Integration of Parallel Write Ahead Logging and Cicada Concurrency Control Method

摘要

We proposed the idea of combining the Cicada concurrency control mechanism with P-WAL (parallel write-ahead logging) and experimentally evaluated the proposed control mechanism. Our results show that P-WAL can be combined suitably with Cicada without decreasing Cicada's performance. We then experimentally evaluated the most optimal parallel write-ahead logging parameter among (1) conservative lock release; (2) early lock release, the early release of locks on database objects; and (3) group commit, which writes the transaction log to storage all at once. The results show that early lock release and group commit were the most optimal parameters for the combination of Cicada and P-WAL.