|---|---|
| Format | 558.5KB PDF | Date added | 18 May 2007 |
| Topics | Quality of Service, Linux - Open Source, Linux Server OS | ||
| Downloads | 97 | ||
There has been increasing interest in the real-time community for Quality of Service (QoS) based systems, such as multimedia and telecommunication systems. This paper deals with scheduling components integrating new QoS functionalities under Linux/RTAI (Real-Time Application Interface) [Rta04]. The work relies on a periodic task model which allows occasional deadline violations, together with soft aperiodic tasks. This model discards selected task instances in such a way that the overall performance of the real-time system remains acceptable even in case of overload. The key objective is to exploit the skips in order to minimize the response time of soft aperiodic requests, using the EDL (Earliest Deadline as Late as possible) server, which is a dynamic slack stealing algorithm.
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