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CyC2018
2020-11-18 03:00:45 +08:00
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notes/计算机操作系统 - 设备管理.md
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@ -32,7 +32,7 @@
### 1. 先来先服务
\> FCFS, First Come First Served
> FCFS, First Come First Served
按照磁盘请求的顺序进行调度。
@ -40,7 +40,7 @@
### 2. 最短寻道时间优先
\> SSTF, Shortest Seek Time First
> SSTF, Shortest Seek Time First
优先调度与当前磁头所在磁道距离最近的磁道。
@ -50,7 +50,7 @@
### 3. 电梯算法
\> SCAN
> SCAN
电梯总是保持一个方向运行，直到该方向没有请求为止，然后改变运行方向。