Download or read book Real Time Status Monitoring for Distributed Systems written by Zary Segall and published by . This book was released on 1982 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Work on the monitor has concentrated on three aspects: furthering the conceptual design, implementing the lower level mechanisms of the monitor and designing and implementing the relational monitor. At this point, we have a fairly complete idea of the tasks the various components perform and how these components will interact. The components are: StarMon, low level data collection under the StarOS operating system on CM*, consisting of two processes: Accountant, interfaces to the Simon Accountant via the EtherNet; MonProc, performs name translation, enabling of events and miscellaneous services. Medic, low level collection under the Medusa operating system on CM*, Simon Accountant interfaces with the resident monitor (either StarMon or Medic using a system-independent protocal; Simon, the computing engine' for deriving high level information from event records; Control, accepts queries from the user in a declarative language and translates these queries into update networks for Simon. At this point, the first three components are nearing completion. Once their condition is stable, sensors will be placed throughout both StarOS and Medusa to provide a source of event records for Simon. The structure of Simon has been implemented, although more work is necessary. The Control component has been partially designed and is in the early stages of implementation. Also the a Sensor Definition facility has been designed and implemented.
Download or read book Real time Status Monitoring for Distributed Systems written by and published by . This book was released on 1983* with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Work on the monitor has concentrated on three aspects: furthering the conceptual design, implementing the lower level mechanisms of the monitor and designing and implementing the relational monitor. At this point, we have a fairly complete idea of the tasks the various components perform and how these components will interact. The components are: StarMon, low level data collection under the StarOS operating system on CM*, consisting of two processes: Accountant, interfaces to the Simon Accountant via the EtherNet; MonProc, performs name translation, enabling of events and miscellaneous services. Medic, low level collection under the Medusa operating system on CM*, Simon Accountant interfaces with the resident monitor (either StarMon or Medic using a system-independent protocal; Simon, the computing engine' for deriving high level information from event records; Control, accepts queries from the user in a declarative language and translates these queries into update networks for Simon. At this point, the first three components are nearing completion. Once their condition is stable, sensors will be placed throughout both StarOS and Medusa to provide a source of event records for Simon. The structure of Simon has been implemented, although more work is necessary. The Control component has been partially designed and is in the early stages of implementation. Also the a Sensor Definition facility has been designed and implemented.
Download or read book Monitoring and Debugging of Distributed Real time Systems written by Jeffrey J.-P. Tsai and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 1995 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Site Reliability Engineering written by Niall Richard Murphy and published by "O'Reilly Media, Inc.". This book was released on 2016-03-23 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overwhelming majority of a software system’s lifespan is spent in use, not in design or implementation. So, why does conventional wisdom insist that software engineers focus primarily on the design and development of large-scale computing systems? In this collection of essays and articles, key members of Google’s Site Reliability Team explain how and why their commitment to the entire lifecycle has enabled the company to successfully build, deploy, monitor, and maintain some of the largest software systems in the world. You’ll learn the principles and practices that enable Google engineers to make systems more scalable, reliable, and efficient—lessons directly applicable to your organization. This book is divided into four sections: Introduction—Learn what site reliability engineering is and why it differs from conventional IT industry practices Principles—Examine the patterns, behaviors, and areas of concern that influence the work of a site reliability engineer (SRE) Practices—Understand the theory and practice of an SRE’s day-to-day work: building and operating large distributed computing systems Management—Explore Google's best practices for training, communication, and meetings that your organization can use
Download or read book Software Development of Real time Distributed Systems written by S. C. Hui and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distributed Real Time Systems written by K. Erciyes and published by Springer. This book was released on 2019-07-23 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: This classroom-tested textbook describes the design and implementation of software for distributed real-time systems, using a bottom-up approach. The text addresses common challenges faced in software projects involving real-time systems, and presents a novel method for simply and effectively performing all of the software engineering steps. Each chapter opens with a discussion of the core concepts, together with a review of the relevant methods and available software. This is then followed with a description of the implementation of the concepts in a sample kernel, complete with executable code. Topics and features: introduces the fundamentals of real-time systems, including real-time architecture and distributed real-time systems; presents a focus on the real-time operating system, covering the concepts of task, memory, and input/output management; provides a detailed step-by-step construction of a real-time operating system kernel, which is then used to test various higher level implementations; describes periodic and aperiodic scheduling, resource management, and distributed scheduling; reviews the process of application design from high-level design methods to low-level details of design and implementation; surveys real-time programming languages and fault tolerance techniques; includes end-of-chapter review questions, extensive C code, numerous examples, and a case study implementing the methods in real-world applications; supplies additional material at an associated website. Requiring only a basic background in computer architecture and operating systems, this practically-oriented work is an invaluable study aid for senior undergraduate and graduate-level students of electrical and computer engineering, and computer science. The text will also serve as a useful general reference for researchers interested in real-time systems.