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In-depth understanding of computer systems of the original book version 2 watercressFrom the programmer's perspective the book elaborates the nature of the concept of a computer system, and show how these concepts actually affect application correctness, performance and practicality. The book is 12 chapters, including the representation and processing of information, the program of the machine-level representation, processor architecture, optimizing application performance, memory hierarchy, linking, exceptional control flow, virtual memory, system-level I / O, network programming concurrent programming. The book provides plenty of examples and exercises, and gives some answers to help readers deepen their understanding of concepts and knowledge described in the text to understand the book's biggest advantage is for the programmer to describe the implementation details of a computer system to help them in the brain construct a hierarchical computer system from the underlying data in-memory representation of the pipeline command structure, to the virtual memory to compile the system to dynamically load libraries, to the final user mode applications. By mastering process is mapped to the system, and how the program is executed, the reader can better understand the behavior of the program why this is, and how the inefficiencies caused by the book for those who want to write faster, more reliable programmer to read, also suitable as high.(Expand All)From the programmer's perspective the book elaborates the nature of the concept of a computer system, and show how these concepts actually affect application correctness, performance and practicality. The book is 12 chapters, including the representation and processing of information, the program of the machine-level representation, processor architecture, optimizing application performance, memory hierarchy, linking, exceptional control flow, virtual memory, system-level I / O, network programming concurrent programming. The book provides plenty of examples and exercises, and gives some answers to help readers deepen their understanding of concepts and knowledge described in the text to understand the book's biggest advantage is for the programmer to describe the implementation details of a computer system to help them in the brain construct a hierarchical computer system from the underlying data in-memory representation of the pipeline command structure, to the virtual memory to compile the system to dynamically load libraries, to the final user mode applications. By mastering process is mapped to the system, and how the program is executed, the reader can better understand the behavior of the program why this is, and how the inefficiencies caused by the book for those who want to write faster, more reliable programmer to read, also suitable as a computer and related professional undergraduate colleges, graduate teaching P1 must begin now an interesting history of roaming. If you are fully engaged in the concept of the book, fully understand the underlying computer systems and its impact on the application, you will gradually become scarcer authority Programmer Here are some conceptual things, some I tend to forget, some previously unfamiliar, finishing under P3 assembly language is very useful, because it's different for different high-level language compiler provides a common output language P4 shell (shell) is a command-line interpreter, it outputs a prompt and wait you enter a command line, and then run this command differentiate instruction set processor architecture and micro-architecture: instruction set architecture describes each machine instruction code instructions effects; while the micro-architecture describes how the processor is actually implementation of the operating system to achieve staggered implementation mechanisms (switching between processes) is called a context switch P13 kernel is always resident in memory, is part of the OS P16 If the processor can reach more than one clock cycle an instruction execution rate faster , it is called superscalar (superscalar) processors P18 operating system kernel is between applications and hardware medium. It provides three basic abstraction: 1) file is the I / O device abstraction; 2) Virtual memory is a main memory and disk abstract; 3) The process of the processor, main memory and I / O devices abstraction P1 must begin now an interesting history of roaming. If you are fully engaged in the concept of the book, fully understand the underlying computer systems and its impact on the application, you will gradually become scarcer authority Programmer Here are some conceptual things, some I tend to forget, some previously unfamiliar, finishing under P3 assembly language is very useful, because it's different for different high-level language compiler provides a common output language P4 shell (shell) is a command-line interpreter, it outputs a prompt and wait you enter a command line, and then run this command differentiate instruction set processor architecture and micro-architecture: instruction set architecture describes each machine instruction code instructions effects; while the micro-architecture describes how the processor is actually achieved.