https://file.aiquickdraw.com/mathbot/file/17258983777287hofhpgk.jpg

The image shows a problem related to process scheduling with three processes (P1, P2, P3). The table provides key data for each process, such as:

- Execution time
- I/O time
- Priority

There are three tasks:

1. First-In, First-Out (FIFO) scheduling according to the process numbers.
2. Priority-based scheduling without preemption.
3. Priority-based scheduling with preemption.

Each task requires filling in the Gantt charts provided for each process.

### Step-by-step instructions:

#### Given Information:
- **P1:** Execution time: 2 units, I/O time: 2 units, Priority: 3
- **P2:** Execution time: 4 units, I/O time: 3 units, Priority: 2
- **P3:** Execution time: 2 units, I/O time: 2 units, Priority: 1

---

### Task 1: FIFO Scheduling (First In, First Out)
For FIFO, the processes are executed in the order they are listed: P1, P2, P3. You fill the Gantt chart by assigning the CPU time to each process based on its execution time and I/O.

1. **P1**: Execute for 2 units.
2. **P2**: Execute for 4 units.
3. **P3**: Execute for 2 units.

Chart 1 would look like this:
```
P1: ||  
P2: ||||||  
P3: ||  
```

---

### Task 2: Priority-Based Scheduling (No Preemption)
For this case, the highest priority is chosen, and processes are executed without interruptions.

- **P3** has the highest priority (Priority 1), so it will execute first.
- Then **P2** (Priority 2).
- Finally **P1** (Priority 3).

Chart 2:
```
P3: ||  
P2: ||||||  
P1: ||  
```

---

### Task 3: Priority-Based Scheduling (With Preemption)
In this case, the highest priority process interrupts the current process if it arrives during execution.

1. Initially, **P3** (Priority 1) runs for 2 units.
2. Then **P2** (Priority 2) begins, running for 4 units.
3. Finally, **P1** (Priority 3) runs for 2 units.

Chart 3:
```
P3: ||  
P2: ||||||  
P1: ||  
```

---

Would you like me to clarify or adjust any of these schedules?

Fill the 3 tables for FIFO, priority without preemption, and priority with preemption scheduling.

This problem involves scheduling three processes (P1, P2, P3) using FIFO, priority-based without preemption, and priority-based with preemption algorithms. Understand how to fill Gantt charts based on the execution times, I/O times, and priorities of the processes.

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