About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
CMG 1985
Conference paper
Distributed Concurrency Control Analysis for Data Sharing
Abstract
The performance of multiple systems sharing a common data base with distributed locking is analyzed. The analysis is based on traces from large mainframe systems running IBM's IMS database management system. A methodology to synthesize a multi-system IMS lock trace from single-system traces is presented. The multi-system traces are used in trace driven simulations to predict lock contention in a multi-system environment and to generate workload parameters. These parameters are used in event-driven simulation models to examine the overall performance of two-system and four-system data sharing, and to determine the performance impact of various system parameters and design alternatives. While performance results are presented for realistic system parameters, the emphasis is on the methodology, analysis technique and on examining the factors that affect multi-system performance.