Anonymous
Jun 27
Differentiate between pre-emptive and non pre-emptive?
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ChatGPT
Jun 27
Pre-emptive scheduling involves the operating system interrupting a currently running process in order to give another process a turn to run. This can happen at any time, regardless of the current process's state. Non pre-emptive scheduling, on the other hand, allows a process to run until it voluntarily gives up control of the CPU, such as when it finishes or enters a waiting state.
In pre-emptive scheduling, the operating system has more control over the allocation of CPU time and can prioritize certain processes over others. This can lead to better overall system performance and responsiveness. Non pre-emptive scheduling, on the other hand, may result in longer wait times for certain processes if they are not voluntarily giving up control of the CPU.
Overall, pre-emptive scheduling is generally considered to be more efficient and responsive, but it can also be more complex to implement and manage. Non pre-emptive scheduling may be simpler and more predictable, but it can also lead to potential performance issues if certain processes monopolize the CPU.
In pre-emptive scheduling, the operating system has more control over the allocation of CPU time and can prioritize certain processes over others. This can lead to better overall system performance and responsiveness. Non pre-emptive scheduling, on the other hand, may result in longer wait times for certain processes if they are not voluntarily giving up control of the CPU.
Overall, pre-emptive scheduling is generally considered to be more efficient and responsive, but it can also be more complex to implement and manage. Non pre-emptive scheduling may be simpler and more predictable, but it can also lead to potential performance issues if certain processes monopolize the CPU.
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Google Gemini AI
Jun 27
Pre-emptive Scheduling
- Definition: A scheduling algorithm where the CPU can interrupt a currently running process and assign it to a higher priority process.
- Characteristics:
- Higher priority processes always have precedence.
- Can reduce waiting times for critical processes.
- Ensures that the system is responsive to urgent tasks.
Non Pre-emptive Scheduling
- Definition: A scheduling algorithm where a process that has been assigned to the CPU cannot be interrupted until it completes its execution.
- Characteristics:
- Once a process starts running, it will run until it finishes, even if a higher priority process arrives.
- Simpler to implement than pre-emptive scheduling.
- Provides guaranteed execution time for processes.
Key Differences:
| Feature | Pre-emptive | Non Pre-emptive |
|---|---|---|
| Interruption | Yes | No |
| Priority Handling | Always favors higher priority | Respects first-come, first-served |
| Responsiveness | Higher | Lower |
| Implementation | Complex | Simple |
| Guaranteed Execution | Not guaranteed | Guaranteed |
| Suitable for | Time-critical systems | Batch processing systems |
| Example | Round Robin with priorities | First Come First Served (FCFS) |
- Definition: A scheduling algorithm where the CPU can interrupt a currently running process and assign it to a higher priority process.
- Characteristics:
- Higher priority processes always have precedence.
- Can reduce waiting times for critical processes.
- Ensures that the system is responsive to urgent tasks.
Non Pre-emptive Scheduling
- Definition: A scheduling algorithm where a process that has been assigned to the CPU cannot be interrupted until it completes its execution.
- Characteristics:
- Once a process starts running, it will run until it finishes, even if a higher priority process arrives.
- Simpler to implement than pre-emptive scheduling.
- Provides guaranteed execution time for processes.
Key Differences:
| Feature | Pre-emptive | Non Pre-emptive |
|---|---|---|
| Interruption | Yes | No |
| Priority Handling | Always favors higher priority | Respects first-come, first-served |
| Responsiveness | Higher | Lower |
| Implementation | Complex | Simple |
| Guaranteed Execution | Not guaranteed | Guaranteed |
| Suitable for | Time-critical systems | Batch processing systems |
| Example | Round Robin with priorities | First Come First Served (FCFS) |
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