A Queueing Network Model for Measuring Two-Phase Locking Overhead
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چکیده
This work investigates the effect of the explicit inclusion of queueing delays due to locking overhead in a performance study of a two phase locking concurrency control method. A mean value analysis is used to calculate the system's performance measures, response time and throughput. It is found that the locking overhead's contribution to delay depends largely on the degree of page faulting activity in the system and the degree of contention for the CPU. Even at low page faulting probabilities, it is shown that the 2PL locking overhead is not negligible and should therefore be incorporated as a parameter in two phase locking performance studies.
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تاریخ انتشار 2007