To thoroughly understand what makes Linux tick and why it's so efficient, you need to delve deep into the heart of the operating system--into the Linux kernel itself. The kernel is Linux--in the case of the Linux operating system, it's the only bit of software to which the term "Linux" applies. The kernel handles all the requests or completed I/O operations and determines which programs will share its processing time, and in what order. Responsible for the sophisticated memory management of the whole system, the Linux kernel is the force behind the legendary Linux efficiency. The new edition of Understanding the Linux Kernel takes you on a guided tour through the most significant data structures, many algorithms, and programming tricks used in the kernel. Probing beyond the superficial features, the authors offer valuable insights to people who want to know how things really work inside their machine. Relevant segments of code are dissected and discussed line by line. The book covers more than just the functioning of the code, it explains the theoretical underpinnings for why Linux does things the way it does. The new edition of the book has been updated to cover version 2.4 of the kernel, which is quite different from version 2.2: the virtual memory system is entirely new, support for multiprocessor systems is improved, and whole new classes of hardware devices have been added. The authors explore each new feature in detail. Other topics in the book include: Memory management including file buffering, process swapping, and Direct memory Access (DMA) The Virtual Filesystem and the Second Extended Filesystem Process creation and scheduling Signals, interrupts, and the essential interfaces to device drivers Timing Synchronization in the kernel Interprocess Communication (IPC) Program execution Understanding the Linux Kernel, Second Edition will acquaint you with all the inner workings of Linux, but is more than just an academic exercise. You'll learn what conditions bring out Linux's best performance, and you'll see how it meets the challenge of providing good system response during process scheduling, file access, and memory management in a wide variety of environments. If knowledge is power, then this book will help you make the most of your Linux system.
In order to thoroughly understand what makes Linux tick and why it works so well on a wide variety of systems, you need to delve deep into the heart of the kernel. The kernel handles all interactions between the CPU and the external world, and determines which programs will share processor time, in what order. It manages limited memory so well that hundreds of processes can share the system efficiently, and expertly organizes data transfers so that the CPU isn't kept waiting any longer than necessary for the relatively slow disks. The third edition of Understanding the Linux Kernel takes you on a guided tour of the most significant data structures, algorithms, and programming tricks used in the kernel. Probing beyond superficial features, the authors offer valuable insights to people who want to know how things really work inside their machine. Important Intel-specific features are discussed. Relevant segments of code are dissected line by line. But the book covers more than just the functioning of the code; it explains the theoretical underpinnings of why Linux does things the way it does. This edition of the book covers Version 2.6, which has seen significant changes to nearly every kernel subsystem, particularly in the areas of memory management and block devices. The book focuses on the following topics: Memory management, including file buffering, process swapping, and Direct memory Access (DMA) The Virtual Filesystem layer and the Second and Third Extended Filesystems Process creation and scheduling Signals, interrupts, and the essential interfaces to device drivers Timing Synchronization within the kernel Interprocess Communication (IPC) Program execution Understanding the Linux Kernel will acquaint you with all the inner workings of Linux, but it's more than just an academic exercise. You'll learn what conditions bring out Linux's best performance, and you'll see how it meets the challenge of providing good system response during process scheduling, file access, and memory management in a wide variety of environments. This book will help you make the most of your Linux system.
Manuscript Poetics explores the interrelationship between the material features of textual artifacts and the literary aspects of the medieval Italian texts they preserve. This original study is both an investigation into the material foundations of literature and a reflection on notions of textuality, writing, and media in late medieval and early modern Italy. Francesco Marco Aresu examines the book-objects of manuscripts and early printed editions, asking questions about the material conditions of production, circulation, and reception of literary works. He invites scholars to reconcile reading with seeing (and with touching) and to challenge contemporary presumptions about technological neutrality and the modes of interfacing and reading. Manuscript Poetics investigates the correspondences between textuality and materiality, content and medium, and visual-verbal messages and their physical support through readings of Dante Alighieri’s Vita nova, Giovanni Boccaccio’s Teseida, and Francesco Petrarca’s canzoniere (Rerum vulgarium fragmenta). Aresu shows that Dante, Boccaccio, and Petrarca evaluated and deployed the tools of scribal culture to shape, signal, or layer meanings beyond those they conveyed in their written texts. Medieval texts, Aresu argues, are uniquely positioned to provide this perspective, and they are foundational to the theoretical understanding of new forms and materials in our media-saturated contemporary world.
