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[Linux-Unix] main DL : 0: 操作系统实验（LINUX）：设计一个虚拟存储区和内存工作区,并使用下列算法计算访问命中率. （1）进先出的算法（FIFO）（2）最近最少使用的算法（LRU）（3）最佳淘汰算法(OPT) （4）最少访问页面算法(LFU) （5）最近最不经常使用算法(NUR) 命中率=(1-页面失效次数)/页地址流长度 -Experimental operating system (LINUX): Design of a virtual memory storage area and work area, and use the following algorithm to visit hit rate. (1) into the algorithm, first-out (FIFO) (2) at least recently used algorithm (LRU) (3 ) the best out of algorithm (OPT) (4) at least visit the page algorithm (LFU) (5) the least frequently used in recent algorithm (NUR) hit rate = (1- page failure number)/page address stream length
Date : 2026-01-11 Size : 2kb User : zengzl
[Linux-Unix] vm DL : 0: Linux的虚拟内存管理书籍，英文版，将虚拟地址，物理地址，页表等说明得不错的一本书。-Linux virtual memory management books, the English version, the virtual address, physical address, page table, such as a good description of a book.
Date : 2026-01-11 Size : 1.42mb User : testpudn
[Linux-Unix] linux_mem_map DL : 0: 本文针对市场上流行的嵌入式ARM9处理器，分析其MMU功能单元以及其SOC 平台在LINUX内核中的实现地址映射过程。总结内核建立虚拟内存的一般过程和基本思想 -In this paper, the popular embedded ARM9 processor, MMU analysis of their functional unit and its SOC platform realize LINUX kernel address mapping process. Summing up the kernel virtual memory to establish the general process and the basic idea
Date : 2026-01-11 Size : 233kb User : pengkohuang
[Linux-Unix] mmap DL : 0: 将内核空间vmalloc后不连续的内存地址映射到用户空间的驱动程序，2.4内核和2.6内核两个版本，学内存分配必备资料。看完后就了解mmap原理了-Vmalloc kernel space will not be straight after the memory address is mapped to the user space driver, 2.4 kernel and 2.6 kernel versions, learning the necessary information on memory allocation. After reading to understand the principle of the mmap
Date : 2026-01-11 Size : 8kb User : susanner
[Linux-Unix] linux_kernel_comments DL : 0: 80386是一种先进的32位微处理器的多任务优化操作系统和应用需要很高的设计性能。 32位寄存器和数据路径支持32位地址和数据类型。该处理器可以处理多达4 GB的物理内存和64兆兆字节（246字节的虚拟内存）。片上内存管理的设施包括：地址转换寄存器，先进的多任务硬件，一个保护机制，分页的虚拟内存。特别调试寄存器提供的数据和代码甚至断点 ROM中的软件。-80386 is an advanced 32-bit microprocessor optimized for multi-tasking operating systems and applications require high design performance. 32-bit registers and data path supports 32-bit address and data types. The processor can handle up to 4 GB of physical memory and 64 terabytes (246 bytes of virtual memory). On-chip memory management facilities, including: address translation registers, advanced multi-tasking hardware, a protection mechanism, the paging virtual memory. Special debugging registers the data and code breakpoints ROM or even in software.
Date : 2026-01-11 Size : 7.07mb User : thinkinweb
[Linux-Unix] mmap-nopage.tar DL : 0: nopage 方式的内存映射机制，完成用户空间和内核空间的地址转化，多用户空间的数据交换-nopage way of memory mapping mechanism, the completion of the user' s address space and kernel space conversion, multi-user spatial data exchange
Date : 2026-01-11 Size : 6kb User : brucefan
[Linux-Unix] sharedm DL : 0: 用共享存储区方式实现多个进程的通信程序：该程序通过shmget()函数创建共享存储区，将一个字符串指针指向该存储区的起始地址，然后通过fork()创建两个子进程，通过对该字符串指针的读写达到多进程间的通信。程序中使用sleep()函数调节各进程对共享存储区的读写操作顺序。-With the shared memory area where multiple processes of communication program: the program through the shmget () function, create a shared memory area, a string pointer to the starting address of the store, and then fork () to create two sub-processes, through the read and write pointers to the strings to achieve more inter-process communication. Program, using the sleep () function of regulating the various processes on the shared storage area in order to read and write operations.
Date : 2026-01-11 Size : 1kb User : JK
[Linux-Unix] webapp DL : 0: The most widely supported form of IO is memory mapped IO. That is, a part of the CPU’s address space is interpreted not as accesses to memory, but as accesses to a device. Some architectures define devices to be at a fixed address, but most have some method of discovering devices.
