Download or read book Simulation and Analysis of Moving head Disk Scheduling Algorithms written by Wilson Francis Harris and published by . This book was released on 1976 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Comparative Simulation Study of Two Disk scheduling Algorithms written by R. A. Adkins and published by . This book was released on 1977 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Disk Scheduling Algorithms for a Multiple Disk System written by James Joseph Stabile and published by . This book was released on 1988 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Drum and Disk Storage Units written by S.H. Fuller and published by Lecture Notes in Computer Science. This book was released on 1975-08-29 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Comparative Analysis of Several Disk Scheduling Algorithms written by Christopher James Martin Turnbull and published by . This book was released on 1972 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Database Systems For Advanced Applications 93 Proceedings Of The 3rd International Symposium On Database Systems For Advanced Applications written by S C Moon and published by World Scientific. This book was released on 1993-03-18 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings volume contains 52 technical research papers on multidatabases, distributed DB, multimedia DB, object-oriented DB, real-time DB, temporal DB, deductive DB, and intelligent user interface. Some industrial papers are also included.

Download or read book Disk Scheduling Algorithms written by Joseph H. Green and published by . This book was released on 1981 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance Analysis of Disk Scheduling Mechanisms with Long range Dependent Access Requests written by John Michael Schreiber and published by . This book was released on 2006 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, we will analyze the performance of disk scheduling algorithms such as shortest seek time first (SSTF) with access requests exhibiting behavior consistent with long-range dependent autocorrelation, sometimes called self-similar behavior. The concept of self-similar accesses has changed the way performance models are organized, conducted, and evaluated. While disk scheduling mechanics and algorithms have been studies extensively, the access arrival streams are assumed to be Poisson of normally distributed, and not long-range dependent. Our study examines the performance of a modern disk under loads that vary only in their degree of auto-correlation and utilization levels. We will examine several of the conventional scheduling algorithms under these varying load conditions and then compare the various levels of access arrivals with performance under random arrivals. We will use a modeler called DiskSim 3.0, which allows performance features of a specific disk to be reproduced in great detail. We will discuss DiskSim in greater detail later in this study.

Download or read book Aggressive Centralized and Distributed Scheduling of Disk Requests written by Bruce L. Worthington and published by . This book was released on 1995 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "Disk request scheduling is a critical element of high- performance computer system design. Previous disk scheduling research is insufficient because it uses simplistic or outdated disk models, unrepresentative workloads, and inadequate performance metrics. This dissertation explores the disk scheduler design space and provides guidelines for computer system engineers. Host-based and disk-based centralized scheduling are compared with distributed scheduling, a new paradigm with cost, complexity, and performance advantages. In distributed scheduling, individual disk schedulers located at multiple points along the I/O path cooperate to make scheduling decisions. Scheduler implementations are evaluated using a detailed simulator containing validated models of state-of-the-art host systems, controllers, buses, and disk drives. The simulator is driven with extensive traces of real-world system and disk activity, and it reports system performance metrics (e.g., application run times) in addition to traditional disk subsystem metrics (e.g., mean request response times). It is shown that for the best system performance, scheduling algorithms must incorporate system-level information (e.g., request priorities). Scheduling algorithms that focus on reducing seek delays do not need extensive disk-specific information. Finally, algorithms must exploit a disk's on-board cache to achieve the lowest disk service times. Additional guidelines are provided for dealing with disk drive command queues, sequential disk request optimizations, and different on-board cache configurations."

Download or read book Random Arrivals and Minimal Total Processing Time MTPT Disk Scheduling Disciplines written by Samuel H. Fuller and published by . This book was released on 1972 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The article investigates the application of minimal-total-processing time (MTPT) scheduling disciplines to rotating storage units when random arrival of requests is allowed. Fixed-head drum and moving-head disk storage units are considered and particular emphasis is placed on the relative merits of the MTPT scheduling discipline with respect to the shortest-latency-time-first (SLTF) scheduling discipline. The data presented are the results of simulation studies. Situations are discovered in which the MTPT discipline is superior to the SLTF discipline, and situations are also discovered in which the opposite is true. An implementation of the MTPT scheduling algorithm is presented and the computational requirements of the algorithm are discussed. It is shown that the sorting procedure is the most time consuming phase of the algorithm. (Author).

Download or read book Disk Scheduling Algorithms Based on Rotational Position written by David M. Jacobson and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling and Simulation written by and published by . This book was released on 1986 with total page 906 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A comparative analysis of timing models and scheduling algorithms for digital simulation written by Deepak M. Pabari and published by . This book was released on 1988 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Modelling Simulation written by and published by . This book was released on 1991 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 A Simulation and Comparison of Selected Disk Scheduling Policies written by Albert William Biggerstaff and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rotational Position Optimization RPO Disk Scheduling written by Walter A. Burkhard and published by . This book was released on 2001 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rotational position optimization disk scheduling algorithms utilize seek distance versus rotational distance information implemented as rpo tables (arrays) which are stored in flashmemory within each disk drive. We consider a novel representation scheme for this information reducing the required flashmemory by a factor of more than thirty thereby reducing the manufacturing cost per drive. We present simulation results showing the throughput for conservative and aggressive versions of the scheme as well as comparative results with the standard production drives not using these results.