Operating Systems Laboratory Notes
Subject Overview
The practical companion to Operating Systems, implementing CPU scheduling algorithms (FCFS, SJF, Round Robin), the Banker's algorithm for deadlock avoidance, the Producer-Consumer problem with semaphores, IPC via pipes and FIFOs, memory management techniques (paging, segmentation, best-fit, first-fit, MVT), the Dining Philosophers problem, and page replacement (FIFO) and file allocation. A 1-credit core lab paper.
Subject at a glance
1
Units
10
Topics
1
Credits
1
Infographics
Unit-wise Syllabus
1 units — open any unit for detailed topic-wise notes, diagrams and important exam questions
- FCFS/SJF/Round Robin CPU scheduling simulation
- Banker's algorithm for deadlock avoidance
- Producer-Consumer problem using semaphores
- IPC via pipes and FIFOs
- paging and segmentation memory management simulation
- best-fit and first-fit contiguous memory allocation
- Dining Philosophers problem
- MVT algorithm
- FIFO page replacement
- sequential file allocation
Rule
First come, first served
Each process gets a fixed time quantum
Preemptive
No
Yes
Strength
Simple to implement
Fair and responsive
Weakness
Long jobs delay short ones (convoy effect)
Too small a quantum adds switching overhead
Study guide
In the OS lab you simulate how an operating system works: FCFS, SJF and Round Robin scheduling, the Banker's algorithm, the Producer-Consumer problem using semaphores, inter-process communication using pipes and FIFOs, paging and segmentation, best-fit and first-fit allocation, the Dining Philosophers problem, the MVT algorithm, FIFO page replacement and sequential file allocation. Understand what each simulation demonstrates; examiners often ask why an algorithm behaves as it does.
Why Operating Systems Laboratory Matters
Simulating scheduling, synchronisation and memory management makes abstract theory concrete, and shows how concurrency problems such as producer-consumer and dining philosophers are actually solved.
How to Prepare for Operating Systems Laboratory
- Run each simulation with different inputs and compare the results.
- Be ready to explain the algorithm in simple words in the viva.
- Keep outputs printed and attached in your record file.
Operating Systems Laboratory: Frequently Asked Questions
What experiments are in the Operating Systems lab?
Scheduling simulations, Banker's algorithm, producer-consumer with semaphores, pipes and FIFOs, paging, memory allocation, dining philosophers and page replacement.