Date : 2026-01-11 Size : 50kb User : madhu
[Linux-Unix] serial_driver DL : 0: Another form of IO commonly supported is Port Space. This is a range of addresses different from the normal memory address space.
Date : 2026-01-11 Size : 2kb User : madhu
[Linux-Unix] xv6-lab2 DL : 1: 清华大学陈渝老师在xv6基础上开发的实验环境，内存管理部分。pudn上有了lab3-7但是没有lab2，而lab2是最重要的一个环节-地址间的转换和pdt pte的实现-CHEN Yu Tsinghua University teachers xv6 developed on the basis of the experimental environment, the memory management component. pudn on with lab3-7 but not lab2, but lab2 is the most important aspect- Address pdt pte between conversion and implementation, etc.
Date : 2026-01-11 Size : 158kb User : 红烧鱼
[Linux-Unix] memshare DL : 0: 本代码是用户态和内核态通信的一种实现方式。用户态通过与内核态共享内存来访问内核态数据。内核态共享内存的地址通过netlink传递给用户态。-this code is a communication method between user space and kernel space.user space access kernel data through shared memory.the address of shared memory created in kernel space is passed to user space through netlink beforehand.
Date : 2026-01-11 Size : 11kb User : vividonly
[Linux-Unix] linux_de_xuexi DL : 0: 嵌入式系统的基础知识对于一台内存为256M的32bit x86主机来说，它的虚拟地址空间范围是-Basics of embedded system memory for a host for the 256M' s 32bit x86, it is the range of virtual address space
Date : 2026-01-11 Size : 6kb User : 赵
[Linux-Unix] Linux-Kernel-Development DL : 0: Unix 内核开发，目录如下： Contents at a Glance 1 Introduction to the Linux Kernel 1 2 Getting Started with the Kernel 11 3 Process Management 23 4 Process Scheduling 41 5 System Calls 69 6 Kernel Data Structures 85 7 Interrupts and Interrupt Handlers 113 8 Bottom Halves and Deferring Work 133 9 An Introduction to Kernel Synchronization 161 10 Kernel Synchronization Methods 175 11 Timers and Time Management 207 12 Memory Management 231 13 The Virtual Filesystem 261 14 The Block I/O Layer 289 15 The Process Address Space 305 16 The Page Cache and Page Writeback 323 17 Devices and Modules 337 18 Debugging 363 19 Portability 379 20 Patches, Hacking, and the Community 395 Bibliography 407 Index 4-Unix 内核开发，目录如下： Contents at a Glance 1 Introduction to the Linux Kernel 1 2 Getting Started with the Kernel 11 3 Process Management 23 4 Process Scheduling 41 5 System Calls 69 6 Kernel Data Structures 85 7 Interrupts and Interrupt Handlers 113 8 Bottom Halves and Deferring Work 133 9 An Introduction to Kernel Synchronization 161 10 Kernel Synchronization Methods 175 11 Timers and Time Management 207 12 Memory Management 231 13 The Virtual Filesystem 261 14 The Block I/O Layer 289 15 The Process Address Space 305 16 The Page Cache and Page Writeback 323 17 Devices and Modules 337 18 Debugging 363 19 Portability 379 20 Patches, Hacking, and the Community 395 Bibliography 407 Index 411
Date : 2026-01-11 Size : 1.84mb User : ziv.han
[Linux-Unix] nmap DL : 0: linux2.4.37的内存镜像文件，可以实现内存地址的转换-linux2.4.37 memory image file, the memory address translation can be achieved
Date : 2026-01-11 Size : 9kb User : lin jian
[Linux-Unix] fifo DL : 0: 一个循环线性地址先进先出队列(FIFO)，非常适合用做通讯、任务等，具有如下特点： 1.循环队列，空间利用率非常高，不用动态分配内存，不使用链表，无内存泄漏，无内存碎片； 2.线性地址空间，直接使用memcpy进出，速度非常快；使用说明： 1.fifo_init 2.fifo_into 2.fifo_get 3.fifo_remove 4.fifo_uninit 如发现问题联系本人： lxj_com@163.com QQ:67016879-A loop linear address FIFO queue (FIFO), is used for communication tasks, with the following characteristics: 1. Circular queue, space utilization is very high, do not dynamically allocate memory, do not use the list, no memory leaks, No memory fragmentation 2. linear address space, and out of direct use of memcpy is very fast instructions: 1.fifo_init 2.fifo_into 2.fifo_get 3.fifo_remove 4.fifo_uninit such as problem contact me: lxj_com@163.com QQ : 67016879
