Skip to main content

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 dividing the memoryinto two areas one portion or partition is occupied by resident monitor and the other portionis dynamically used to load the transist program for execution.

 

3.       I/O management .since only one program is executed at a time, there is no contention for I/O devices. Thus the allocation and deallocation for the I/O devices is trivial.

 

4.       File managment access to the files is done on serial basis.  


 

                                                                                                 
 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

          Real time system             







Advantages and 

disadvantages of batch 

processing system


Advantages of batch processing

·         Batch processing is particularly is useful for operation that require the computer or a peripheral devices for an extended period of timeee with very little user interaction

·         Increased performance as it was possible for job to start as soon as previous job is finished without any manual intervention.

·         Priorities can be set for different batches.

 

Disadvantages of batch 

processing

·         No interaction is the possible with the user while the program is being executed. User have no control over intermediate result of a program.

·         It reduces timeliness in some cases. The time required to accumulate datainto batches, in some cases, destroy much of the value of the data.

 

 

 


 

                                             diagram of batch processing system

       

·         The batch processing operating system has high turnaround time. Turnaround timeis the time taken between the submitting the job and getting the output which includes the batch formation and its execution.

·         In batch processing, it is difficult to provide the desired priority scheduling

·         For example, if two high priority jobs were to be run but were in separate batches, one wouold have to wait until the other batch was completely processed

                                                   

                                           memory layout for resident monitor.  

Comments

Post a Comment

Popular posts from this blog

Defination of OS(operating system) and its concepts

    What do you mean by operating system?     Definition :  An operating system is a program that act as an interface between the user of a computer and the                                      Computer hardware. Operating system is a first program that gets loaded into the memory through a process called booting. Concepts of operating system : ·                       The purpose of operating system is to provide an environment in which a user can execute program in a convenient and efficient manner. ·                       Operating system is an integrated set of program that ma...
3 comments
Read more

Multi Level Queue Scheduling (MLQ)

  Multi Level Queue Scheduling (MLQ) ·          Multilevel queue scheduling classifies the processes according to their types for example, a multilevel queue scheduling algorithm makes a common. ·          In this scheduling ready queue is divided into various queue that are called sub queues. A subqueue is a distinct operational queue ·          The process are permanently assigned to subqueues, generally based on some property of the process such as memory size,priority or process type ·          Each subqueue has its process sucheduling algorithm. For example interactive process at the foreground may use round robin scheduling while batch jobs at the background may use the FCFS method ·          For example, consider a system with four different queues 1.   ...
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

Distributed system

  Distributed system ·           A distributed system is a collection of processor located in geographical dispersal physical location. ·           In this system, the workhold is distributed or divided between two or more computers that are linked together by communication network . that is the different processors communicate using communication links, such as telephone lines and buses3 ·           The various processors do not share memory, clock ,or peripheral devices instead each processors has its local memory. ·           The purpose of distributed system is to provide an efficient and convenient environment for sharing of resources. ·           Some example of distributed operating system are amoeba, angle, chorus, much, alpha kernel. ·   ...
Post a Comment
Read more

Micro kernel architecture

  Micro kernel  architecture What is Kernel? A kernel is an important part of an OS that manages system resources. It also acts as a bridge between the software and hardware of the computer. It is one of the first program which is loaded on start-up after the bootloader. The Kernel is also responsible for offering secure access to the machine's hardware for various programs. It also decides when and how long a certain application uses specific hardware. What is Microkernel? Microkernel  is a software or code which contains the required minimum amount of functions, data, and features to implement an operating system. It provides a minimal number of mechanisms, which is good enough to run the most basic functions of an operating system. It allows other parts of the operating system to be implemented as it does not impose a lot of policies. Microkernels and their user environments are usually implemented in the C++ or C programming languages with a little bit of assembly. Ho...
Post a Comment
Read more