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An Environment for the Development of Concurrent Object-Based Applications
2005
Electronical Notes in Theoretical Computer Science
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In this paper we present the set of tools we have developed and/or integrated to build an environment for the development of concurrent object-based systems. ...
On previous work we have mainly discussed the language along with case studies and analysis techniques (model checking and simulation) for systems described in OBGG. ...
The Simulation interface graphically presents the simulation results to the user, currently this tool is not implemented. The structure of the Database is based on the one proposed in [17] . ...
doi:10.1016/j.entcs.2004.12.026
fatcat:z2wgeakauffznldexjndybfyaq
Towards a General Real-Time Database Simulator Software Library
1999
IFAC Proceedings Volumes
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The goal of the library is to allow simulator designers to use a well tested and documented software to implement basic database simulator functionality. ...
All additional and research-speci c functionality can be added on top of the library components. ...
It is based on a set of CASE-tools along with a window-based user interface and a language to describe simulated environments. ...
doi:10.1016/s1474-6670(17)39968-8
fatcat:7nsg3bqrmzaydf5xurrwgfueiy
A Transactional Architecture for Simulation
2010
2010 15th IEEE International Conference on Engineering of Complex Computer Systems
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We are developing a concurrent, agent-based approach to complex systems simulation as part of the CoSMoS project. ...
In such simulations an agent's behaviour can typically be characterised as a series of queries and updates to its environment-a "transactional" pattern of interaction familiar to programmers of database ...
ACKNOWLEDGEMENTS We would like to express our thanks to other members of the CoSMoS project, and in particular to Susan Stepney of the University of York for many helpful discussions. ...
doi:10.1109/iceccs.2010.7
dblp:conf/iceccs/HoverdS10
fatcat:7ayimjtnr5a3dexf6mq2sx2s7i
A Prudent-Precedence Concurrency Control Protocol for High Data Contention Database Enviornments
2016
International Journal of Database Management Systems
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In this paper, we propose a concurrency control protocol, called the Prudent-Precedence Concurrency Control (PPCC) protocol, for high data contention database environments. ...
A detailed simulation model has been constructed and extensive experiments have been conducted to evaluate the performance of the proposed approach. ...
Experimental Results In this section, we report the simulation results on the three protocols based on the above setups. ...
doi:10.5121/ijdms.2016.8501
fatcat:judtzomot5hlfhsctmmut52gpm
Design, Implementation and Performance Analysis of Concurrency Control Algorithm with Architecture for Temporal Database
2016
International Journal of Database Management Systems
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This research study proposes an efficient concurrency algorithm which is a mixture of both timestamp and locking approach suitable for temporal database environment where more than one users of distributed ...
Concurrency control mechanism is one of the critical factors which affect the overall performance of database system. ...
The algorithm is applied through trigger which either denies or allows a user session of a distributed transaction to perform its operation based on the concurrency control rules specified in algorithm ...
doi:10.5121/ijdms.2016.8503
fatcat:3yqsu5vnajdn7clij5eim5u6ea
Research issues in real-time database systems Survey paper
1995
Information Sciences
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In this paper, a basic understanding of the issues in real-time database systems is provided and the research efforts in this area are introduced. ...
Management of real-time information through a database system requires the integration of concepts from both real-time systems and database systems. ...
), and target one of the environments in their study. ...
doi:10.1016/0020-0255(95)00130-1
fatcat:xpbewsfa3vb3jlbzxinnqehldy
A simulation-based approach for dynamic process management at web service platforms
2005
Computers & industrial engineering
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In this paper, we propose a simulation-based framework to guide scheduling of composite service execution. ...
Online simulation of the dynamics of the open environment is used for scheduling service requests at the service platform. ...
Acknowledgements We are grateful to the referees, whose comments have considerably improved the presentation of the ideas in this paper. ...
doi:10.1016/j.cie.2005.02.003
fatcat:nxjdrgogtffklgr23ge6mqqcri
Semantic multigranularity locking and its performance in object-oriented database systems
1998
Journal of systems architecture
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Our concurrency control scheme is applicable for realistic OODBSs in the presence of complex objects with shared subobjects. Lastly, we evaluate the performance of ISMGL by using a simulation study. ...
Concurrency control schemes for object-oriented database systems (OODBSs) used in the area of performance-critical applications should increase the degree of concurrency and decrease locking overhead in ...