A stark departure from traditional philology, What is Authorial Philology? is the first comprehensive treatment of authorial philology as a discipline in its own right. It provides readers with an excellent introduction to the theory and practice of editing ‘authorial texts’ alongside an exploration of authorial philology in its cultural and conceptual architecture. The originality and distinction of this work lies in its clear systematization of a discipline whose autonomous status has only recently been recognised (at least in Italy), though its roots may extend back as far as Giorgio Pasquali. This pioneering volume offers both a methodical set of instructions on how to read critical editions, and a wide range of practical examples, expanding upon the conceptual and methodological apparatus laid out in the first two chapters. By presenting a thorough account of the historical and theoretical framework through which authorial philology developed, Paola Italia and Giulia Raboni successfully reconceptualize the authorial text as an ever-changing organism, subject to alteration and modification. What is Authorial Philology? will be of great didactic value to students and researchers alike, providing readers with a fuller understanding of the rationale behind different editing practices, and addressing both traditional and newer methods such as the use of the digital medium and its implications. Spanning the whole Italian tradition from Petrarch to Carlo Emilio Gadda, this ground-breaking volume provokes us to consider important questions concerning a text’s dynamism, the extent to which an author is ‘agentive’, and, most crucially, about the very nature of what we read.
To thoroughly understand what makes Linux tick and why it's so efficient, you need to delve deep into the heart of the operating system--into the Linux kernel itself. The kernel is Linux--in the case of the Linux operating system, it's the only bit of software to which the term "Linux" applies. The kernel handles all the requests or completed I/O operations and determines which programs will share its processing time, and in what order. Responsible for the sophisticated memory management of the whole system, the Linux kernel is the force behind the legendary Linux efficiency. The new edition of Understanding the Linux Kernel takes you on a guided tour through the most significant data structures, many algorithms, and programming tricks used in the kernel. Probing beyond the superficial features, the authors offer valuable insights to people who want to know how things really work inside their machine. Relevant segments of code are dissected and discussed line by line. The book covers more than just the functioning of the code, it explains the theoretical underpinnings for why Linux does things the way it does. The new edition of the book has been updated to cover version 2.4 of the kernel, which is quite different from version 2.2: the virtual memory system is entirely new, support for multiprocessor systems is improved, and whole new classes of hardware devices have been added. The authors explore each new feature in detail. Other topics in the book include: Memory management including file buffering, process swapping, and Direct memory Access (DMA) The Virtual Filesystem and the Second Extended Filesystem Process creation and scheduling Signals, interrupts, and the essential interfaces to device drivers Timing Synchronization in the kernel Interprocess Communication (IPC) Program execution Understanding the Linux Kernel, Second Edition will acquaint you with all the inner workings of Linux, but is more than just an academic exercise. You'll learn what conditions bring out Linux's best performance, and you'll see how it meets the challenge of providing good system response during process scheduling, file access, and memory management in a wide variety of environments. If knowledge is power, then this book will help you make the most of your Linux system.
This book focuses on the development of the process of teaching and assessing foreign language competence for study purposes in a pluricultural and plurilingual context. It addresses not only the individual who is learning the language for academic purposes (LAP), but also other stakeholders, like teachers, schools and universities, and external boards, such as examination boards for language testing. The book highlights an ongoing research project at the University of Parma, Italy, aimed at developing teaching programs and evaluative tools for language for academic purposes. Starting from a reflection upon the nature of language for study purposes stemming from the tradition of English for Academic Purposes, it describes the model of an LAP test implemented in Italian secondary schools and universities, and shows the findings concerning the performance in the test of both students whose mother tongue is Indo-European and those who speak non-Indo-European languages.
This is the first comprehensive history of conscription and the military in Italy from the Restoration to the eve of WWI. The comparative and transnational approach enables this work to compare and contrast the Italian experience with that of many other countries in the world as well as understand transfers and the adaptive and imitative processes that emerge when conscription and the military are viewed from an Italian perspective. Peacetime and wartime recruitment, military life, culture, justice and civil-military relationships are analysed using a wide range of sources and an interdisciplinary approach that combines top-down and bottom-up perspectives. This enables the book not only to assess the contribution the military has made to the country in terms of state-building, nation building, modernization, pedagogical and disciplinary models, gender identity and roles, but also to reconsider the standard taxonomies as well as some established evolutionary models of the armies. Moreover, the Italian military is seen as an internally complex world that is incapable of defining its own one-dimensional identity or of imposing any such identity on its members. Consequently, it is an element in the history of a country that is substantially the same as any other such element and thus important in people’s collective and individual lives whether or not they are in uniform. Rather than being an object of study in and of itself, the military becomes a vantage point from which to observe the Italian history in the long 19th century. Therefore, this book can be profitably read by professional military historians and non-specialist readers interested in the military, as well as by all scholars working on Italian pre- and post-unification political, institutional, socio-economic, cultural and gender history.
