Why long term schedulers should select a good process mix of I O bound and CPU bound processes?

Why long term schedulers should select a good process mix of I O bound and CPU bound processes?

It is important that the long-term scheduler select a good process mix of I/O-bound and CPU-bound processes. Later, the process can be reintroduced into memory, and its execution can be continued where it left off. This scheme is called swapping.

Why it is important for a long term scheduler to select a good process mix?

The long-term scheduler controls the degree of multiprogramming. It must select a careful mixture of I/O bound and CPU bound processes to yield optimum system throughput.

Why is it important for the scheduler to distinguish between I O bound programs and CPU bound programs?

5.1 Why is it important for the scheduler to distinguish I/O-bound programs from CPU-bound programs? Answer: Consequently, one could make better use of the computer’s resources by giving higher priority to I/O-bound programs and allow them to execute ahead of the CPU-bound programs.

Which scheduler has to take a proper mix of IO bound processes and CPU bound processes?

Long term scheduler
Long term scheduler The purpose of long term scheduler is to choose a perfect mix of IO bound and CPU bound processes among the jobs present in the pool.

What is the function of a long term scheduler?

Long Term Scheduler A long-term scheduler determines which programs are admitted to the system for processing. It selects processes from the queue and loads them into memory for execution. Process loads into the memory for CPU scheduling.

What is the role of long term scheduler short term scheduler and medium term scheduler in OS?

Long term scheduler regulates the program and select process from the queue and loads them into memory for execution. The medium-term scheduler enables you to handle the swapped out-processes. The main goal of short term scheduler is to boost the system performance according to set criteria.

What is the purpose of long term scheduler?

Long-Term Scheduler is also known as Job Scheduler. Long-term scheduler regulates the programs which are selected to system for processing. In this the programs are setup in the queue and as per the requirement the best one job is selected and it takes the processes from job pool.

What is the function of the long term scheduler?

The duty of the long-term scheduler is to bring the process from the JOB pool to the Ready state for its execution. Long-Term Scheduler is also called Job Scheduler and is responsible for controlling the Degree of Multiprogramming i.e. the total number of processes that are present in the ready state.

How do you know if a process is IO bound or CPU bound?

The easiest way is to look at what processes are running and how much CPU is being used. A cruder way is to use your ears. If the fans are blowing hard then its CPU bound and working those processors hard. If your hard disk is noisy then its I/O bound.

What is the difference between an I O bound process and a CPU bound process?

CPU Bound means the rate at which process progresses is limited by the speed of the CPU. I/O Bound means the rate at which a process progresses is limited by the speed of the I/O subsystem. A task that processes data from disk, for example, counting the number of lines in a file is likely to be I/O bound.

What is the purpose of CPU scheduling?

CPU Scheduling is a process of determining which process will own CPU for execution while another process is on hold. The main task of CPU scheduling is to make sure that whenever the CPU remains idle, the OS at least select one of the processes available in the ready queue for execution.

What are the roles of long term mid term and short term scheduler?

What is the purpose of a long term scheduler?

The purpose of long term scheduler is to choose a perfect mix of IO bound and CPU bound processes among the jobs present in the pool. If the job scheduler chooses more IO bound processes then all of the jobs may reside in the blocked state all the time and the CPU will remain idle most of the time. This will reduce the degree of Multiprogramming.

Why is it important for a scheduler to distinguish between I/O bound processes?

So in the same way, it is important for a scheduler to distinguish between I/O bound and CPU bound processes to give an optimal usage of system resources. Scheduler uses this information to schedule a decent mix of both I/O bound and CPU bound processes.

What is the difference between short-term scheduler and CPU scheduler?

Note: Short-term scheduler only selects the process to schedule it doesn’t load the process on running. Here is when all the scheduling algorithms are used. The CPU scheduler is responsible for ensuring there is no starvation owing to high burst time processes.

What is the use of scheduler in operating system?

CPU Schedulers in OS help in scheduling the processes. Types of Schedulers in OS- Long Term Scheduler, Short Term Scheduler, Medium Term Scheduler. Dispatcher in OS assigns the process to the CPU for execution.