Acknowledgements The authors wish to acknowledge the anonymous referees for their helpful comments. ...
doi:10.1016/s1383-7621(97)00069-6
fatcat:craquqibezg25myeyln65iwfi4
An Analytic Model for Performance Analysis of Concurrency Control Strategies in Mobile Environments
1999
Computer journal
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Many performance studies have shown that locking based protocols outperform other concurrency control protocols in most database configurations and workloads. ...
According to the experimental results we show that the behavior of mobile users and the degree of data contention have a significant impact on the relative performances of the concurrency control strategies ...
CONCLUSION AND FUTURE WORK In this paper, we have presented a quantitative study and comparison of the performances of different concurrency control protocols in mobile environments. ...
doi:10.1093/comjnl/42.6.511
fatcat:vnicv2i6kff45pyiwevirqlwsq
An Aggressive Concurrency Control Protocol for Main Memory Databases
2016
International Journal of Computer Applications
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In this paper, we propose a concurrency control protocol, called the Prudent-Precedence Concurrency Control (PPCC) protocol, for high data contention main memory databases. ...
A detailed simulation model has been constructed and extensive experiments have been conducted to evaluate the performance of the proposed approach. ...
Experimental Results In this section, we report the simulation results on the two protocols based on the above setups. ...
doi:10.5120/ijca2016912260
fatcat:rxl7wstd3fby3fr7t7yaodp6tm
Evaluating servers with commercial workloads
2003
Computer
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As a result, OLTP workloads spend a nonnegligible percentage of their execution time in the operating system. ...
As a result, these applications are more sensitive to memory latencies. Researchers have also studied the impact of DSS workloads on server design. ...
Although this approach has been used with some success, it does not capture the changes in the workload's execution based on the new system's environment. ...
doi:10.1109/mc.2003.1178043
fatcat:accb3hf7gfc5poiwktep3bm2dy
Automatic verification of external interrupt behaviors for microprocessor design
2007
Proceedings - Design Automation Conference
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PEVT successfully identified several sophisticated remaining bugs with only less than 88,000 cycles of RTL simulation with execution time of 424 seconds in a SUN Blade2000 workstation. ...
Interrupt behaviors, especially the external ones, are difficult to verify in a microprocessor design project in that they involve both interacting hardware and software. ...
The second rule in the database checks the priority of external interrupts. This rule is based on the observation of concurrent interrupt in Section 3.1. ...
doi:10.1145/1278480.1278701
dblp:conf/dac/YangHH07
fatcat:qmam2kslkjeatgqazlxhecg2kq
Using Separate Processing for Read-Only Transactions in Mobile Environment
[chapter]
2002
Lecture Notes in Computer Science
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Thus, both the update and read-only transactions can be executed in a more efficient manner. ...
The performance of the protocol for Group Strong Consistency was examined through a series of simulation experiments. ...
Based on Theorem 1, a read-only transaction Q reads inconsistent data if there is a cycle in the DP-graph of Q. ...
doi:10.1007/3-540-36389-0_8
fatcat:2pfdppqnd5bprlybiianvl6w7m
Simulation studies on concurrency control in parallel transaction processing systems
1997
Parallel Computing
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In this paper a simulation system for shared-nothing parallel TP systems was presented, which aims at, but is not restricted to, the studies of the CC methods. ...
LW DC, was compared with 2PL and the well-known DWDL (distributed wait-depth limited) CC methods based on the presented simulation system. ...
A simulation experiment In this section we present a simulation experiment which is based on the simulation system introduced in Section 2 and the CC methods introduced in Section 3. ...
doi:10.1016/s0167-8191(97)00019-7
fatcat:rr5ny7ilvnfgrhm6qgkooprjaq
On using similarity for concurrency control in real-time database systems
1998
Journal of Systems and Software
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By studying the correctness requirements of the stock trading database applications, a real-time two phase locking protocol, High Priority 2 Phase Locking (H2PL) is re-defined based on similarity. ...
Most of the proposed concurrency control protocols for real-time database systems (RTDBS) are based on serializability theorem. ...
In the central database site, there is a CPU and a disk which stores the database. A modified version of H2PL [Abbo88] based on similarity is defined for concurrency control. ...
doi:10.1016/s0164-1212(98)10035-3
fatcat:wwaht7amynfrzblgvajgrqd5x4
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