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模拟虚拟存储器 调用页面时若没有实页就中断 请求页面置换 算法是FIFO-Simulation of virtual memory called pages if there is no real interrupt request page on the page replacement algorithm is FIFO
Date : 2025-12-16 Size : 1kb User : 天蓝

1.实现一个内存管理的伙伴算法,实现内存块申请时的分配和释放后的回收。 实验准备    用随机函数仿真进程进行内存申请,并且以较为随机的次序进行释放。对其碎片进行统计,当申请分配内存失败时区分实际空间不足和由于碎片而不能满足。 2.设计一个虚拟存储区和内存工作区,并使用下述算法计算访问命中率。    1) 最佳置换算法(Optimal)    2) 先进先出法(Fisrt In First Out)    3) 最近最久未使用(Least Recently Used)    4) 最不经常使用法(Least Frequently Used)    5) 最近未使用法(No Used Recently)    其中,命中率=1-页面失效次数/页地址流长度。     试对上述算法的性能加以较各:页面个数和命中率间的关系;同样情况下的命中率比较。-1. A partner of the memory management algorithm to achieve a recovery after the application of the memory block allocation and release. Experimental preparation random function simulation process memory application, and released in a more random order. Statistics, when applications allocate memory failed to distinguish between the actual lack of space and because of the debris and can not meet its debris. Design a virtual memory storage area and workspace, access to the hit rate and use the following algorithm. 1) The best replacement algorithm (Optimal) 2) first-in, first-out method (Fisrt In First Out), 3) Recently the most-recently-used (Least Recently Used) 4) is not the most frequently used method (Least Frequently Used) 5) unused method recently (No Used Recently) which hit rate = 1- the number of page faults/page address stream length. The test of the performance of the above algorithm to be compared to the relationship between: page number and hit rate compare the hit rate in
Date : 2025-12-16 Size : 133kb User : kk

操作系统的存储管理模块中关于页面置换的四种置换算法-Four replacement algorithms for page replacement in the storage management module of the operating system
Date : 2025-12-16 Size : 2kb User : Susan
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