Table of Contents
What is a Short-Term Scheduler?
The short-term scheduler sometimes referred to as the CPU scheduler, is an essential component of a multitasking operating system. It is responsible for deciding which processes will be allocated the processor’s time and in what order they will be run.
The short-term scheduler decides which processes are ready to execute and then chooses from among them the one to be run next. The short-term scheduler must make decisions quickly and efficiently, ensuring that the processor is used effectively and efficiently. It uses various scheduling algorithms.
The short-term scheduler takes into account various process characteristics. It decides which processes are ready to execute and prioritizes those processes based on their priority level. It also considers the time each process has been running and how much CPU time each strategy will require.
The short-term scheduler also handles situations such as context switching. The short-term scheduler is essential for ensuring that the processor is used effectively and efficiently. It makes decisions quickly and efficiently and must also consider various process characteristics. It also can handle context switching quickly and efficiently. The short-term scheduler is an essential component of a multitasking operating system and ensures that the processor is used effectively and efficiently.
What is a Long-Term Scheduler?
Long-term schedulers, also known as job schedulers, are an integral part of any operating system. They are responsible for scheduling jobs that need to be executed by the processor. The long-term scheduler determines when and which positions should be completed by allocating resources to them.
It aims to ensure that all jobs are executed reasonably and efficiently. The scheduler will then create a schedule to ensure that appointments are conducted according to these criteria.
The long-term scheduler also has to consider the system’s security. It has to ensure that only authorized users can access the system and that any malicious activity is blocked. It also has to ensure that all jobs are executed securely.
The long-term scheduler is responsible for resource allocation. It has to ensure that all jobs have access to the resources they need to be executed efficiently, including allocating the necessary memory and processor time to each job.
The long-term scheduler is also responsible for setting up the environment for the jobs. It includes setting up the user environment and executing any necessary commands. In conclusion, the long-term scheduler is essential to any operating system. It is an integral part of any operating system and must be considered when developing software.
Difference Between Short-Term Scheduler and Long-Term Scheduler
- The short-term scheduler determines which process to run next, while the long-term scheduler decides which methods should be brought into memory and executed.
- Short-term scheduler focuses on the individual process and its needs, while long-term scheduler focuses on the system.
- The short-term scheduler is non-preemptive, while the long-term scheduler is preemptive.
- The short-term scheduler is concerned with process scheduling, while the long-term scheduler is concerned with memory management.
- The short-term scheduler makes decisions in a much shorter time than the long-term one.
Comparison Between Short-Term Scheduler and Long-Term Scheduler
|Parameters of Comparison||Short-Term Scheduler||Long-Term Scheduler|
|Scope||Handle processes that can be completed in seconds to minutes.||Handle processes that take minutes to hours to complete.|
|Functionality||Determine when processes should be moved from the ready queue to the running state.||Determine which processes should be admitted into the ready queue.|
|Flexibility||They are more adaptable since they can be easily modified to match the current system state best.||They need to be more flexible and require more effort to change.|
|Granularity||Finer granularity||Coarser granularity|
|Time Quantum||Shorter time quantum||Longer time quantum|