Location:
Search - fifo lru random
Search list
Description: 功能介绍：
l 输入进程P总共有的页面数，l 并输入系统已经在内存中分配的页面数。当所分配的页面数大于进程P的页面数时，l 则不l 需要进行页面调度工作。
l 由进程P的页面数目，l 程序随机生成一些访问内存的页面号，l 为简化程序，l 这些页面号的数目同l 进程P的进程数目一致（这个缺陷也有待改进）。
l 由用户选择FIFO算法还是LRU算法对进程P的页面访问内存分配的页面进行分配，l 并输出具体的页面访问过程。
原理介绍：
请求页式管理中的置换算法：置换算法在内存中没有空闲页面时调用。它的目的是选出一个被淘汰的页面。如果内存中有足够的空闲页面存放所调入的页，则不必使用置换算法。
先进先出算法FIFO：该算法总是选择在内存驻留时间最长的一页将其淘汰。其认为先调入内存的页不再被访问的可能性要比其他页大，因而选择最先调入内存的页换出。
最近最久没使用页面淘汰算法LRU-functional presentations : 1 P process imported a total of some pages. l and enter the system has been allocated in memory of a few pages. When the distribution of more than a few pages of the process P pages, l l not need pages scheduling work. L P process by the number of pages, l procedures for random number generation to the memory pages, l To simplify procedures, l these pages, with the number of P l process consistent number of processes (the defect has yet to be improved). L chosen by the user FIFO or LRU algorithm algorithm to process P pages allocated to the memory pages for distribution, l and output specific pages course of the visit. Principle introduced : request for the page-style management of replacement algorithm : Replacement Algorithms in memory when no spare pages call.
Platform: |
Size: 82885 |
Author: 角斗士 |
Hits:
Description: 演示了linux下的常用页面置换算法（FIFO,LRU,OPT,LFU,NUR），并计算了相应的命中率。程序用随机函数产生指令序列，然后变换成相应的页地址流。-demonstration of the commonly used algorithm replacement pages (FIFO, the LRU, OPT, LFU, NUR), and calculated the corresponding hit rate. Procedures used functions to generate random instruction sequences, and then converted into the corresponding page addresses flow.
Platform: |
Size: 1866 |
Author: 衣明玉 |
Hits:
Description: 演示了linux下的常用页面置换算法（FIFO,LRU,OPT,LFU,NUR），并计算了相应的命中率。程序用随机函数产生指令序列，然后变换成相应的页地址流。-demonstration of the commonly used algorithm replacement pages (FIFO, the LRU, OPT, LFU, NUR), and calculated the corresponding hit rate. Procedures used functions to generate random instruction sequences, and then converted into the corresponding page addresses flow.
Platform: |
Size: 2048 |
Author: 衣明玉 |
Hits:
Description: 功能介绍：
l 输入进程P总共有的页面数，l 并输入系统已经在内存中分配的页面数。当所分配的页面数大于进程P的页面数时，l 则不l 需要进行页面调度工作。
l 由进程P的页面数目，l 程序随机生成一些访问内存的页面号，l 为简化程序，l 这些页面号的数目同l 进程P的进程数目一致（这个缺陷也有待改进）。
l 由用户选择FIFO算法还是LRU算法对进程P的页面访问内存分配的页面进行分配，l 并输出具体的页面访问过程。
原理介绍：
请求页式管理中的置换算法：置换算法在内存中没有空闲页面时调用。它的目的是选出一个被淘汰的页面。如果内存中有足够的空闲页面存放所调入的页，则不必使用置换算法。
先进先出算法FIFO：该算法总是选择在内存驻留时间最长的一页将其淘汰。其认为先调入内存的页不再被访问的可能性要比其他页大，因而选择最先调入内存的页换出。
最近最久没使用页面淘汰算法LRU-functional presentations : 1 P process imported a total of some pages. l and enter the system has been allocated in memory of a few pages. When the distribution of more than a few pages of the process P pages, l l not need pages scheduling work. L P process by the number of pages, l procedures for random number generation to the memory pages, l To simplify procedures, l these pages, with the number of P l process consistent number of processes (the defect has yet to be improved). L chosen by the user FIFO or LRU algorithm algorithm to process P pages allocated to the memory pages for distribution, l and output specific pages course of the visit. Principle introduced : request for the page-style management of replacement algorithm : Replacement Algorithms in memory when no spare pages call.