Montenero Val Cocchiara is usually referred to simply as Montenero, or Mundunur in the local dialect. Montenero is a typical mountain village on the border of the Abruzzo and Molise regions, but it is more than that. Its history was tinted by contacts with numerous powerful groups over many centuries. The village and its people prove to be unique, but they also are highly embued with elements common to all in South Italy. Of course it is the hope of the author that anyone with roots in South Italy will benefit from reading this book. However, his much greater aspiration is that others will equally enjoy the story of Montenero as a metaphor of their own ancestral village or town, regardless of country or even see the village as a microcosm of the world where the forces of history and culture forge the character of people.
... and still we could never suppose that fortune were to be so friendly to us, such as to allow us to be perhaps the first in handling, as it were, the electricity concealed in nerves, in extracting it from nerves, and, in some way, in putting it under everyone's eyes." With these words, Luigi Galvani announced to the world in 1791 his discovery that nervous conduction and muscle excitation are electrical phenomena. The result of more than years of intense experimental work, Galvani's milestone achievement concluded a thousand-year scientific search, in a field long dominated by the antiquated beliefs of classical science. Besides laying the grounds for the development of the modern neurosciences, Galvani's discovery also brought to light an invention that would forever change humankind's everyday life: the electric battery of Alessandro Volta. In an accessible style, written for specialists and general readers alike, Shocking Frogs retraces the steps of both scientific discoveries, starting with the initial hypotheses of the Enlightenment on the involvement of electricity in life processes. So doing, it also reveals the inconsistency of the many stereotypes that an uncritical cultural tradition has imparted to the legacies of Galvani and Volta, and proposes a decidedly new image of these monumental figures.
Why is the history of art so often construed as a history of artists, when its alleged focus is art? This book responds to this question by examining Giorgio Vasari's Lives and the artist it features most centrally, Michelangelo. More than any other artist in the Lives, Michelangelo exemplifies art as an expression of the individual. Yet at the same time, as this book aims to show, the Lives fashions Michelangelo as the founder of a new academic era in which art develops collectively as a discipline. Paradoxically, Vasari's celebration of Michelangelo mobilizes a conception of art as teachable and transmissible that is antithetical to Michelangelo's aesthetic ideals and unique style."--Page 4 of cover.
In order to thoroughly understand what makes Linux tick and why it works so well on a wide variety of systems, you need to delve deep into the heart of the kernel. The kernel handles all interactions between the CPU and the external world, and determines which programs will share processor time, in what order. It manages limited memory so well that hundreds of processes can share the system efficiently, and expertly organizes data transfers so that the CPU isn't kept waiting any longer than necessary for the relatively slow disks. The third edition of Understanding the Linux Kernel takes you on a guided tour of the most significant data structures, algorithms, and programming tricks used in the kernel. Probing beyond superficial features, the authors offer valuable insights to people who want to know how things really work inside their machine. Important Intel-specific features are discussed. Relevant segments of code are dissected line by line. But the book covers more than just the functioning of the code; it explains the theoretical underpinnings of why Linux does things the way it does. This edition of the book covers Version 2.6, which has seen significant changes to nearly every kernel subsystem, particularly in the areas of memory management and block devices. The book focuses on the following topics: Memory management, including file buffering, process swapping, and Direct memory Access (DMA) The Virtual Filesystem layer and the Second and Third Extended Filesystems Process creation and scheduling Signals, interrupts, and the essential interfaces to device drivers Timing Synchronization within the kernel Interprocess Communication (IPC) Program execution Understanding the Linux Kernel will acquaint you with all the inner workings of Linux, but it's more than just an academic exercise. You'll learn what conditions bring out Linux's best performance, and you'll see how it meets the challenge of providing good system response during process scheduling, file access, and memory management in a wide variety of environments. This book will help you make the most of your Linux system.
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