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Author: Mendel Rosenblum
Publisher:
ISBN:
Category : File organization (Computer science)
Languages : en
Pages : 448
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Book Description
I have implemented a prototype log-structured file system called Sprite LFS; it outperforms current Unix file systems by an order of magnitude for small-file writes and matches or exceeds Unix performance for reads and large writes. Even when the overhead for cleaning is included, Sprite LFS can use 70% of the disk bandwidth for writing. Unix file systems typically can use only 5-10%.
Author: Mendel Rosenblum
Publisher:
ISBN:
Category : File organization (Computer science)
Languages : en
Pages : 448
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Book Description
I have implemented a prototype log-structured file system called Sprite LFS; it outperforms current Unix file systems by an order of magnitude for small-file writes and matches or exceeds Unix performance for reads and large writes. Even when the overhead for cleaning is included, Sprite LFS can use 70% of the disk bandwidth for writing. Unix file systems typically can use only 5-10%.
Author: Mendel Rosenblum
Publisher: Springer
ISBN: 9781461359333
Category : Computers
Languages : en
Pages : 132
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Book Description
Computersystemsresearch is heavilyinfluencedby changesincomputertechnol ogy. As technology changes alterthe characteristics ofthe underlying hardware com ponents of the system, the algorithms used to manage the system need to be re examinedand newtechniques need to bedeveloped. Technological influencesare par ticularly evident in the design of storage management systems such as disk storage managers and file systems. The influences have been so pronounced that techniques developed as recently as ten years ago are being made obsolete. The basic problem for disk storage managers is the unbalanced scaling of hard warecomponenttechnologies. Disk storage managerdesign depends on the technolo gy for processors, main memory, and magnetic disks. During the 1980s, processors and main memories benefited from the rapid improvements in semiconductortechnol ogy and improved by several orders ofmagnitude in performance and capacity. This improvement has not been matched by disk technology, which is bounded by the me chanics ofrotating magnetic media. Magnetic disks ofthe 1980s have improved by a factor of 10in capacity butonly a factor of2 in performance. This unbalanced scaling ofthe hardware components challenges the disk storage manager to compensate for the slower disks and allow performance to scale with the processor and main memory technology. Unless the performance of file systems can be improved over that of the disks, I/O-bound applications will be unable to use the rapid improvements in processor speeds to improve performance for computer users. Disk storage managers must break this bottleneck and decouple application perfor mance from the disk.
Author: Marshall Kirk McKusick
Publisher: Addison-Wesley Professional
ISBN: 0321680030
Category : Computers
Languages : en
Pages : 935
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Book Description
As in earlier Addison-Wesley books on the UNIX-based BSD operating system, Kirk McKusick and George Neville-Neil deliver here the most comprehensive, up-to-date, and authoritative technical information on the internal structure of open source FreeBSD. Readers involved in technical and sales support can learn the capabilities and limitations of the system; applications developers can learn effectively and efficiently how to interface to the system; system administrators can learn how to maintain, tune, and configure the system; and systems programmers can learn how to extend, enhance, and interface to the system. The authors provide a concise overview of FreeBSD's design and implementation. Then, while explaining key design decisions, they detail the concepts, data structures, and algorithms used in implementing the systems facilities. As a result, readers can use this book as both a practical reference and an in-depth study of a contemporary, portable, open source operating system. This book: Details the many performance improvements in the virtual memory system Describes the new symmetric multiprocessor support Includes new sections on threads and their scheduling Introduces the new jail facility to ease the hosting of multiple domains Updates information on networking and interprocess communication Already widely used for Internet services and firewalls, high-availability servers, and general timesharing systems, the lean quality of FreeBSD also suits the growing area of embedded systems. Unlike Linux, FreeBSD does not require users to publicize any changes they make to the source code.
