进程算法页面的相关内容

文章 2022-11-01 来自：开发者社区

进程调度算法、页面置换算法、磁盘磁盘调用算法

调度算法调度的基本概念：在多道程序系统中中，进程的数量往往多于CPU的个数，因此进程竞争CPU的情况在所难免，调度是对CPU进程分配。调度的层次：一个作业从提交开始直到完成，往往要经历以下三级调度 1. 作业调度，又称高级调度，其主要任务是按一定的原则从外存上处于后背状态的作业中挑选一个作业，给它分配内存、输入/输出设备等必要资源，并建立相应的进程，使它获得竞争CPU的权利。 2. 中级调....

文章 2022-02-16 来自：开发者社区

Linux内核中几个比较有意思的解释(进程调度算法，页面调度算法，非线性工作集)

1.O(1)调度器的时间计算公式与CFS调度器 Linux 2.6.23之前普遍采用了O(1)调度器，它是一种基于优先级的时间片调度算法，所谓的O(1)只是它的一些精巧的数据结构使然，在不考虑动态补偿/惩罚的情况下，只要优先级确定，那么时间片就是固定的。2.6.23以后的CFS呢，它是一种基于权重的非时间片调度算法，进程每次执行的时间并不是固定的，而是根据进程数在一个准固定周期内按照其权重比....

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更新时间 2024-04-30 19:01:15

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