Performance analysis of static locking in replicated distributed database systems

A technique that combines simulation and analysis is used to describe the impact of deadlock and evaluate the performance of a replicated distributed database with both shared and exclusive locks. The proposed approach is an extension of a technique presented by S.-C. Shyu and V.O.K. Li (1990). The authors use the proposed method to evaluate the effect of the number of data items, the number of data items accessed by each transaction, the ratio of read operations on transaction response time, and the number of replications. The results show the importance of considering both shared and exclusive lock requests, the deadlock probabilities and the number of replications of the database for response time evaluations