Performance Monitor: Real-time Performance Analysis for p5.js Web Editor

Increasing Access

A real-time performance monitoring tool that helps users understand why their sketches run slowly and provides actionable suggestions to fix common performance mistakes.

Problem Statement
Many p5.js users, especially beginners, create sketches that run slowly without understanding why. Common mistakes like calling loadImage() inside draw() can make sketches 60x slower than necessary. Currently, users have no way to:

1. See real-time FPS and performance metrics
2. Identify which parts of their code are slow
3. Learn about common performance anti-patterns

Proposed Solution
A performance monitor panel integrated into the p5.js Web Editor that provides:

1. Real-time FPS graph showing frame rate over time
2. Frame time breakdown showing where time is spent
3. Memory usage meter tracking heap usage
4. Smart warnings that detect common performance mistakes
5. Fix suggestions with one-click solutions

How This Increases Access

1. Beginners learn optimization concepts through immediate feedback
2. Educators can demonstrate performance concepts visually
3. Users with older devices can identify why sketches run slowly
4. ESL users benefit from visual indicators instead of text-heavy docs

Feature request details

Feature Components

Component 1: FPS Counter
Component 2: Frame Time Breakdown
Component 3: Memory Usage

┌──────────────────────────────────────────────┐
│ FPS │
│ ┌──────────────────────────────────────────┐ │
│ │ 60 ┤████████████████████████████████████ │ │
│ │ 45 ┤ │ │
│ │ 30 ┤ │ │
│ │ 15 ┤ │ │
│ │ 0 ┼─────────────────────────────────────│ │
│ │ 0s 5s 10s 15s │ │
│ └──────────────────────────────────────────┘ │
│ Current: 58 FPS | Average: 57 FPS │
│ Status: ✅ Good │
└──────────────────────────────────────────────┘

┌──────────────────────────────────────────────┐
│ Frame Time: 16.2ms (target: 16.67ms) │
│ │
│ ██████████████████░░░░░░░░░░░░░░░░ 97% │
│ │
│ Breakdown: │
│ ├─ draw(): 12.4ms ████████████░░░ 76% │
│ ├─ rendering: 2.8ms ███░░░░░░░░░░░░ 17% │
│ └─ other: 1.0ms █░░░░░░░░░░░░░░ 7% │
└──────────────────────────────────────────────┘

┌──────────────────────────────────────────────┐
│ Memory │
│ │
│ Used: 45MB / 100MB │
│ ████████████████░░░░░░░░░░░░░░░░░░ 45% │
│ │
│ Objects tracked: │
│ ├─ Images: 5 (12MB) │
│ ├─ Graphics: 2 (8MB) │
│ ├─ Arrays: 24 (15MB) │
│ └─ Particles: 1,247 (10MB) │
└──────────────────────────────────────────────┘

No files, tests, or entry points are named. Start by mapping the p5.js Web Editor architecture and its sketch execution and panel components, then determine the scope and integration points for FPS, frame-time, memory, warnings, and suggestions; done requires an agreed design and working implementation of the proposed components.