Disk Scheduling Algorithms Visualizer

This project is a university assignment focused on demonstrating and comparing different disk scheduling algorithms. It's developed in Java using the JavaFX framework, allowing you to simulate and visualize how a disk head moves to fulfill read/write requests, offering a clear understanding of each algorithm's efficiency.

Implemented Algorithms

The application includes the following disk scheduling algorithms:

• FCFS (First-Come, First-Served)
• SSTF (Shortest Seek Time First)
• SCAN (Elevator Algorithm)
• C-SCAN (Circular SCAN)
• EDF (Earliest Deadline First) - Real-time algorithm
• FD-SCAN (Feasible Deadline SCAN) - Real-time algorithm

Features

The graphical interface (GUI) provides a comprehensive environment for simulation and analysis:

• Visual Disk Head Path: See a graphical representation of the disk head's movement for each algorithm, making complex concepts easy to grasp.
• Algorithm Selection: Choose the specific disk scheduling algorithm you want to test.
• Customizable Parameters:
  • Number of Requests: Specify how many requests the algorithm needs to process.
  • Disk Size: Define the total range of the disk along which the head will move.
• Detailed Simulation Results: After each simulation, the application returns:
  • Total Simulation Time: Measured in pseudo-time units.
  • Sum of All Head Movements: The total distance the disk head traveled.
  • Number of Killed Requests: (Applicable only for real-time algorithms: EDF and FD-SCAN) Requests that could not be serviced within their deadline.
• Batch Simulation & Comparison: Use the "Pre generate" option to run all algorithms with the same dataset. This feature also displays a comparative table of the total head movements for all algorithms, making performance comparison straightforward.

How to Use

1. Set Parameters: Locate the parameters at the bottom of the window. Adjust the number of requests and disk size according to your simulation needs.
2. Run Single Simulation: Press the button corresponding to the algorithm you wish to test. The results and the disk head's path will be displayed.
3. Run All Simulations (Pre-generate): To test all algorithms with the identical request data, check the "Pre generate" box on the right side of the window (under the simulation results). This will also show a comparative table of head movements for all algorithms.

Technologies Used 🛠️

• Java: The core programming language.
• JavaFX: For building the graphical user interface (GUI).