Integrated concurrency-coherency controls for multisystem data sharing

• Published in: IEEE transactions on software engineering Vol. 15; no. 4; pp. 437 - 448
• Main Authors: Dias, D.M., Iyer, B.R., Robinson, J.T., Yu, P.S.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-04-1989; Institute of Electrical and Electronics Engineers; IEEE Computer Society
• Subjects: Access protocols; Algorithms; Applied sciences; Centralized control; Computer buffers; Computer programming; Computer science; control theory; systems; Computer systems and distributed systems. User interface; Concurrency control; Concurrent computing; Control systems; Costs; Exact sciences and technology; Information sharing; Microprocessors; Performance analysis; Performance gain; Protocol; Queuing; Software; Software engineering; Multiprocessor; Concurrency control; Resource sharing; Performance analysis; Distributed system; Coherence
• ISSN: 0098-5589; 1939-3520
• DOI: 10.1109/32.16604

The authors propose an integrated control mechanism and analyze the performance gain due to its use. An extension to the data sharing system structure is examined in which a shared intermediate memory is used for buffering and for early commit processing. Read-write-synchronization and write-serialization problems arise. The authors show how the integrated concurrency protocol can be used to overcome both problems. A queueing model is used to quantify the performance improvement. Although using intermediate memory as a buffering device produces a moderate performance benefit, the analysis shows that more substantial gains can be realized when this technique is combined with the use of an integrated concurrency-coherency control protocol.< >