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Os Report04 - unicornt的博客
https://blog.unicornt.cn/2021/01/14/OS-Report04.html
Report04-18307130104-赵文轩[toc]文章内容 作者认为,并发理论需求一个全新的概念框架,而不是仅仅在现有框架上的革新。 考虑一列相继运行的程序,假设没有任何的即刻输出,可以被表示成一个读入内存输出内存的函数,程序的含义可以被定义为内存->内存。而并发运行强制引入了不确定性的概念。对...
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Os Report02 - unicornt的博客
https://blog.unicornt.cn/2021/01/14/OS-Report02.html
Report02 18307130104 赵文轩[toc] Inside the Linux 2.6 Completely Fair Scheduler 阅读报告概述 CFS 全称 Completely Fair Scheduler,也就是完全公平调度器。CFS 是 Linux 内核的一部分,负责对进程的调度...
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Welcome - unicornt的博客
https://blog.unicornt.cn/2018/07/01/welcome.html
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Os Report06 - unicornt的博客
https://blog.unicornt.cn/2021/01/14/OS-Report06.html
Report06-18307130104-赵文轩 新文件系统的目标是通过更加多变的分配原则来获得更好的访问局部性以提升磁盘的吞吐率,并适配更多的外围设备和处理器特征。旧文件系统 文件系统中每个磁盘被分成一个或多个分区,每个都包含一个文件系统,一个文件系统不会跨越多个分区。文件系统被它的 superblock ...
Os Report05 - unicornt的博客
https://blog.unicornt.cn/2021/01/14/OS-Report05.html
Report05 18307130104 赵文轩[toc]“免费午餐”的消失和事务性内存的出现 事务性内存(Transactional Memory, 以下简称TM)试图以不(让编程者)加锁的方式解决并发问题。TM 的基本思路就是将程序视作读取和修改内存的事物,直接并发运行,利用冲突检测机制对可能发生的错误进行...
Os Report03 - unicornt的博客
https://blog.unicornt.cn/2021/01/14/OS-Report03.html
Report03 18307130104 赵文轩[toc]页面着色原理 页面着色的出现,是为了解决虚拟内存中相邻的页表,因为在物理地址上不相邻,(可能)导致出现 cache 出现大量缺页,从而造成抖动。 cache 的设计采用中间一段地址作为 Set 的寻址。采用 Set 作为索引不仅保证了相邻的物理内存可以...
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