What are the functions of the CPU scheduler?

What is the difference between the job scheduler the CPU scheduler?

1. Job scheduler is also called long term scheduler and CPU scheduler is called short term scheduler. 2. Job scheduler selects the processes from the job pool and load them in to the memory for execution. in other hand CPU scheduler selects among the processes that are in ready to execute and allocate the CPU to one of them. 3. CPU scheduler is faster than the process scheduler.

What is the difference between process scheduling and CPU scheduling?

1. Job scheduler is also called long term scheduler and CPU scheduler is called short term scheduler.2. Job scheduler selects the processes from the job pool and load them in to the memory for execution. in other hand CPU scheduler selects among the processes that are in ready to execute and allocate the CPU to one of them.3. CPU scheduler is faster than the process scheduler.Read more: What_is_the_difference_between_the_job_scheduler_the_CPU_scheduler

What are the different functions of Syntax phase Scheduler?

Syntax Phase Scheduler basically check which process should be allocate from the ready queue to the CPU for execution.

What is the differences between the job scheduling and process scheduling?

Jobs or processes are the same. Whereas, Job scheduler and CPU scheduler are two different terms. Job scheduler is also called long term scheduler and CPU scheduler is called short term scheduler. While Job scheduler selects the processes from the job pool (Job pool is on the Hard disk) and load them in to the memory (Main Memory or RAM) for execution. in other hand CPU scheduler selects among the processes (in RAM) that are ready for execution and allocates the CPU to one of them. Hope I got it right and answered your query. Sorry for any mistakes as I'm not perfect as well. :) Cheers, KV

What is Control Processing Unit burst and Input and Output burst?

The process of selecting the next job that will run on the CPU belongs to the short-term or CPU scheduler. The CPU scheduler can only pick from the jobs that are already in memory and ready to go. The scheduler works in cooperation with the interrupt system. • The scheduler assigns the CPU to perform computation on behalf of a particular process or thread within a process. • CPU can be "borrowed" from its current process by an interrupt. It is under the control of external devices not scheduler. Interrupts can be disabled for a short time. • When a process or thread requests an I/O transfer, it normally becomes ineligible to use the CPU until the transfer is complete. This means that the scheduler will have to choose a new process or a new thread within the same process to use the CPU. • The process or thread that requested the I/O again becomes eligible to use the CPU when the I/O transfer is complete. CPU I/O Burst Cycle The execution of a process consists of an alternation of CPU bursts and I/O bursts. A process begins and ends with a CPU burst. In between, CPU activity is suspended whenever an I/O operation is needed. • If the CPU bursts are relatively short compared to the I/O bursts, then the process is said to be I/O bound. For example, a typical data processing task involves reading a record, some minimal computation and writing a record. • If CPU bursts are relatively long compared to I/O bursts, a process is said to be CPU bound. A number crunching task involves an I/O burst to read parameters. A very long CPU burst and another I/O burst is required to write results

What is CPU scheduling?

The CPU scheduler is the part of the Operating System that determines when to allow each thread to execute. Usually this is done by seeing if all the wait conditions, such as IO wait, timer wait, semaphore wait, etc. have been cleared, and if the thread priority or round-robin turn criteria have been met.

Why is it important for the scheduler to distinguish IO-bound programs from CPU-bound programs?

Any CPU will have an I/O which en ply external devices data transfers. The CPU internally will process data. While both are data bus they are definitely not the same

What is a preemptive and non preemptive algorithm and explain with example?

Preemptive scheduler reruns scheduling decision when process becomes ready. If the new process has priority over running process, the CPU preempts the running process and executes the new process. Non-preemptive scheduler only does scheduling decision when running process voluntarily gives up CPU. In effect, it allows every running process to finish its CPU burst.

Is the Process Scheduler is also called the high-level scheduler?

No. The Job Scheduler is the high-level scheduler.

What is the name of the chip that carries out the functions of a CPU?

microprocessor

Parts of the CPU and functions?

Parts of the CPU and functions i). C.U = control unit, used for processing data ii). A.L.U= Arithmetic and Logic Unit, used for calculations

How would you describe the functions of CPU?

The function of the CPU (Central Processing Unit) is the heart of the computer. Everything the computer needs to do has to go through the CPU. The CPU tells the computer what to do, when to do it, and how to do it.