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Reports Awareness Circular TRAC written by and published by . This book was released on 1989-02 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Real time Monitoring of Parallel and Distributed Systems written by David Mark Ogle and published by . This book was released on 1988 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book E Business and Distributed Systems Handbook written by Amjad Umar and published by nge solutions, inc. This book was released on 2003 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This is overview of an extensive handbook that systematically discusses how to translate e-business strategies to working solutions by using the latest distributed computing technologies. This module of the handbook paints the big picture of the Next Generation Real-time Enterprises with numerous case studies to highlight the key points. "
Download or read book Distributed Systems for System Architects written by Paulo Veríssimo and published by Springer Science & Business Media. This book was released on 2001-01-31 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary audience for this book are advanced undergraduate students and graduate students. Computer architecture, as it happened in other fields such as electronics, evolved from the small to the large, that is, it left the realm of low-level hardware constructs, and gained new dimensions, as distributed systems became the keyword for system implementation. As such, the system architect, today, assembles pieces of hardware that are at least as large as a computer or a network router or a LAN hub, and assigns pieces of software that are self-contained, such as client or server programs, Java applets or pro tocol modules, to those hardware components. The freedom she/he now has, is tremendously challenging. The problems alas, have increased too. What was before mastered and tested carefully before a fully-fledged mainframe or a closely-coupled computer cluster came out on the market, is today left to the responsibility of computer engineers and scientists invested in the role of system architects, who fulfil this role on behalf of software vendors and in tegrators, add-value system developers, R&D institutes, and final users. As system complexity, size and diversity grow, so increases the probability of in consistency, unreliability, non responsiveness and insecurity, not to mention the management overhead. What System Architects Need to Know The insight such an architect must have includes but goes well beyond, the functional properties of distributed systems.
Download or read book Distributed Tracing in Practice written by Austin Parker and published by O'Reilly Media. This book was released on 2020-04-13 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most applications today are distributed in some fashion. Monitoring the health and performance of these distributed architectures requires a new approach. Enter distributed tracing, a method of profiling and monitoring applications—especially those that use microservice architectures. There’s just one problem: distributed tracing can be hard. But it doesn’t have to be. With this practical guide, you’ll learn what distributed tracing is and how to use it to understand the performance and operation of your software. Key players at Lightstep walk you through instrumenting your code for tracing, collecting the data that your instrumentation produces, and turning it into useful, operational insights. If you want to start implementing distributed tracing, this book tells you what you need to know. You’ll learn: The pieces of a distributed tracing deployment: Instrumentation, data collection, and delivering value Best practices for instrumentation (the methods for generating trace data from your service) How to deal with or avoid overhead, costs, and sampling How to work with spans (the building blocks of request-based distributed traces) and choose span characteristics that lead to valuable traces Where distributed tracing is headed in the future
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1982 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design Guidelines for a Monitoring Environment Concerning Distributed Real time Systems written by Aida Omerovic and published by Fagbokforlaget. This book was released on 2004 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: While the dependability requirements of distributed real-time systems are expanding, there is currently no framework for defining and mapping these requirements into the system design and operation. A method of controlling and achieving the dependability level is real-time monitoring, which measures the degree of requirements fulfilment, relates it to the pre-defined, measurable system-level expectations and dynamically adapts the system, based on quality metrics, risk analysis, cost evaluation, control theory, neural networks, data acquisition and system knowledge management. The book deduces a framework to reveal, define, quantify, measure, analyse, design, implement, test, monitor and enhance dependability (functional and non-functional) requirements of a distributed system with real-time constraints. It is presented how the framework can be applied throughout all life-cycle stages, under varying constraints and with maximised cost effectiveness. An overview of the tools and methodologies applicable has been given and an integrated and generalised architecture for ensuring continuous fulfilment of system requirements, proposed. The framework provides a multilevel specification mechanism to establish the preservation of system requirements. This ensures the correct functioning of system through adaptations at run time. Among the benefits are controlled access and coordinated resource sharing in accordance with service-level agreement policies, multi-stakeholder interest preservation, transparency with respect to location, naming, performance etc., achievement of quality of service on demand, decentralisation, seamless integration of resources and applications, as well as increased predictability. READERSHIP: The intended audience is broad: real time and distributed systems scientists and developers, software engineers, students, quality assurance managers, contractors, users, service providers and all those searching for an alternative approach to handling and ensuring automated control of fulfilment of system requirements. Moreover, those needing a handbook on contract negotiations and a method of tracing operational results back into system requirements of long lived projects with high dependability and integrity demands.
