Performance study of protocols in replicated database.

by Ching-Ting, Ng.Thesis (M.Phil.)--Chinese University of Hong Kong, 1996.Includes bibliographical references (leaves 79-82).Abstract --- p.iAcknowledgement --- p.iiiChapter 1 --- Introduction --- p.1Chapter 2 --- Background --- p.5Chapter 2.1 --- Protocols tackling site failure --- p.5Chapter 2.2 --- Protocols tackling Partition Failure --- p.6Chapter 2.2.1 --- Primary site --- p.6Chapter 2.2.2 --- Quorum Consensus Protocol --- p.7Chapter 2.2.3 --- Missing Writes --- p.10Chapter 2.2.4 --- Virtual Partition Protocol --- p.11Chapter 2.3 --- Protocols to enhance the Performance of Updating --- p.11Chapter 2.3.1 --- Independent Updates and Incremental Agreement in Replicated Databases --- p.12Chapter 2.3.2 --- A Transaction Replication Scheme for a Replicated Database with Node Autonomy --- p.13Chapter 3 --- Transaction Replication Scheme --- p.17Chapter 3.1 --- A TRS for a Replicated Database with Node Autonomy --- p.17Chapter 3.1.1 --- Example --- p.17Chapter 3.1.2 --- Problem --- p.18Chapter 3.1.3 --- Network Model --- p.18Chapter 3.1.4 --- Transaction and Data Model --- p.19Chapter 3.1.5 --- Histories and One-Copy Serializability --- p.20Chapter 3.1.6 --- Transaction Broadcasting Scheme --- p.21Chapter 3.1.7 --- Local Transactions --- p.22Chapter 3.1.8 --- Public Transactions --- p.23Chapter 3.1.9 --- A Conservative Timestamping Algorithm --- p.24Chapter 3.1.10 --- Decentralized Two-Phase Commit --- p.25Chapter 3.1.11 --- Partition Failures --- p.27Chapter 4 --- Simulation Model --- p.29Chapter 4.1 --- Simulation Model --- p.29Chapter 4.1.1 --- Model Design --- p.29Chapter 4.2 --- Implement at ion --- p.37Chapter 4.2.1 --- Simulation --- p.37Chapter 4.2.2 --- Simulation Language --- p.37Chapter 5 --- Performance Results and Analysis --- p.39Chapter 5.1 --- Simulation Results and Data Analysis --- p.39Chapter 5.1.1 --- Experiment 1 : Variation of TRS Period --- p.44Chapter 5.1.2 --- Experiment 2 : Variation of Clock Synchronization --- p.47Chapter 5.1.3 --- Experiment 3 : Variation of Ratio of Local to Public Transaction --- p.49Chapter 5.1.4 --- Experiment 4 : Variation of Number of Operations --- p.51Chapter 5.1.5 --- Experiment 5 : Variation of Message Transmit Delay --- p.55Chapter 5.1.6 --- Experiment 6 : Variation of the Interarrival Time of Transactions --- p.58Chapter 5.1.7 --- Experiment 7 : Variation of Operation CPU cost --- p.61Chapter 5.1.8 --- Experiment 8 : Variation of Disk I/O time --- p.64Chapter 5.1.9 --- Experiment 9 : Variation of Cache Hit Ratio --- p.66Chapter 5.1.10 --- Experiment 10 : Variation of Number of Data Access --- p.68Chapter 5.1.11 --- Experiment 11 : Variation of Read Operation Ratio --- p.70Chapter 5.1.12 --- Experiment 12 : Variation of One Site Failed --- p.72Chapter 5.1.13 --- Experiment 13 : Variation of Sites Available --- p.74Chapter 6 --- Conclusion --- p.77Bibliography --- p.79Chapter A --- Implementation --- p.83Chapter A.1 --- Assumptions of System Model --- p.83Chapter A.1.1 --- Program Description --- p.83Chapter A.1.2 --- TRS System --- p.85Chapter A. 1.3 --- Common Functional Modules for Majority Quorum and Tree Quo- rum Protocol --- p.88Chapter A.1.4 --- Majority Quorum Consensus Protocol --- p.90Chapter A. 1.5 --- Tree Quorum Protocol --- p.9