短期和中期调度程序之间的区别

先决条件 – 进程调度程序

1. 短期调度程序：
短期调度程序也称为 CPU 调度程序。它的主要目标是根据某些设定的标准提高系统性能。短期调度程序有助于选择准备执行的进程组并将 CPU 分配给每个进程。与中期调度程序不同，它执行更频繁，即在几秒钟内执行。短期调度程序对 DOM(多编程程度)的控制较少。

2. 中期调度员：
中期调度器也称为交换调度器。它的主要目标是从主内存中换出挂起的进程。如果正在运行的进程发出 I/O 请求，它就会被挂起。挂起的进程不会显示任何完成进度，因此应将其移至二级存储，从而为新进程提供空间。与短期调度程序不同，它的执行不是很频繁。中期调度器减少了DOM(多道程序设计的程度)。

短期和中期调度程序之间的区别：

S.No.	SHORT-TERM SCHEDULER	MIDDLE-TERM SCHEDULER
1.	Short-Term scheduler is also known as CPU Scheduler.	Middle-Term scheduler is also known as Swapping Scheduler.
2.	Speed of Short-Term scheduler is very fast as compared to middle-Term scheduler.	Its speed is less than Short-Term scheduler.
3.	It provides less control over Degree of programming.	It reduces the Degree of Programming.
4.	Its presence in Time sharing system is very minimal.	Middle-term scheduler is a part of Time sharing system.
5.	In short-term scheduler, there occurs transition of process from ready to executing state.	In middle-term scheduler, no process transition state occurs.
6.	Its function is to selects those processes which are ready to execute.	Its function is to reintroduce process back in the memory.