首页 Java 模拟操作系统页面替换算法

Java 模拟操作系统页面替换算法

上传者： AndrewDong_2008 | 上传时间： 2021-07-10 14:52:22 | 文件大小： 449KB | 文件类型： RAR
Java图形化界面实现以下要求，我上传给大家一同分享。 通过随机数产生一个指令序列，共 320 条指令，指令的地址按下述原则生成： （1）：在[0，319]的指令地址之间随机选取一起点 m。 （2）：顺序执行一条指令，即执行地址为 m+1 的指令 。 （3）：在前地址[0,m+1]中随机选取一条指令并执行，该指令的地址为 m' 。 （4）：顺序执行一条指令，其地址为 m'+1。 （5）：在后地址[m'+2，319]中随机选取一条指令并执行。 （6）：重复步骤 （1）—（6），直到生成 320 条指令。 2、将指令序列转换为页地址流，比如：页面大小为 1K，用户内存容量 4 页到 32 页，用户虚存容量为 32K；在用户虚存中，按每 K存放 10 条指令排列虚存地址。即 320 条指令在虚存中的存放方式为： 第 0 条-第 9 条指令为第 0 页（对应虚存地址为[0，9]）。 第 10 条-第 19 条指令为第 1 页（对应虚存地址为[10，19]） 。 ……………………………… 第 310 条-第 319 条指令为第 31页（对应虚存地址为[310，319]）。 按以上方式，用户指令可组成 32页。 3、页面大小的取值范围分别为 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。 4、分配给程序的内存块数取值范围为 1 块、2块，一直到程序的页面数。 5、分别采用 FIFO 和 LRU 算法对页号序列进行调度，并计算出对应的缺页中断率。

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评论信息

  • lgl8982335 :
    很好，如果再加上LFU、OPT算法就好了
    2012-11-18

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