Skip to main content

OS its Resource Manager and its Function

 Operating system as resource manager: 

·         A computer system usually has many hardware and software resources such as processor , memory, disk printer, I/O devices etc.

·         The task of resources management becomes essential in multi-user operating system where different user compute for the same resource.

 

Operating system manages resources in two ways :

1.       Time multiplexing :it defines the sharing of resources on the basis of fixed time slices. For example, the operating system allocate the resources, such as CPUto program A for fixed time slice.

2.       Space timing: it defines the concurrent sharing of resources among different programs.for example, sharing of hard disk and main memory is space multiplexing.

  FUNCTION OF OPERATING SYSTEM  

The primary function of an operating system is to provide an environment for excecution of users program . the various function of operating system are:

1.       process management

2.       main memory management

3.       secondary storage management

4.       file management

5.       I/Omanagement

6.       Protection and security

7.       Networking

8.       Command interpretation

1.Process management:

·         The process management refers to assignment of processor to different task being performed by the computer system.

·         The operating system responsible for the following activities in connection with process management :

1.       Creating and deleting both user and system processes.

2.       Suspending and resuming processes.

3.       Providing mechanisms for process synchronization such as semphores.

4.       Providing mechanism for process communication

5.       Providing mechanism for deadlock handling. Deadlock is a condition in which the number of processes wait infinity for some shared resource.

Labels:

Comments

  1. Easytolearn6 November 2020 at 14:57

    Thanku for such a post

    ReplyDelete
  2. Hicentrik16 August 2021 at 00:21

    Thank you for sharing this blog. With companies hiring employees across branches, cities, and even countries – it's no longer possible to manage resources manually. Businesses have to look beyond spreadsheets for resource allocation. To manage the project in good manner, we need a resource manager software.

    ReplyDelete

Post a Comment

Popular posts from this blog

Exokernel architecture

Exokernel architecture Most of us know what kernels are and how do they work to make programmers’ lives easier. But, how many of us know what exokernels are? I hope you will be able to get a brief introduction on this terminology through this blog. Let’s start with a brief introduction on kernel. What is a kernel? A kernel is the foundational layer of an operating system that functions at a basic level, communicating with hardware and managing resources, such as CPU and the memory. It works as an interface between the user application and the hardware. There   are two main types of kernel 1. Micro kernel 2. Monolithic Kernel 1.  Monolithic architecture 2.      Layerd archtecture . 3.       Virtual machine architecture 4.       Exokernel architecture 5.      Client server architecture   6.       Micro kernel architecture Now let’s head into our main focus. What is an Exokern...
Post a Comment
Read more

Monolithic Architecture

  Monolithic Architecture Monolith means composed all in one piece. The  Monolithic  application describes a single-tiered  software  application in which different components combined into a single program from a single platform. Components can be: Authorization — responsible for authorizing a user Presentation — responsible for handling HTTP requests and responding with either HTML or JSON/XML (for web services APIs). Business logic — the application’s business logic. Database layer — data access objects responsible for accessing the database. Application integration — integration with other services (e.g. via messaging or REST API). Or integration with any other Data sources. Notification module — responsible for sending email notifications whenever needed. Example for Monolithic Approach Consider an example of Ecommerce application, that authorizes customer, takes an order, check products inventory, authorize payment and ships ordered products. This applicat...
Post a Comment
Read more

Batch Processing Operating System

  Batch processing system ·           Batch processing is one of the oldest method    of running the programs ·           The computer in the past were very large in size and their I/O devices were very different from those that are used today. The job processing was not interactive as it is today. ·           The user did not interact directly with computer system.   ·           The process scheduling , memory management, file management and I/Omanagement functions are quite simple in batch processing system   1.         Process scheduling (i.e. allocation strategy for a processor is typically in order of their arrival i.e. first come first served(FCFS)basis.   2.         Memory management  is done by divi...
Post a Comment
Read more

Classification of Operating System

  Classification of operating systems The operating systems may be classified into different types depending upon the nature of interaction between the user and his/her program. The various types of operating system are : 1.       single user operating system    2.        Multi user operating system   3.         Batch processing operating system 4.        Multi programming operating system   5.       Multi tasking operating system   6.         Multiprocessing operating system 7.         Time sharing operating system 8.       Real time system      Distributed system Multi threading operating system       Single user operating system ·          ...
Post a Comment
Read more

Time Sharing System and its Requirements

  Time sharing  system ·           Time sharing refers to the allocation of computer resources in a time dependent fashion to several program simultaneously ·           A time sharing system has many user terminals that are connected to same computer simultaneously. Using these terminal, different users can work on a system at the same time ·           Thus, it uses multi programming with a special CPU scheduling among all the last one, and then again beginning from the first one ·           In time sharing system, the CPU time is divided among all the users on schedule basis. ·           It release the CPU under any of the following three conditions: 1.         When the allotted time slice expires. 2.    ...
Post a Comment
Read more