Author: Sri Niwas Singh
Publisher: Springer Nature
ISBN: 9819916992
Category : Technology & Engineering
Languages : en
Pages : 724
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Book Description
The book presents selected papers from NIELIT's International Conference on Communication, Electronics and Digital Technology (NICE-DT 2023) held during February 10–11, 2023, in New Delhi, India. The book covers state-of-the-art research insights on artificial intelligence, machine learning, big data, data analytics, cyber security and forensic, network and mobile security, advance computing, cloud computing, quantum computing, VLSI and semiconductors, electronics system, Internet of Things, robotics and automations, blockchain and software technology, digital technologies for future, assistive technology for divyangjan (people with disabilities) and Strategy for Digital Skilling for building a global Future Ready workforce.
Author: Sukhan Lee
Publisher: Springer
ISBN: 3030190633
Category : Technology & Engineering
Languages : en
Pages : 1134
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Book Description
Over past few years, technologies have experienced boundaries getting blurred and concept of convergence to gain prominence. Harnessing from this, two main tracks for information processing management and communication are held, covering both research and application works of information management, intelligent information processing, interaction management, networking/ telecommunications, and social interaction. This book creates unique opportunity for research convergence among truly diverse technology domains of computer science. Leveraging from this diversity of topics, researchers get to generate novel research ideas by seeking application of their research in a different technology domain. This volume represents the collection of papers presented at the 13th International Conference on Ubiquitous Information Management and Communication (IMCOM 2019), held on 4-6 January 2019 in Phuket, Thailand. Out of 228 papers submitted from all around the world 88 papers were accepted for presentations. The 88 contributions to this volume are organized into 5 chapters: Chapter 1. Network Evolution, Chapter 2. Intelligent and Secure Network, Chapter 3. Image and Video Processing, Chapter 4. Information Technology and Society, and Chapter 5. Data Mining and Learning. Our editors wish readers to find this volume informative and enjoyable.
Author: Remzi H. Arpaci-Dusseau
Publisher: Createspace Independent Publishing Platform
ISBN: 9781985086593
Category : Operating systems (Computers)
Languages : en
Pages : 714
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Book Description
"This book is organized around three concepts fundamental to OS construction: virtualization (of CPU and memory), concurrency (locks and condition variables), and persistence (disks, RAIDS, and file systems"--Back cover.
Author: Ben Kobler
Publisher:
ISBN:
Category : Computer storage devices
Languages : en
Pages : 360
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Book Description
Author: Steven R. Soltis
Publisher:
ISBN:
Category :
Languages : en
Pages : 256
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Book Description
Author: Jalil Boukhobza
Publisher: Elsevier
ISBN: 008101158X
Category : Technology & Engineering
Languages : en
Pages : 268
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Book Description
4 zettabytes (4 billion terabytes) of data generated in 2013, 44 zettabytes predicted for 2020 and 185 zettabytes for 2025. These figures are staggering and perfectly illustrate this new era of data deluge. Data has become a major economic and social challenge. The speed of processing of these data is the weakest link in a computer system: the storage system. It is therefore crucial to optimize this operation. During the last decade, storage systems have experienced a major revolution: the advent of flash memory. Flash Memory Integration: Performance and Energy Issues contributes to a better understanding of these revolutions. The authors offer us an insight into the integration of flash memory in computer systems, their behavior in performance and in power consumption compared to traditional storage systems. The book also presents, in their entirety, various methods for measuring the performance and energy consumption of storage systems for embedded as well as desktop/server computer systems. We are invited on a journey to the memories of the future. - Ideal for computer scientists, featuring low level details to concentrate on system issues - Tackles flash memory aspects while spanning domains such as embedded systems and HPC - Contains an exhaustive set of experimental results conducted in the Lab-STICC laboratory - Provides details on methodologies to perform performance and energy measurements on flash storage systems
Author: Antonio Albano
Publisher: Springer Science & Business Media
ISBN: 1447132092
Category : Computers
Languages : en
Pages : 456
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Book Description
