Title :
Dependability and performance measures for the database practitioner
Author :
Teorey, Toby J. ; Ng, Wee Teck
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
Abstract :
We estimate the availability, reliability, and mean transaction time (response time) for repairable database configurations, centralized or distributed, in which each service component is continuously available for repair. Reliability, the probability that the entire transaction can execute properly without failure, is computed as a function of mean time to failure (MTTF) and mean time to repair (MTTR). Mean transaction time in the system is a function of the mean service delay time for the transaction over all components, plus restart delays due to component failures, plus queuing delays for contention. These estimates are potentially applicable to more generalized distributed systems
Keywords :
distributed databases; software reliability; availability; component failures; database practitioner; dependability measures; distributed systems; mean service delay time; mean time to failure; mean time to repair; mean transaction time; performance measures; queuing delays; reliability; repairable database configurations; response time; restart delays; Analytical models; Availability; Computer Society; Delay effects; Delay estimation; Distributed databases; Hardware; Maintenance; Software systems; Transaction databases;
Journal_Title :
Knowledge and Data Engineering, IEEE Transactions on
