What are the factors to be considered when selecting a scheduling algorithm?

Various Criteria to select best CPU Scheduling Algorithm

• Arrival Time. Arrival time is defined as the point of time at which a process enters into the ready state and ready for its execution.
• Burst Time.
• CPU Utilization.
• Throughput.
• Turnaround Time.
• Waiting Time.
• Response Time.

What factors are considered when scheduling a job using job control language?

Some parameters that may be considered are as follows:

• Job priority.
• Availability of computing resource.
• License key if the job is utilizing a licensed software.
• Execution time assigned to the user.
• Number of parallel jobs permitted for a user.
• Projected execution time.
• Elapsed execution time.
• Presence of peripheral devices.

What is process scheduling in operating system?

Definition. The process scheduling is the activity of the process manager that handles the removal of the running process from the CPU and the selection of another process on the basis of a particular strategy. Process scheduling is an essential part of a Multiprogramming operating systems.

What are the different job scheduling in operating systems?

Six types of process scheduling algorithms are: First Come First Serve (FCFS), 2) Shortest-Job-First (SJF) Scheduling, 3) Shortest Remaining Time, 4) Priority Scheduling, 5) Round Robin Scheduling, 6) Multilevel Queue Scheduling.

What are the system components of operating system?

Components of Operating System

• Process Management.
• File Management.
• Network Management.
• Main Memory Management.
• Secondary Storage Management.
• I/O Device Management.
• Security Management.
• Command Interpreter System.

What is Job Control Language in operating system?

Job Control Language (JCL) is a name for scripting languages used on IBM mainframe operating systems to instruct the system on how to run a batch job or start a subsystem.

What is job queue in operating system?

A job queue contains an ordered list of jobs waiting to be processed by a subsystem. The job queue is the first place that a submitted batch job goes before becoming active in a subsystem. The job is held here until a number of factors are met.

What are the four main components of an operating system?

The main components of an OS mainly include kernel, API or application program interface, user interface & file system, hardware devices and device drivers.

What is job scheduling in operating system?

What Does Job Scheduling Mean? Job scheduling is the process of allocating system resources to many different tasks by an operating system (OS). The system handles prioritized job queues that are awaiting CPU time and it should determine which job to be taken from which queue and the amount of time to be allocated for the job.

What are the factors that affect the performance of a scheduler?

Thus how long it takes to execute a process is also an important factor. Waiting time − It is the time a job waits for resource allocation when several jobs are competing in multiprogramming system. The aim is to minimize the waiting time. Fairness − A good scheduler should make sure that each process gets its fair share of the CPU.

What are the characteristics of a good scheduling algorithm?

Various criteria or characteristics that help in designing a good scheduling algorithm are: CPU Utilization − A scheduling algorithm should be designed so that CPU remains busy as possible. It should make efficient use of CPU. Throughput − Throughput is the amount of work completed in a unit of time.

What are the components involved in CPU scheduling?

Dispatcher: Dispatcher is another component that is involved in CPU scheduling. It is a module plays a significant part in the scheduling process. It transfers the control of the CPU to the next process which needs to be executed as chosen by the short-term scheduler.