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2PLSF: Two-Phase Locking with Starvation-Freedom
ACM SIGPLAN Symposium on Principles & Practice of Parallel Programming, 2023Invented more than 40 years ago, the two-phase locking concurrency control (2PL) is capable of providing opaque transactions over multiple records. However, classic 2PL can suffer from live-lock and its scalability is low when applied to workloads with a
P. Ramalhete, Andreia Correia, P. Felber
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Strong consistency is not hard to get: Two-Phase Locking and Two-Phase Commit on Thousands of Cores
Proceedings of the VLDB Endowment, 2019Concurrency control is a cornerstone of distributed database engines and storage systems. In pursuit of scalability, a common assumption is that Two-Phase Locking (2PL) and Two-Phase Commit (2PC) are not viable solutions due to their communication ...
Claude Barthels +4 more
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High-Efficiency Phase-Locking of Millimeter-Wave Magnetron for High-Power Array Applications
IEEE Electron Device Letters, 2021We introduced a phase-locking mechanism of millimeter-wave magnetrons coupled through a carefully designed coupling bridge. For such a structure, two Ka-band 22-vane rising-sun magnetron circuits operated in the $\pi $ -mode were phase-locked tightly as
Minsheng Song +7 more
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A superior two-phase locking algorithm and its performance
Information Sciences, 1991zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kumar, Vijay, Hsu, Meichun
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Locked particle standard deviation for two-phase systems
Powder Technology, 1989Abstract In many industrial applications, solids composed of a matrix and an inclusion phase are size reduced. For the first time, this monograph derives equations that describe the frequency distribution and standard deviation of the inclusions in the large locked particles.
T. P. MELOY +3 more
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Analysis and Simulation of Two Phase Locked Methods
2019 IEEE 2nd International Conference on Electronics and Communication Engineering (ICECE), 2019Phase-locked loop (PLL) is the widely used method to obtain the frequency and phase of grid voltage, and its performance is critical to the overall control system. For traditional synchronous reference frame phase-locked loop (SRF-PLL), voltage amplitude and phase are seriously distorted in three phase unbalance, the performance of the control system ...
Hucheng He +3 more
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Mitigation of Mutual Pulling in Two Phase-locked Loops
2021 19th IEEE International New Circuits and Systems Conference (NEWCAS), 2021In this study, we analyzed the output phase of two mutually coupled phase-locked loops (PLLs) based on the numerical calculation of nonlinear equations. According to the results, when the two PLLs were completely synchronized, the circuits became unstable owing to mutual coupling in certain timing conditions.
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Simulation models of two-phase locking of distributed transactions
Proceedings of the 9th International Conference on Computer Systems and Technologies and Workshop for PhD Students in Computing - CompSysTech '08, 2008The paper suggests simulation models of concurrency control of global transactions in Distributed Database Management Systems. We consider mainly concurrency control according to the method of Two-phase locking (2PL). We present simulation models of 2PL in Distributed databases (DDB), which are developed in the environment for imitation modeling GPSS ...
Svetlana Vasileva, Aleksandar Milev
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Enhanced Frequency Resolution Two-Channel Two-Phase Microcontroller Lock-In Amplifier
IEEE Transactions on Instrumentation and Measurement, 2021This article presents a method to obtain a enhanced frequency resolution two-phase lock-in amplifier (LIA) with two channels in a microcontroller using minimum external circuitry. The timer peripheral of the microcontroller was used to generate the square wave signals for both the excitation and the quadrant demodulation, simplifying the waveform ...
Gustavo Marcati Alexandrino Alves +1 more
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