Download or read book The Explicit Incorporation of Variance in the Performance Modeling of Scheduling Algorithms in Distributed and Soft Real time Systems written by Nathan Hamm and published by . This book was released on 2011 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamic Scheduling Algorithms for Distributed Soft Real time Systems written by Hung-Yang Chang and published by . This book was released on 1987 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Scheduling written by Joseph Y-T. Leung and published by CRC Press. This book was released on 2004-04-27 with total page 1215 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook provides full coverage of the most recent and advanced topics in scheduling, assembling researchers from all relevant disciplines to facilitate new insights. Presented in six parts, these experts provides introductory material, complete with tutorials and algorithms, then examine classical scheduling problems. Part 3 explores scheduling models that originate in areas such as computer science, operations research. The following section examines scheduling problems that arise in real-time systems. Part 5 discusses stochastic scheduling and queueing networks, and the final section discusses a range of applications in a variety of areas, from airlines to hospitals.
Download or read book Scheduling in Distributed Computing Systems written by Deo Prakash Vidyarthi and published by Springer Science & Business Media. This book was released on 2008-10-20 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book intends to inculcate the innovative ideas for the scheduling aspect in distributed computing systems. Although the models in this book have been designed for distributed systems, the same information is applicable for any type of system. The book will dramatically improve the design and management of the processes for industry professionals. It deals exclusively with the scheduling aspect, which finds little space in other distributed operating system books. Structured for a professional audience composed of researchers and practitioners in industry, this book is also suitable as a reference for graduate-level students.
Download or read book Time Utility Function Decomposition in Soft Real Time Distributed Systems written by and published by . This book was released on 2004 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: We consider RealTime CORBA 2.0 (Dynamic Scheduling) distributable threads, whose time constraints are specified using time/utility functions (TUFs), operating in legacy environments. In legacy environments, system node resources -- both physical (processor, disk, I/O, etc.) and logical (locks, etc.) -- are shared among time-critical distributable threads and local applications that may or may not be time-critical. Thus, in such environments, distributable threads that are scheduled using their propagated TUFs and scheduling parameters, as mandated by Real-Time CORBA 2.0's Case 2 approach, may suffer performance degradation, if a node scheduler can achieve higher local accrued utility by giving higher eligibility to local threads than to distributable threads. To alleviate this, we consider decomposing TUFs of distributable threads into "subTUFs" that are used for scheduling segments of distributable threads. We present methods for decomposing TUFs. Furthermore, we identify conditions under which TUF decomposition can alleviate performance degradation. Our experimental results reveal that the most important factors that affect the performance of TUF decomposition include the properties of node scheduling algorithms, TUF shapes, task load, Global Slack Factor, local threads and resource dependencies, and that these factors interact.
Download or read book A Distributed Scheduling Algorithm for Heterogeneous Real Time Systems written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-09 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much of the previous work on load balancing and scheduling in distributed environments was concerned with homogeneous systems and homogeneous loads. Several of the results indicated that random policies are as effective as other more complex load allocation policies. The effects of heterogeneity on scheduling algorithms for hard real time systems is examined. A distributed scheduler specifically to handle heterogeneities in both nodes and node traffic is proposed. The performance of the algorithm is measured in terms of the percentage of jobs discarded. While a random task allocation is very sensitive to heterogeneities, the algorithm is shown to be robust to such non-uniformities in system components and load. Zeineldine, Osman and El-Toweissy, Mohamed and Mukkamala, Ravi Unspecified Center NAG1-1114; NAG1-1154...
Download or read book Stochastic Scheduling written by Subhash C. Sarin and published by Cambridge University Press. This book was released on 2010-03-31 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stochastic scheduling is in the area of production scheduling. There is a dearth of work that analyzes the variability of schedules. In a stochastic environment, in which the processing time of a job is not known with certainty, a schedule is typically analyzed based on the expected value of a performance measure. This book addresses this problem and presents algorithms to determine the variability of a schedule under various machine configurations and objective functions. It is intended for graduate and advanced undergraduate students in manufacturing, operations management, applied mathematics, and computer science, and it is also a good reference book for practitioners. Computer software containing the algorithms is provided on an accompanying website for ease of student and user implementation.
