Advanced Concurrency Control for Transactional Memory Using Transaction Commit Rate

Concurrency control for Transactional Memory (TM) is investigated as a means for improving resource usage by adjusting dynamically the number of concurrently executing transactions. The proposed control system takes as feedback the measured Transaction Commit Rateto adjust the concurrency. Through an extensive evaluation, a new Concurrency Control Algorithm (CCA), called P-only Concurrency Control (PoCC), is shown to perform better than our other four proposed CCAs for a synthetic benchmark, and the STAMP and Lee-TM benchmarks.