Download or read book Large Scale Distributed Computing and Applications Models and Trends written by Cristea, Valentin and published by IGI Global. This book was released on 2010-05-31 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many applications follow the distributed computing paradigm, in which parts of the application are executed on different network-interconnected computers. The extension of these applications in terms of number of users or size has led to an unprecedented increase in the scale of the infrastructure that supports them. Large-Scale Distributed Computing and Applications: Models and Trends offers a coherent and realistic image of today's research results in large scale distributed systems, explains state-of-the-art technological solutions for the main issues regarding large scale distributed systems, and presents the benefits of using large scale distributed systems and the development process of scientific and commercial distributed applications.
Download or read book Query based Runtime Monitoring in Real time and Distributed Systems written by Márton Búr and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Modern smart and safe cyber-physical systems (CPSs) have complex interactions with their uncertain environment that is rarely known in advance, while operating in a trustworthy way. They heavily depend on intelligent data processing carried out over a heterogeneous and distributed computing platform with resource-constrained devices to monitor and control autonomous behavior. Due to these characteristics, design time verification and testing used in traditional safety-critical systems often become infeasible in practice. As such, runtime verification approaches are used to ensure correct operation. This thesis addresses the challenges of runtime monitoring in smart and safe CPSs by adapting graph-like representations mainly used at design time to a runtime setting to provide an extra layer of safety to data-intensive critical systems.First, we adapt runtime models for resource-constrained real-time environments to capture the system state in an dynamic knowledge graph that incorporates domain concepts. We propose to capture safety rules of runtime monitors as graph queries, which are evaluated over snapshots of the underlying runtime model of the system. Furthermore, we show how to derive deployable monitoring programs from high-level query specifications automatically.Then, worst-case execution time (WCET) analysis is presented for these auto-generated query-based runtime monitoring programs to enable their use in hard real-time settings. To achieve this, we provide two complementary approaches. One approach uses a combination of traditional static analysis-based WCET computation and a state-of-the-art graph generation technique to synthesize so-called witness models up to a given model size where the query program is estimated to have the highest (i.e., worst-case) run time. The other approach provides on-line (i.e., runtime) estimates of execution time for a query program over a specific model by using a symbolic formula which relies on condensed graph model metrics. Finally, we extend runtime models and queries to a distributed and resource-constrained setting. The runtime model is partitioned among the participating nodes in the platform, and it is consistently kept up-to-date in a continuously evolving environment by a time-triggered model management protocol. We provide a semantic treatment of distributed graph queries using 3-valued logic to incorporate uncertainties and delays in a semantically consistent way. Furthermore, our runtime models offer a (domain-specific) model query and manipulation interface over the reliable communication middleware of the Data Distribution Service (DDS) standard widely used in the CPS domain. For each contribution, we evaluate the feasibility and scalability of our approaches using prototype implementations in the context of the MoDeS3 educational CPS platform"--
Download or read book Distributed Computer Systems written by H. S. M. Zedan and published by Butterworth-Heinemann. This book was released on 2014-05-12 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Distributed Computer Systems: Theory and Practice is a collection of papers dealing with the design and implementation of operating systems, including distributed systems, such as the amoeba system, argus, Andrew, and grapevine. One paper discusses the concepts and notations for concurrent programming, particularly language notation used in computer programming, synchronization methods, and also compares three classes of languages. Another paper explains load balancing or load redistribution to improve system performance, namely, static balancing and adaptive load balancing. For program efficiency, the user can choose from various debugging approaches to locate or fix errors without significantly disturbing the program behavior. Examples of debuggers pertain to the ada language and the occam programming language. Another paper describes the architecture of a real-time distributed database system used for computer network management, monitoring integration, as well as administration and control of both local area or wide area communications networks. The book can prove helpful to programmers, computer engineers, computer technicians, and computer instructors dealing with many aspects of computers, such as programming, hardware interface, networking, engineering or design.
