If the processes of a batch need some I/O operation, at that time CPU must wait till the I/O operation gets completed. CPU may remain idle for a long time in the batch system.A lot of time was being wasted earlier for each individual process in context switching from one environment to another environment but batch processing saves this time also.This makes management easy for large work in batch systems.The idle time for the batch system is very less and multiple users can share the batch systems.A new job gets started as soon as the previous job is finished without any manual intervention this increases the performance of the system.It is very difficult to know the time needed by any job for completion of its execution but the processors of the batch systems know how long the job would be when it is in the queue.It automatically sequenced from one job to another job. To overcome this idle time, a small program called resident monitor was created which is always resident in the memory.During this transaction from one job to the next, the CPU sat idle. Batching similar jobs helps in the utilization of system resources quite a bit.Jobs in a batch are processed in the order of submission.If he runs two 'C' as a batch, however, he could set up only once for 'C'. If these programs can be run in that order, he would have to set up for the 'C' program environment (loading the 'C' compiler tapes) then set up the COBOL program and finally 'C' program again. The operator collects the jobs from different users and jobs with similar requirements were batched together and run through the computer as a group.įor example, suppose the operator received one 'C' Program one COBOL program and another 'C' program. In the batch system, firstly user prepares his job by using punch cards and then, he submits the job to the computer operator.

When we are working with tapes a large amount of CPU time wasted in mounting tapes or when the user was operating the input/output device then also a large amount of CPU time wasted CPU was sitting without any work to perform. When we are working in an environment there is a restriction of making use of computer resources effectively and improvement in the programmer's output. Submitted by Monika Jha, on November 22, 2019 In this tutorial, we are going to study about the Batch Processing Operating System, its advantages and disadvantages.

Serial processing operating system