Results 1 to 10 of about 1,772,274 (338)
Partitioned two-phase locking [PDF]
ACM Transactions on Database Systems, 1986 In a large integrated database, there often exists an “information hierarchy,” where both raw data and derived data are stored and used together. Therefore, among update transactions, there will often be some that perform only read accesses from a certain (i.e., the “raw” data) portion of the database and write into another (i.e., the “derived” data ...
Meichun Hsu, Arvola Chan
semanticscholar +3 more sources
Two-phase locking performance and its thrashing behavior [PDF]
ACM Transactions on Database Systems, 1993 A novel mean value analysis method for the two-phase locking (2PL) concurrency control method with the general waiting policy is presented here, which extends previous work to the important case of variable-size transactions, where size is determined by the number of locks requested by the transaction.
Alexander Thomasian
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Compatibility and commutativity in non-two-phase locking protocols [PDF]
Proceedings of the 1st ACM SIGACT-SIGMOD symposium on Principles of database systems - PODS '82, 1982 Research on concurrency control mechanisms for database systems has had as a primary goal the discovery of techniques for allowing increased levels of concurrent execution of transactions. In this paper, we study this problem in the context of non-two-phase locking protocols which are defined for data bases in which a directed acyclic graph structure ...
C. Mohan, D. Fussell, A. Silberschatz
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Quasi-dynamic two-phase locking [PDF]
Proceedings of the third international conference on Information and knowledge management - CIKM '94, 1994 Among the plethora of concurrency control algorithms that have been proposed and analyzed, two-phase locking (2PL) has been adapted as the industry de facto standard concurrency control. In accord, current research in concurrency control is focusing on enhancing the scalability of 2PL performance in highly concurrent and contentious environments.
Abdelsalam Helal +2 more
semanticscholar +3 more sources
Asymptotic phase-locking and synchronization in two-qubit systems [PDF]
Journal of Physics Communications, 2023 The paper concerns spontaneous asymptotic phase-locking and synchronization in two-qubit systems undergoing continuous Markovian evolution described by Lindbladian dynamics with normal Lindblad operators.
D Štěrba, J Novotný, I Jex
doaj +2 more sources
Interactions Between Two Phase-Locked Loop Synchronized Grid Converters [PDF]
IEEE Transactions on Industry Applications, 2021 Grid converters synchronized by phase-locked loops (PLLs) could suffer from stability problems, especially being connected to a weak grid or high penetration of converters. The existing literature assesses the stability of the paralleled PLL-synchronized converters at the same point of common coupling (PCC) using identical control and system parameters.
Zhixiang Zou +4 more
openaire +3 more sources
RDMA Optimization Technology for Two-Phase Locking Concurrency Control [PDF]
Jisuanji kexue yu tansuo, 2023 Performance optimization of distributed transactions is one of the hottest topics in academic and industry community. Concurrency control technology based on two-phase locking can guarantee the correctness of concurrent transaction scheduling, thus it is
LI Jingyao, ZHANG Qian, ZHAO Zhanhao, LU Wei, ZHANG Xiao, DU Xiaoyong
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Frequency comb injection locking of mode locked lasers [PDF]
New Journal of Physics, 2013 The two-frequency problem of synchronization of the pulse train of a passively mode locked soliton laser to an externally injected pulse train is solved in the weak injection regime.
Omri Gat, David Kielpinski
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Distributed Consistency Method and Two-Phase Locking in Cloud Storage over Multiple Data Centers [PDF]
Cybernetics and Information Technologies, 2015 In replication management under multi-datacenter cloud storage environments, the problem of a replica being inconsistent across multiple datacenters must be solved.
Lin Fan, Xiahou Jianbin, Huang Qihua
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Phase locking of vortex cores in two coupled magnetic nanopillars [PDF]
AIP Advances, 2014 Phase locking dynamics of the coupled vortex cores in two identical magnetic spin valves induced by spin-polarized current are studied by means of micromagnetic simulations.
Qiyuan Zhu +5 more
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