Platform: |
Size: 82944 |
Author: |
Hits:
Description: 1.用随机数方法产生页面走向，页面走向长度为L(15<=L<=20),L由控制台输入。
2.根据页面走向，分别采用Optinal、FIFO、LRU算法进行页面置换，统计缺页率。
3.假定可用内存块为m(3<=m<=5)，m由控制台输入，初始时，作业页面都不在内存。
-1. Using random number methods to generate the page, the page length to L (15 <= L <= 20), L from the console input. 2. According to the page to, respectively, using Optinal, FIFO, LRU page replacement algorithm, statistical missing-page rate. 3. Assumed that the available memory block for m (3 <= m <= 5), m from the console input, the initial operation page not in memory.
Platform: |
Size: 2048 |
Author: 周哲 |
Hits:
Description: 存储管理中页面置换算法性能测试
要求：设系统采用固定分配局部置换的存储分配策略，编写仿真程序对下述页面
置换算法进行性能测试，并对结果进行分析和比较。
(1) 最佳适应(Optimal)页面置换算法；
(2) 先进先出(FIFO)页面置换算法；
(3) 最近最久未使用(LRU)页面置换算法；
(4) 最少使用(LFU)页面置换算法。
要求可适用于键盘输入和自动产生随机页面走向序列两种数据输入方式。-Memory management page replacement algorithm in the performance testing requirements: system for the distribution of partial replacement of fixed storage allocation strategy, the preparation of simulation program on the following page replacement algorithm performance testing, and the results were analyzed and compared. (1) the best adaptation (Optimal) page replacement algorithm (2) First In First Out (FIFO) page replacement algorithm (3) the most recent use of long (LRU) page replacement algorithm (4) use at least (LFU) page replacement algorithm. Requirements applicable to the keyboard input and automatically generated pages to a random sequence of two data entry methods.
Platform: |
Size: 2048 |
Author: pauly_917 |
Hits:
Description: 存储管理的主要功能之一是合理地分配空间。请求页式管理是一种常用的虚拟存储管理技术。
本实验的目的是通过请求页式存储管理中页面置换算法模拟设计，了解虚拟存储技术的特点，掌握请求页式管理的页面置换算法。
随机数产生一个指令序列，共320条指令，使用FIFO算法、LRU算法和OPT算法进行页面置换。-One of the main functions of storage management is a reasonable allocation of space. The requested page style management is a common virtual storage management technology. The purpose of this study is to page through the storage management request page replacement algorithm in the analog design, to understand the characteristics of virtual storage, master pages requested page style management replacement algorithm. Generate a sequence of random numbers, a total of 320 instructions, using FIFO algorithm, LRU algorithm and OPT page replacement algorithm.
Platform: |
Size: 2048 |
Author: 神 |
Hits:
Description: 五种页面替换算法比较，包括最佳，fifo,lru,random,clock-Comparison of the five page replacement algorithms
Platform: |
Size: 201728 |
Author: lyan |
Hits:
Description: 操作系统页面置换模拟系统
本软件模拟操作系统的页面置换，共有FIFO、LRU、OPT三种算法可供选择。用户可自行选择随机或手动输入指令序列的地址，本系统将自动显示各种算法的缺页率，以及那一条指令导致缺页-Analog system operating system page replacement operating system, the software simulate page replacement, total FIFO, LRU, OPT three algorithms to choose from. Users can choose a random sequence of instructions or manually enter the address, the system will automatically display the page fault rate of the algorithm, and the instructions which lead to missing pages
Platform: |
Size: 62464 |
Author: xuzekun |
Hits:
Description: 页面置换算法的实现。里面包含了 LRU ,FIFO, 简单CLOCK，改进的CLOCK,OPT，随机算法这几种算法，然后根据情况选择算法。 -Page replacement algorithm. Which contains the LRU, FIFO, simple and CLOCK to improved CLOCK, OPT, random selection algorithm algorithm for these types of algorithms, and then depending on the circumstances.
