1. What contributions have the authors mentioned in the paper "Model-based proactive read-validation in transaction processing systems" ?
To counteract this problem, the authors present an analytical model that predicts the abort probability of transactions handled via read-validation schemes.. The authors show how to exploit the abort probability predictions returned by the model in combination with a threshold-based scheme to trigger read-validations.. The authors also show how this approach can definitely improve performance—leading up to 14 % better turnaround—as demonstrated by some experiments carried out with a port of the TPC-C benchmark to Software Transactional Memory.
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2. What future works have the authors mentioned in the paper "Model-based proactive read-validation in transaction processing systems" ?
As future work the authors plan to investigate more sophisticated strategies for exploiting the abort probability predictions by the model in combination with other ( predicted ) costs—such as the expected residual transaction execution time and the real cost of the validation operation as function of the readset size.. The authors also plan to investigate architectural solutions for reducing the overhead to manage the model at runtime, to further improve the performance of transactional applications.
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