Operating System Tutorial

Operating System Tutorial Types of Operating System Evolution of Operating System Functions of Operating System Operating System Properties Operating System Services Components of Operating System Needs of the Operating System

Operating Systems

Linux Operating System Unix Operating System Ubuntu Operating System Chrome Operating Systems Fedora Operating System MAC Operating System MS Windows Operating System Solaris Operating System Cooperative Operating System CorelDRAW Operating System CentOS FreeBSD Operating Systems Batch Operating System MS-DOS Operating System Commercial Mobile Operating Systems


Difference Between Multi-programming and Multitasking Difference between C-LOOK and C-SCAN Difference between Rotational Latency and Disk Assess Time Trap vs Interrupt Difference between C-SCAN and SSTF Difference between SCAN and FCFS Difference between Seek Time and Disk Access Time Difference between SSTF and LOOK Difference between Process and Program in the Operating System Difference between Protection and Security in Operating System

How To

How to implement Monitors using Semaphores How to Install a Different Operating System on a PC


What is Kernel and Types of Kernel What is DOS Operating System What is Thread and Types of Thread What is Process Scheduler and Process Queue What is Context Switching What is CPU Scheduling What is Producer-Consumer Problem What is Semaphore in Operating System Monitors in Operating System What is Deadlock What is Paging and Segmentation What is Demand Paging What is Virtual Memory What is a Long term Scheduler What is Page Replacement in Operating System What is BSR Mode What is Convoy Effect What is Job Sequencing in Operating System Why is it critical for the Scheduler to distinguish between I/O-bound and CPU-bound programs Why is there a Need for an Operating System


Process Management Process State Scheduling Algorithm FCFS (First-come-First-Serve) Scheduling SJF (Shortest Job First) Scheduling Round-Robin CPU Scheduling Priority Based Scheduling HRRN (Highest Response Ratio Next) Scheduling Process Synchronization Lock Variable Mechanism TSL Mechanism Turn Variable Mechanism Interested Variable Mechanism Deadlock Avoidance Strategies for Handling Deadlock Deadlock Prevention Deadlock Detection and Recovery Resource Allocation Graph Banker’s Algorithm in Operating System Fixed Partitioning and Dynamic Partitioning Partitioning Algorithms Disk Scheduling Algorithms FCFS and SSTF Disk Scheduling Algorithm SCAN and C-SCAN Disk Scheduling Algorithm Look and C-Look Disk Scheduling Algorithm File in Operating System File Access Methods in Operating System File Allocation Method Directory Structure in Operating System N-Step-SCAN Disk Scheduling Feedback Queue in Operating System Contiguous Memory Allocation in Operating System Real-time Operating System Starvation in Operating System Thrashing in Operating System 5 Goals of Operating System Advantages of Operating System Advantages of UNIX Operating System Bit Vector in Operating System Booting Process in Operating System Can a Computer Run Without the Operating System Dining Philosophers Problem in Operating System Free Space Management in Operating System Inter Process Communication in Operating System Swapping in Operating System Memory Management in Operating System Multiprogramming Operating System Multitasking Operating Systems Multi-user Operating Systems Non-Contiguous Memory Allocation in Operating System Page Table in Operating System Process Scheduling in Operating System Segmentation in Operating System Simple Structure in Operating System Single-User Operating System Two Phase Locking Protocol Advantages and Disadvantages of Operating System Arithmetic operations in binary number system Assemblers in the operating system Bakery Algorithm in Operating System Benefits of Ubuntu Operating System CPU Scheduling Criteria in Operating System Critical Section in Operating System Device Management in Operating System Linux Scheduler in Operating System Long Term Scheduler in Operating System Mutex in Operating System Operating System Failure Peterson's Solution in Operating System Privileged and Non-Privileged Instructions in Operating System Swapping in Operating System Types of Operating System Zombie and Orphan Process in Operating System 62-bit operating system Advantages and Disadvantages of Batch Operating System Boot Block and Bad Block in Operating System Contiguous and Non - Contiguous Memory Allocation in Operating System Control and Distribution Systems in Operations Management Control Program in Operating System Convergent Technologies in Operating System Convoy Effect in Operating System Copy Operating Systems to SSD Core Components of Operating System Core of UNIX Operating System Correct Value to return to the Operating System Corrupted Operating System Cos is Smart Card Operating System Cosmos Operating Systems Examples Generation of Operating System Hardware Solution in Operating System Process Control Block in Operating System Function of Kernel in Operating System Operating System Layers History of Debian Operating Systems Branches and Architecture of Debian Operating Systems Features and Packages of Debian Operating Systems Installation of Operating System on a New PC Organizational Structure and Development in Debian Operating Systems User Interface in Operating System Types Of Memory in OS Operating System in Nokia Multilevel Paging in OS Memory Mapping Techniques in OS Memory Layout of a Process in Operating System Hardware Protection in Operating System Functions of File Management in Operating System Core of Linux Operating System Cache Replacement Policy in Operating System Cache Line and Cache Size in Operating System What is Memory Mapping? Difference Between Network Operating System And Distributed Operating System What is the difference between a Hard link and a Soft Link? Principles of Preemptive Scheduling Process Scheduling Algorithms What is NOS? What is the Interrupt I/O Process? What is Time Sharing OS What is process termination? What is Time-Sharing Operating System What is Batch File File system manipulation What is Message-passing Technique in OS Logical Clock in Distributed System

Multiprogramming Operating System

You will discover more about the multiprogramming operating system in this post, including how it functions and its benefits and drawbacks.

