انظمة

by executing special operations called

• tactical units
• covert teams
• military divisions
• system calls or monitor call

particular location usually contains

• random objects
• historical events
• geographical boundaries
• the starting address

purpose of process scheduling

• To prioritize user input over system processes.
• is to select one of the processes in memory to be executed in the processor

• To allocate memory for each process during execution.
• To increase the number of processes running simultaneously.

meaning the process spends its time between execution inside the processor and waiting for input or output.

• Burst Cycle

• The process is memory-bound.
• The process is network-bound.
• The process is CPU-bound.

Schedules operations based on the resources they need (memory / input / output).

• Long Term scheduler or Job Scheduler

• Medium Term Scheduler

• Short Term Scheduler or CPU Scheduler

It suspends the operations for which its resources are not currently available.

• Long Term scheduler or Job Scheduler

• Medium Term Scheduler

• Short Term Scheduler or CPU Scheduler

Choosing the processes to be loaded into memory.

• Medium Term Scheduler

• Long Term scheduler or Job Scheduler

• Short Term Scheduler or CPU Scheduler

Determines which process to start depending on the order and preference.

• Long Term scheduler or Job Scheduler

• Medium Term Scheduler

• Short Term Scheduler or CPU Scheduler

Not used in time division systems.

• Long Term scheduler or Job Scheduler

• Medium Term Scheduler

• Short Term Scheduler or CPU Scheduler

It selects a process from the processes in memory that are ready for execution and reserves the processor for it.

• Long Term scheduler or Job Scheduler

• Medium Term Scheduler

• Short Term Scheduler or CPU Scheduler