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When a process is rolled out of memory, it loses its ability to use the CPU (atleast for a while). Describe another situation, where a process loses its ability to use the CPU, but it does not get rolled out
  • a)
    Swapping
  • b)
    Deadlock
  • c)
    Interrupt 
  • d)
    Thrashing
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
When a process is rolled out of memory, it loses its ability to use th...
When an interrupt occurs the process loses the CPU, but regains it as soon as the handler completes. The process is never rolled out of memory.
Note that when timer runout occurs, the process is returned to the ready queue, and it may later be rolled out of memory. When the process blocks, it is moved to a waiting queue, where it may also be rolled out at some point.
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When a process is rolled out of memory, it loses its ability to use th...
Interrupt

An interrupt is a signal sent from a hardware device or software program to the operating system, indicating that an event has occurred that requires immediate attention. When an interrupt occurs, the CPU stops executing the current process and transfers control to a special piece of code called an interrupt handler. The interrupt handler then performs the necessary actions to handle the interrupt, such as saving the current state of the process and executing the appropriate interrupt service routine.

How a Process Loses its Ability to Use the CPU in Interrupt Situation

When an interrupt occurs, the CPU temporarily suspends the execution of the current process and transfers control to the interrupt handler. During this time, the process loses its ability to use the CPU because the CPU is now busy executing the interrupt handler code. The interrupt handler may perform tasks such as handling input/output operations, servicing hardware interrupts, or responding to other system events.

Impact of Interrupts on Process Execution

Interrupts play a crucial role in multitasking operating systems, as they allow the CPU to handle multiple tasks simultaneously. However, the interruption of a process's execution by an interrupt can have both positive and negative impacts:

1. Positive Impact: Interrupts allow the CPU to quickly respond to external events, such as user input or hardware signals, without wasting CPU cycles waiting for those events to occur. This improves system responsiveness and overall performance.

2. Negative Impact: When a process is interrupted, it may need to wait for the interrupt handler to complete its execution before it can resume its execution. This can introduce delays and increase the overall response time of the process. Additionally, if the interrupt handler takes a long time to execute, it may monopolize the CPU, causing other processes to be delayed or starved of CPU resources.

Conclusion

In summary, when a process is interrupted, it loses its ability to use the CPU temporarily while the interrupt handler is executing. Interrupts are essential for handling various system events but can also introduce delays and impact the overall performance of a process depending on the efficiency of the interrupt handling mechanisms.
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When a process is rolled out of memory, it loses its ability to use the CPU (atleast for a while). Describe another situation, where a process loses its ability to use the CPU, but it does not get rolled outa)Swappingb)Deadlockc)Interruptd)ThrashingCorrect answer is option 'C'. Can you explain this answer?
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