Each process needs several types of system time, including CPU time and IO time. A form of batch processing called multiprogramming keeps the CPU active at all times. Multiprogramming hence aids in enhancing the effectiveness of the system.

Multiprogramming Operating System: What Is It?

  • As software runs, it is referred to as a "Process," "Job," and "Task."
  • A multiprogramming OS may execute many applications on a machine with a single CPU. As a result, many tasks might need to share CPU time. They are expected to finish their work at different times, though.
  • Concurrent program executions improve throughput using fewer system resources than serial or batch processing systems.
  • The resource management procedures are connected to the fundamental operations of the operating system.
  • The main memory contains several tasks, programs, or jobs simultaneously.
  • A single user cannot always keep the CPU or I/O active, so buffering and spooling have some restrictions. They can overlap I/O and CPU jobs to enhance system performance.
  • Multiprogramming strategies are used to improve resource consumption.
  • When a job is working with I/O and does not require CPU, the OS may choose to start that job's execution. When the CPU is idle, the OS may switch to another job in memory, and the CPU will run that task partially until the job requests I/O, and so on.
  • There are two programs in the main memory, P1 and P2. The OS selects an application and begins running it.
  • If an I/O action is needed while the P1 program is running, the OS will automatically switch to the P2 application. If the p2 program needs I/O, it switches to P3 once more, and so on.
  • After P3, the CPU will return control to the first one if any other programs are still running.

Multiprogramming Operating System Types

Two primary categories of multiprogramming operating systems exist. These are listed below:

  1. Multitasking Operating System
  2. Multiuser Operating System

Multitasking operating system

The simultaneous execution of two or more programs is made possible by a multitasking operating system. A program switched out of memory is momentarily stored on the disc until it is needed.

Multiuser operating system

The CPU may distribute time to other apps while it is idle while a program is conducting I/O activities.

Multiple jobs might be running on the processor at once, even though not all tasks are completed at once.

Multiprogramming Operating System's operation

The multiprogramming system allows several users to complete their tasks simultaneously and save them in the main memory. The CPU may allot time to different applications while idle when one program performs I/O tasks.

Numerous applications may share CPU time when awaiting an I/O transfer while another is constantly available to use the processor. There may be many tasks operating on the processor at once, as well as portions of other processes being processed first, then another segment, etc. As a result, a computer with a single processor may execute many programs, and the CPU is never idle. All jobs are not executed simultaneously. Therefore, a multiprogramming system's main objective is to keep the CPU active until some jobs become available in the job pool.

  • The CPU may distribute time to other apps while it is idle while a program is conducting I/O activities.
  • Multiple jobs might be running on the processor at once, even though not all tasks are completed at once.

Multiprogramming Operating System Examples

Examples of multiprogramming operating systems include those that let you transfer data, download programs, and use MS Excel, Google Chrome, and Firefox browsers, among many more apps. Windows O/S, UNIX O/S, and microcomputers like XENIX, MP/M, and ESQview are more examples.

Multiprogramming Operating System Benefits and Drawbacks

The multiprogramming operating system has both advantages and drawbacks. The following are a few benefits and drawbacks:


The multiprogramming operating system has several benefits. Here are a few of the benefits:

  • It offers a slower response time.
  • Running several tasks concurrently in one application could be useful.
  • It aids in improving the computer's overall task throughput.
  • The multiprogramming system can be used by several people simultaneously.
  • Short-term projects are completed more swiftly than long-term ones.
  • It could aid in reducing turnaround times for quick activities.
  • It never goes idle and improves CPU utilization.
  • The resources are wisely used.
  • The CPU never enters an idle state, which results in excessive CPU consumption.
  • Memory use is effective.
  • The CPU supports several interactive user terminals and has a high throughput.


The operating system for many programming languages has several drawbacks. The following are a few drawbacks:

  • It is extremely sophisticated and complex.
  • Scheduling of the CPU is necessary.
  • Because all kinds of tasks are kept in the main memory, the operating system needs memory management.
  • Managing all procedures and tasks is the most difficult assignment.
  • If many jobs are available, there will be a long wait for long-term positions.
  • CPU scheduling is necessary since several tasks are prepared to perform simultaneously on the CPU.