Sensitivity of Real-Time Operating Systems to Transient Faults: A case study for MicroC kernel
Basarab Nicolescu, N. Ignat, Yvon Savaria, Gabriela Nicolescu · ESA SP · 2005
This paper explores sensitivity of RTOS kernels in safety-critical systems. We characterize and analyze the consequences of transient faults on key components of the MicroC kernel, a popular RTOS. We specifically focus on its task scheduling and context switching modules. Classes of fault syndromes specific to safety-critical real-time systems are identified. Results reported in this paper demonstrate that 34% of faults led to scheduling dysfunctions. In addition 17% of faults results in system crashes. This represents an important fraction of faults that cannot be ignored during the design phase of safety-critical applications running under an RTOS.