COS Quiz 3

Each process in an operating system can be in one of several states, including new, ready, running, waiting, and terminated.

• PROCESS STATE

• CONTEXT SWITCHING

• TIME QUANTUM

• Preemptive Scheduling

• Non-preemptive Scheduling

This is the process of saving the state of a currently running process and loading the state of the next scheduled process.

• PROCESS STATE

• CONTEXT SWITCHING

• TIME QUANTUM

• Preemptive Scheduling

• Non-preemptive Scheduling

Defines the maximum time a process can run before being preempted. This helps

ensure fair CPU time allocation among processes.

• PROCESS STATE

• CONTEXT SWITCHING

• TIME QUANTUM

• Preemptive Scheduling

• Non-preemptive Scheduling

The operating system can forcibly remove a process from the CPU to allow another process to run. This is essential for responsive systems.

• PROCESS STATE

• CONTEXT SWITCHING

• TIME QUANTUM

• Preemptive Scheduling

• Non-preemptive Scheduling

Once a process is given the CPU, it runs to completion or voluntarily yields control. This can lead to inefficiencies in systems with varying process requirements.

• PROCESS STATE

• CONTEXT SWITCHING

• TIME QUANTUM

• Preemptive Scheduling

• Non-preemptive Scheduling

is an integral part of the operating system that decides which process will receive CPU time at any given moment.

• CPU Scheduler

• Dispatcher

• Dispatch Latency

is the component that carries out the scheduling decisions made by the CPU scheduler.

• CPU Scheduler

• Dispatcher

• Dispatch Latency

This term refers to the time taken to stop one process and start executing another.

• CPU Scheduler

• Dispatcher

• Dispatch Latency

• Function: Decides which processes are admitted to the system for processing.

• Frequency: Executes less frequently, as it controls the degree of multiprogramming.

• Goal: To maintain a balance between I/O and CPU-bound processes.

• Long-term Scheduler (Job Scheduler)

• Short-term Scheduler (CPU Scheduler)

• Medium-term Scheduler

• Function: Selects one of the processes in the ready queue to be executed next.

• Frequency: Executes very frequently (milliseconds).

• Goal: To maximize CPU utilization and ensure quick response time.

• Long-term Scheduler (Job Scheduler)

• Short-term Scheduler (CPU Scheduler)

• Medium-term Scheduler