Measurement-Based Analysis of Error Latency
IEEE Transactions on Computers
Software-Based Adaptive and Concurrent Self-Testing in Programmable Network Interfaces
ICPADS '06 Proceedings of the 12th International Conference on Parallel and Distributed Systems - Volume 1
Software-Based Failure Detection and Recovery in Programmable Network Interfaces
IEEE Transactions on Parallel and Distributed Systems
A root cause localization model for large scale systems
HotDep'05 Proceedings of the First conference on Hot topics in system dependability
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A key problem in today's complex software systems is software failure detection and isolation given that most software failures are only partial, and if efficiently diagnosed, isolated and recovered, could avert a total outage. The probe detects failed software components in a running software system by requesting service, or a certain level of service, from a set of functions, modules and/or subsystems (target) and checking the response to the request. The objective is to localize the failure only up to the level of a target, while, achieving a high degree of efficiency and confidence in the process. Targets can be identified at different levels or layers in the software. The choice is based on the granularity of fault detection that is desired, taken in consideration with the level at which recovery is implemented. The implementation of the probe system is made self testing against any single failure in its operational components, using the idea of a null probe. The probe system has been designed, taking advantage of the latency characteristics of errors, to provide a low-overhead mechanism. The ideas are implementable in either a single or multiple computer system.