Date : 2026-01-11 Size : 17kb User : long
[Linux-Unix] Linux-driver-development11 DL : 0: 作者：华清远见嵌入式学院。《Linux设备驱动开发详解》（08&09年度畅销榜TOP50）第11章、内存与I/O访问。由于Linux系统中提供了复杂的内存管理功能，所以内存的概念在Linux系统中变得相对复杂，出现了常规内存、高端内存、虚拟地址、逻辑地址、总线地址、物理地址、I/O内存、设备内存、预留内存等概念。本章将系统地讲解内存和I/O的访问编程，带您走出内存和I/O的概念迷宫。11.1节讲解内存和I/O的硬件机制，主要涉及内存空间、I/O空间和MMU。11.2节讲解Linux的内存管理、内存区域的分布、常规内存与高端内存的区别。11.3节讲解Linux内存存取的方法，主要涉及内存动态申请以及通过虚拟地址存取物理地址的方法。11.4节讲解设备I/O内存和I/O端口的访问流程，这一节对于编写设备驱动意义非常重大，设备驱动使用此节的方法访问物理设备。11.5节讲解设备驱动中的DMA与CACHE一致性问题以及DMA编程方法。-Author: HuaQing vision embedded institute. The Linux device driver development "(08 and 09 sep TOP50) annual list of best-selling chapter 11, the memory and I/O visit. Because of the complex Linux system provide the memory management function, so the concept of memory in Linux systems become relatively complex, the emergence of a conventional memory, the high memory, virtual address, logical address, bus address, physical address, I/O memory, equipment memory, obligate concepts such as memory. This chapter will systematically explaining memory and I/O visit programming, take you out of memory and I/O concept maze. Section 11.1 explain memory and I/O hardware mechanism, mainly involves the memory space, I/O space and MMU. Section 11.2 explain the Linux memory management, memory area distribution, conventional memory and the high memory difference. Section 11.3 memory access method explained Linux, Lord ?
Date : 2026-01-11 Size : 643kb User : 华清远见
[Linux-Unix] VMM.doc.tar DL : 0: 虚拟内存管理实例，用于显示当前有哪些进程占用内存，及其所在的逻辑地址-Instance of the virtual memory management, which is used to display the current process footprint, and where the logical address
Date : 2026-01-11 Size : 7kb User :
[Linux-Unix] linux DL : 0: 当PC启动时,Intel系列的CPU首先进入的是16位实地址模式,并开始执行位于内存地址0xFFFF：0000处的代码,也就是ROM-BIOS起始位置的代码。-When the PC starts, CPU of Intel series what to get into is 16 on-the-spot address modes first, and start carrying out to be located in a memory address 0 xFFFFs:0000 codes is also the code of ROM-BIOS start position.
Date : 2026-01-11 Size : 132kb User : feng
[Linux-Unix] tz DL : 0: 雅黑科技PHP探针最大的优点：每秒更新，不用刷网页。有一个负责的站长，会对探针进行长期支持和更新。用于Linux系统（不推荐使用于Windows系统）。可以实时查看服务器硬盘资源、内存占用、网卡流量、系统负载、服务器时间等信息，1秒钟刷新一次。以及包括服务器IP地址，Web服务器环境监测，php等信息。雅黑PHP探针 0.4.2 更新记录： 2012-04-15 发布0.4.2版本，感谢小松反馈探针发送邮件时，如果web服务器端口非80时，发送的邮件标题忽略端口号，现已修复。还有感谢charwin提供检测-Ya Black Technology PHP probe of the biggest advantages: updates per second, not brush pages. There are a responsible webmaster, will probe the long-term support and updates. For Linux systems (not recommended for use on Windows systems). You can view the server hard disk resources and memory usage, NIC traffic, system load, the server time in real time, 1 second refresh. Including the server IP address, the Web server environment monitoring, php and other information. Elegant black probe PHP 0.4.2 update records: 2012-04-15 release 0.4.2, thanks for the the Komatsu feedback probe to send mail, the web server port non-80, sent the message header to ignore the port number has been repaired . There thank charwin provide detection
Date : 2026-01-11 Size : 45kb User : taoxin
[Linux-Unix] Linux-memory-management DL : 0: Linux内存管理,物理内存、虚拟内存。物理地址，虚拟地址，线性地址等等之间的关系。-Linux memory management, physical memory, virtual memory. Physical address, the virtual address, so the relationship between the linear address.
Date : 2026-01-11 Size : 175kb User : 刘通

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