Download or read book Time and Probability in Formal Design of Distributed Systems written by Hans A. Hansson and published by Elsevier Publishing Company. This book was released on 1994 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the current economic climate, many, if not all, industries depend upon computer systems for their product, design and manufacturing processes and for routine business functions. Although the use of such systems brings many advantages, the consequences of failure (including physical failure of computer systems, software design faults and human error) can involve both loss of life and environmental damage. safeguards and subsequent accountability. Research funds are accordingly being generated by governments and leading industries, affording the development of safety-critical systems by multi-disciplinary teams of mechanical, structural, electronic and software engineers and, where appropriate, psychologists, sociologists and economists. A new book series Real-Time Safety Critical Systems has been launched as a forum to enable all relevant researchers and developers (from industry and academia world-wide) to report their findings in the field. This publication is the first in the series and concentrates on presenting a framework for specification and analysis of real-time and reliability in distributed systems. The framework consists of a language for modelling the behaviour of distributed systems, a logic for formulating system properties, and an algorithm for verifying that descriptions in the language satisfy formulas expressed in the logic. is also accessible to readers with only a basic knowledge of formal modelling. Indeed, as Willem-Paul de Roever says in his introduction to the publication, it ... constitutes an indispensable link in the education of our next generation of researchers ... [and] ... gives a clear and scientifically responsible description how real-time and probability can be added to process algebra, how to extend Emerson and Clarke's branching time temporal logic to these new features, and how to verify the properties thus expressed by an appropriate tool
Download or read book Non preemptive Time warp Scheduling Algorithms written by Christopher Burdorf and published by . This book was released on 1990 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamic Scheduling Algorithms for Distributed Hard Real time Systems written by Sheng-Chang Cheng and published by . This book was released on 1987 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scheduling in Distributed Soft Real time Systems with Autonomous Components written by Benjamin Chi-Ming Kao and published by . This book was released on 1995 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Real Time Systems Design and Analysis written by Phillip A. Laplante and published by Wiley-IEEE Press. This book was released on 1997 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: "IEEE Press is pleased to bring you this Second Edition of Phillip A. Laplante's best-selling and widely-acclaimed practical guide to building real-time systems. This book is essential for improved system designs, faster computation, better insights, and ultimate cost savings. Unlike any other book in the field, REAL-TIME SYSTEMS DESIGN AND ANALYSIS provides a holistic, systems-based approach that is devised to help engineers write problem-solving software. Laplante's no-nonsense guide to real-time system design features practical coverage of: Related technologies and their histories Time-saving tips * Hands-on instructions Pascal code Insights into decreasing ramp-up times and more!"
Download or read book Evaluation of Scheduling Heuristics for Distributed Soft Real Time Systems Based on the Value Function written by Alfian Budihardjo and published by . This book was released on 1992 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pre Run Time Scheduling of Distributed Real Time Systems written by Jacobus Philomena Cyprianus Verhoosel and published by . This book was released on 1995 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Performance Non preemptive Dynamic Scheduling Algorithm for Soft Real Time System written by Zahereel Ishwar Abdul Khalib and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fault Tolerant Real Time Heterogeneous Distributed System written by Aser Avinash Ekka and published by LAP Lambert Academic Publishing. This book was released on 2011-12 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fault-tolerance becomes an important key to establish dependability in Real Time Distributed Systems (RTDS). In fault-tolerant Real Time Distributed systems, detection of fault and its recovery should be executed in timely manner so that in spite of fault occurrences the intended output of real-time computations always take place on time. Hardware and software redundancy are well-known effective methods for fault tolerance, where extra hard ware (e.g., processors, communication links) and software (e.g., tasks, messages) are added into the system to deal with faults. Performances of RTDS are mostly guided by efficiency of scheduling algorithm and schedulability analyses are performed on the system to ensure the timing constrains. Fault tolerance can be achieved by scheduling additional ghost copies in addition to the primary copy of the task. The method proposed here extends the traditional distributed recovery block (DRB) based fault tolerant scheduling approach for real time tasks. Our algorithms are mostly based on software redundancy, and ensures that the parallel updating of backup task works better in case of transient overload and handles permanent, transient and timing fau
Download or read book Performance Evaluation of Scheduling Algorithms for Real time Systems Using RealView written by Joaquín Guerra-Achem and published by . This book was released on 1994 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
