We are surrounded by ever more dependable systems, such us driving assistance systems from the automotive domain or life-supporting systems from the medical domain. Due to their increasing complexity, not only the development of but also the quality assurance for such systems are becoming increasingly difficult. They may cause various degrees of harm to their environment. Hence, in order to red...

The complex interactions between faults, errors, failures and fault handling mechanisms can be studied via injection experiments. This paper presents an investigation of both fault and error injection techniques for emulating software faults. For evaluation, 1600 software faults and 5400 time-triggered errors were injected into an embedded real-time system. The cost-related results are: (i) the...

An analysis of the failure statistics of a commercially available fault-tolerant system shows that administration and software are the major contributors to failure. Various approaches to software fault-tolerance are then discussed notably process-pairs, transactions and reliable storage. It is pointed out that faults in production software are often (transient) and that a transaction mechanism...

Petri nets are useful for modelling a variety of asynchronous and concurrent systems, such as automated manufacturing, computer fault tolerant systems, and communication networks. This study employs an airbag inflator system as an example to demonstrate a Petri net approach to failure analysis. This paper uses Petri nets to study minimum cut sets finding, marking transfer, and dynamic behaviour...

software fault-tolerance, process replication failure masking, continuous availability, topology The ambition of fault-tolerant systems is to provide application transparent fault-tolerance at the same performance as a non-fault-tolerant system. Somersault is a library for developing distributed fault-tolerant software systems that comes close to achieving both goals. We describe Somersault and...

With the continuous development of huge systems, dependence on the system is continually increasing. The failure of such systems will cause huge losses. The reason for system failure is often unclear, so that inconsistency and uncertainty between fault data will appear. In the actual application process, there is a process of change. If it is possible to predict the failure probability from the...

Most fault adaptive control research addresses the preservation of system stability or functionality in the presence of a specific failure (fault). This paper examines the fault adaptive control problem for a generic class of incipient failure modes, which do not initially affect system stability, but will eventually cause a catastrophic failure to occur. This risk of catastrophic failure due a...

Abstract: This paper presents a discrete software reliability growth model (SRGM) and introduces the concept of two types of imperfect debugging during software fault removal phenomenon with Logistic Fault removal rate. Most of the discrete SRGMs discussed in the literature seldom differentiate between the failure observation and fault removal processes. In real software development environment...

In a grid environment there are thousands of resources, services and applications that need to interact in order to make possible the use of the grid [1] as an execution platform. Since these elements are extremely heterogeneous, volatile and dynamic, there are many failure possibilities, including not only independent failures of each element, but also those resulting from interactions between...