Virtual Memory Optimization Tool

A comprehensive web-based simulation tool for visualizing and understanding virtual memory management concepts including paging, segmentation, page replacement algorithms, and memory fragmentation.

Features

1. Paging Simulation

• Visual representation of physical and virtual memory
• Real-time page table updates
• Page fault visualization with animations
• Demand paging simulation

2. Page Replacement Algorithms

• FIFO (First In First Out)
• LRU (Least Recently Used)
• Optimal Algorithm
• Clock Algorithm (Second Chance)

3. Segmentation Visualization

• Interactive segment allocation
• Segment table representation
• Address translation demonstration

4. Fragmentation Simulation

• Internal fragmentation visualization
• External fragmentation demonstration
• Fragmentation metrics calculation

5. Performance Analysis

• Real-time statistics (page faults, hit ratio, memory utilization)
• Comparative algorithm performance charts
• Historical performance tracking

How to Use

Basic Setup

1. Open index.html in a modern web browser
2. Configure simulation parameters:
   • Physical Memory Size (number of frames)
   • Virtual Memory Size (number of pages)
   • Page Size (in KB)
   • Reference String (comma-separated page numbers)

Running Simulations

1. Quick Simulation: Click "Run Simulation" to automatically process all references
2. Step-by-Step: Click "Step Through" to manually process one reference at a time
3. Algorithm Comparison: Change the algorithm and compare performance metrics

Customization

• Random Input: Generate random reference strings
• Segmentation: Add custom memory segments
• Fragmentation: Switch between internal/external fragmentation modes

Educational Value

This tool helps understand:

• How virtual memory systems work
• Different page replacement strategies
• Impact of fragmentation on memory utilization
• Trade-offs between various algorithms
• Real-world memory management scenarios

Technical Implementation

Frontend

• HTML5/CSS3: Responsive design with modern UI
• JavaScript (ES6+): Core simulation logic
• Chart.js: Performance visualization
• Font Awesome: Icon system

Key Classes

• VirtualMemorySimulator: Main simulation controller
• PageReplacementAlgorithms: Algorithm implementations
• Interactive visualization components

Prerequisites

• Modern web browser (Chrome, Firefox, Edge, Safari)
• No additional installations required

Files Structure