Friedhelm Wolf

Learn More
—Developing large-scale distributed real-time and embedded (DRE) systems is hard in part due to complex deployment and configuration issues involved in satisfying multiple quality for service (QoS) properties, such as real-timeliness and fault tolerance. Effective deployment requires developing and evaluating a range of task allocation algorithms that(More)
Although component middleware is increasingly used to develop distributed, real-time and embedded (DRE) systems , it poses new fault tolerance challenges, such as the need for efficient synchronization of internal component state, failure correlation across groups of components, and configuration of fault-tolerance properties at the component granularity(More)
Keywords: Component-based systems Real-time and fault-tolerance Failover units a b s t r a c t Although component middleware is increasingly used to develop distributed, real-time and embedded (DRE) systems, it poses new fault-tolerance challenges, such as the need for efficient synchronization of internal component state, failure correlation across groups(More)
To Jesus Christ, who not only laid the foundations of western civilization and research through revealing the nature of God the father, but also made me the person I am. ii ACKNOWLEDGMENTS I'm indebted to the GI department at the European Space Operations Centre and especially to Dr. James Eggleston, who not only greatly influenced the direction of my(More)
increasingly popular among researchers while at the same time groups like IEEE, ISO, or ETSI prepare their market introduction by working on standards documents , which commercial products will become available in 5 to 10 years. One widely acknowledged issue with IVC systems are the security and privacy problems that occur in such cooperative and ubiquitous(More)
Ad hoc deployment and configuration (D&C) of fault-tolerance mechanisms (e.g., replica-host mapping and failover ordering of replicas) can lead to unacceptable response times, overloads, and low-availability for soft real-time applications. This paper describes how our quality-of-service (QoS)-enabled middleware called DeCoRAM (Deployment and Configuration(More)
  • 1