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DISPATCHER?
The dispatcher is the module that gives control of the CPU to the process selected by the short-time scheduler(selects from among the processes that are ready to execute).
The function involves :
Swithching context
Switching to user mode
Jumping to the proper location in the user program to restart that program.
SCHEDULER? Normally there are 3 types of schedulers are available in operating systems.
1. Long term scheduler
2. Mid term scheduler
3. Short term scheduler
The short term scheduler is also called as the dispatcher which selects the process from the waiting queue and allocates the CPU to that process.
Whereas the Long term scheduler (Admission scheduler) decides which process should be placed in the main memory and updates the waiting queue. This long scheduler is important in the large bound systems like super computers and may not be used frequently as the short term scheduler.
The mis term scheduler available in all systems which is responsible for the swapping in and out operations which means loading the process into, main memory from secondary memory (swap in) and take out the process from main memory and store it into the secondary memory (swap out).
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A planner is a calendar or diary with which you can roughly plan the activities which you will undergo but a scheduler is a calendar or diary that you maintain so as to plan the activities accurately on time.
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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
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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.
If a bus goes 25 miles an hour for 5 hours how far will it have gone?
(25 x 5) = 125 miles I am filled with anxiety and apprehension at the thought that you may be the driver, dispatcher, or scheduler.
Is the Process Scheduler is also called the high-level scheduler?
No. The Job Scheduler is the high-level scheduler.
What are the difference between long term scheduler and medium term scheduler?
buhat mo ug assignment ..ayaw mo pagsalig dire, sa POS ni noh, isumbong tamo ni mam Trigo.hahaha SAKPAN, pero atik rah, panghatag pud mo answer hah ~abalorz bastah mao ni...... Long term scheduler determines which programs are admitted to the system for processing. It controls the degree of multiprogramming. Once admitted, a job becomes a process. Medium term scheduling is part of the swapping function. This relates to processes that are in a blocked or suspended state. They are swapped out of real-memory until they are ready to execute. The swapping-in decision is based on memory-management criteria. Short term scheduler, also know as a dispatcher executes most frequently, and makes the finest-grained decision of which process should execute next. This scheduler is invoked whenever an event occurs. It may lead to interruption of one process by preemption. ~Gi copypaste rpud nako nih.
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
Which scheduler controls the degree of multiprogramming?
Long Term Scheduler