Platform: |
Size: 2048 |
Author: 王心 |
Hits:
Description: 存储管理中页面置换算法性能测试
要求：设系统采用固定分配局部置换的存储分配策略，编写仿真程序对下述页面
置换算法进行性能测试，并对结果进行分析和比较。
(1) 最佳适应(Optimal)页面置换算法；
(2) 先进先出(FIFO)页面置换算法；
(3) 最近最久未使用(LRU)页面置换算法；
(4) 最少使用(LFU)页面置换算法。
要求可适用于键盘输入和自动产生随机页面走向序列两种数据输入方式。-Page replacement algorithm performance testing requirements in the storage management: Let the system using the partial replacement of the fixed allocation of memory allocation strategy, the preparation of the simulation program on the following page replacement algorithm for performance testing, and the results were analyzed and compared. (1) the best fit (Optimal) page replacement algorithm (2) First In First Out (FIFO) page replacement algorithm (3) the most-recently-used (LRU) page replacement algorithm (4) at least one (LFU) page replacement algorithm. Requirements applicable to the keyboard input and automatically generates a random page toward the sequence of the two data input.
Platform: |
Size: 1777664 |
Author: 周明明 |
Hits:
Description: 1) 通过随机数产生一个指令序列，共320条指令
2) 将指令序列变换成页地址流
3) 计算并输出下述各种算法在不同内存容量下的命中率。
① 先进先出的算法（FIFO）；
② 最近最少使用算法（LRU）；
③ 最佳淘汰算法（OPT）；-1) by a random number to generate a sequence of instructions, a total of 320 instructions) instruction sequence is converted into the page address stream 3) Calculate and output the following various algorithms hit rate under different memory capacity. ① The algorithm of the first-in, first-out (FIFO) ② The least recently used algorithm (LRU) ③ The best out algorithm (OPT)
Platform: |
Size: 2048 |
Author: 高雯 |
Hits:
Description: 页面置换算法:用随机数生成页面请求次序，分配一定数量的物理快，用OPT、FIFO、LRU算法计算缺页次数和置换次数-Page replacement algorithm: the random number generator page request order to allocate a certain amount of physical fast, with OPT, FIFO, the LRU algorithm missing page number and the number of replacement
Platform: |
Size: 1024 |
Author: 钱君礼 |
Hits:
Description: 根据模拟的页式管理设计，掌握在页式存储管理中最基本的三种页面调度算法FIFO、LRU以及OPT。但在三种算法中均要求在调度程序中产生的页面序列是随机产生的，而不是人为的输入，在执行时只需改变页面的大小及内存容量就可以得到不同的页面序列，另外还需要说明随机的性能和其性能可能对算法的影响，并对随机性要有一定的参数控制能力。此外，计算并输出FIFO、LRU以及OPT算法在不同内存容量下的命中率。-According to the simulation page management design, master page storage management in the most basic of the three pages scheduling algorithm FIFO, LRU and OPT. But in three algorithms are required in the scheduler pages generated sequences are randomly generated, rather than artificial inputs, when executed simply by changing the page size and the amount of memory you can get a different page sequence also need described random performance and its performance may be on the algorithm, and to have a certain randomness parameter control capabilities. In addition, calculate and output FIFO, LRU and OPT algorithms under different memory hit rate.
Platform: |
Size: 54272 |
Author: jasonzjx |
Hits:
Description: 用c语言实现的页面置换算法，具体包括最佳替换算法，随机替换算法，FIFO算法，LRU算法和Clock算法。引用串的生成是尽量模拟真实的程序局部性而设计的。-a C program implements page replacement algorithm:include optimal algorithm, random algorithm, FIFO algorithm, LRU algorithm and Clock algorithm. The generation of reference string is based on the spatial locality of program.
