Abstract
Contention Manager(CM),which is used for the resolution of conflicting transactions,plays a significant role in the obstruction-free software transactional memory.The relativity-detection contention management model was put forward to solve the problem that the existing contention management policies' performance is sensitive to their workloads.This model could detect and analyze the relativity of conflict from the past decision-making records,then took the relativity as the basis of the current arbitration,so that it helped to get more favorable resolution results.Two benchmarks were tested and the experimental results show that it has the advantages of being flexible and adaptable.The number of detected transactions,which is committed finally,can be accounted for up to 30% of the throughput of the system.Using this model,the total transaction throughput is about 11% higher than the other reference objects.
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