Скачать или смотреть (Part-1.17) Long, Short and Medium Term Scheduler - Part3 | OS বাংলা টিউটোরিয়াল

Welcome to our in-depth video on the Long, Short, and Medium Term Scheduler in operating systems! 🚀

In this video, we'll explore:

Long Term Scheduler: Understanding its role in job scheduling and how it determines which jobs are admitted into the system.
Short Term Scheduler: Delving into its crucial function in CPU scheduling and how it selects which process to execute next.
Medium Term Scheduler: Discovering its part in swapping processes in and out of memory to ensure optimal performance.
We'll break down each type of scheduler, discuss their differences, and highlight their importance in maintaining system efficiency and performance.

🔍 Topics Covered:

Introduction to Process Scheduling
Detailed Explanation of Long Term Scheduler
Detailed Explanation of Short Term Scheduler
Detailed Explanation of Medium Term Scheduler
Comparative Analysis
Real-World Examples
Q&A Session
Whether you're a computer science student, an aspiring software engineer, or just curious about how operating systems work, this video will provide you with a clear and concise understanding of these essential components.

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Effect on performance
• The long term scheduler is responsible for creating a balance between the I/O bound(a process is said to be I/O bound if the majority of the time is spent on the I/O operation) and CPU bound(a process is said to be CPU bound if the majority of the time is spent on the CPU). So, if we create processes which are all I/O bound then the CPU might not be used and it will remain idle for most of the time. This is because the majority of the time will be spent on the I/O operation.
• So, if we create processes that are having high a CPU bound or a perfect balance between the I/O and CPU bound, then the overall performance of the system will be increased.
#ShortTermScheduler
Short-term schedulers are those schedulers whose decision will have a short-term effect on the performance of the system. The duty of the short-term scheduler is to schedule the process from the ready state to the running state. This is the place where all the scheduling algorithms are used i.e. it can be FCFS or Round-Robin or SJF or any other scheduling algorithm.
Short-Term Scheduler is also known as CPU scheduler and is responsible for selecting one process from the ready state for scheduling it on the running state.
Effect on performance
• The choice of the short-term scheduler is very important for the performance of the system. If the short-term scheduler only selects a process that is having very high burst time then the other process may go into the condition of starvation.So, be specific when you are choosing short-term scheduler because the performance of the system is our highest priority.
#MediumTermSchedulers
Sometimes, you need to send the running process to the ready state or to the wait/block state. For example, in the round-robin process, after a fixed time quantum, the process is again sent to the ready state from the running state. So, these things are done with the help of Medium-Term schedulers.
Medium-term schedulers are those schedulers whose decision will have a mid-term effect on the performance of the system. It is responsible for swapping of a process from the Main Memory to Secondary Memory and vice-versa.
It is helpful in maintaining a perfect balance between the I/O bound and the CPU bound. It reduces the degree of multiprogramming.




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