Platform: |
Size: 337920 |
Author: 廖宇豪 |
Hits:
Description: 操作系统：
页面置换模拟程序设计
2，实现的功能：实现了页面置换模拟程序设计中的FIFO算法。
3，说明：由于产生页面的访问序列非常耗时，所以此程序产生的页面访问序列是使用产生0--319个数，然后打乱，形成类似的随机指令和页面访问序列。
4，BUG：由于其他的（诸如OPT,LRU,LFU）的算法只是页面的置换方式不同，故只写出了FIFO算法，其他的类似。
-Operating System: page replacement simulation program design 2, functions: to achieve a page replacement simulation program design FIFO algorithm. 3 Note: Due to generate page access sequence is very time-consuming, so the page access sequence is generated using this procedure produces a 0- 319 number, and then disrupted the formation of a similar sequence of random instructions and page views. 4, BUG: Because the other (such as OPT, LRU, LFU) algorithm is just a different way of replacement pages, so only write FIFO algorithm, the other is similar.
Platform: |
Size: 300032 |
Author: 天蓝 |
Hits:
Description: 随机给出一个页面执行序列，如：1,5,3,4,2,1,3,4,5,7,9,……。要求计算以下几种置换算法的缺页数、缺页率和命中率。
最佳置换算法OPT（Optimal）
先进先出算法FIFO（First In First Out）
最近最少使用算法LRU（Least Recently Used）-Random page gives an execution sequence, such as: 1,5,3,4,2,1,3,4,5,7,9, ....... Require replacement algorithm for computing several missing pages, missing pages rate and hit rate.
optimal replacement algorithm OPT (Optimal)
FIFO algorithm FIFO (First In First Out)
least recently used algorithm LRU (Least Recently Used)
Platform: |
Size: 3072 |
Author: 谢韵垚 |
Hits:
Description: 模拟操作系统采用OPT、FIFO和LRU算法进行页面置换的过程。
设程序中地址范围为0到32767，采用随机数生成256个指令地址，满足50 的地址是顺序执行，25 向前跳，25 向后跳。为满足上述条件，可采取下列方法：
设d0 10000，第 n个指令地址为dn，第 n+1 个指令地址为dn+1 ，n的取值范围为0 到255。每次生成一个 1 到1024范围内的随机数a，如果a落在1 到512 范围内，则dn+1 dn+1。如果a落在513 到768范围内，则设置dn+1 为1 到dn范围内一个随机数。如果a落在769 到1024范围内，则设置dn+1 为dn到32767范围内一个随机数。
页面大小的取值范围为1K，2K，4K，8K，16K 。按照页面大小将指令地址转化为页号。对于相邻相同的页号，合并为一个。
分配给程序的内存块数取值范围为1 块，2 块，直到程序的页面数。
6、 分别采用OPT、FIFO 和LRU算法对页号序列进行调度，计算出对应的缺页中断率。
打印出页面大小、分配给程序的内存块数、算法名、对应的缺页中断率。
操作系统页面置换算法通过c++实现
-Simulation operating system uses OPT, FIFO and LRU page replacement algorithm process. Let the program addresses the range of 0 to 32767, using a random number generator 256 instruction address, the address is to meet 50 of the order, a 25 jump forward, jump back 25 . To meet the above conditions, you can take the following methods: Let d0 10000, n-th instruction address is dn, the first n+1 instruction address dn+1, n the range of 0-255. 1-1024 each generate a random number within a range, if a falls within the range of 1-512, the dn+1 dn+1. If a falls within the range of 513-768, set dn+1 within the range of 1 to dn a random number. If a falls within the range of 769-1024, is set to dn dn+1 to a random number within the range of 32767. Page size in the range of 1K, 2K, 4K, 8K, 16K. Follow the page size of the instruction address into the page number. For the same adjacent page numbers, into one. Memory blocks allocated to the program in the range of 1, 2, until the page number
Platform: |
Size: 2643968 |
Author: 黄keke |
Hits: