https://github.com/speakeasy-api/wasm-overhead-research

https://github.com/speakeasy-api/wasm-overhead-research

Last synced: 9 months ago
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• Host: GitHub
• URL: https://github.com/speakeasy-api/wasm-overhead-research
• Owner: speakeasy-api
• License: mit
• Created: 2025-08-19T14:01:38.000Z (11 months ago)
• Default Branch: main
• Last Pushed: 2025-08-19T14:05:22.000Z (11 months ago)
• Last Synced: 2025-09-16T08:57:07.191Z (10 months ago)
• Language: JavaScript
• Size: 1.56 MB
• Stars: 1
• Watchers: 0
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# WASM Overhead research

## Size Comparison

*Data location: `results/size-comparison.csv`*

| Implementation | Raw WASM | Gzipped | Compression | Overhead vs Smallest |

|----------------|----------|---------|-------------|---------------------|

| AssemblyScript | 18.4KB   | 8.2KB   | 55.5%       | Baseline            |

| Porffor        | 512.9KB  | 75.1KB  | 85.3%       | 9.1x                |

| QuickJS        | 633.1KB  | 265.5KB | 58.0%       | 32.3x               |

| Go Basic       | 2,791KB  | 835KB   | 70.1%       | 101.8x              |

| Go + Goja      | 15,571KB | 3,657KB | 76.5%       | 445.7x              |

*Note: TinyGo builds failed during benchmarking but typically produce ~128KB gzipped binaries*

## WebAssembly Cold-Start times

| Implementation | Cold Start (ms) |

|----------------|-----------------|

| AssemblyScript | 0.28            |

| Porffor        | Compilation fails |

| QuickJS        | 1.16            |

| Go Basic       | ~2-3            |

| Go + Goja      | ~5-10           |

## JavaScript Feature Support

| Feature         | AssemblyScript | Porffor | QuickJS | Javy | Go+Goja |

|-----------------|----------------|---------|---------|------|---------|

| ES5             | Partial        | ✅      | ✅      | ✅   | ✅      |

| ES6+            | Partial        | Partial | ✅      | ✅   | ✅      |

| async/await     | ❌             | ❌      | ✅      | ✅   | ✅      |

| eval()          | ❌             | ❌      | ✅      | ✅   | ✅      |

| Regex           | Limited        | ✅      | ✅      | ✅   | ✅      |

| JSON            | ✅             | ✅      | ✅      | ✅   | ✅      |

| TypeScript      | ✅             | ❌      | ❌      | ❌   | ❌      |

## Extism Runtime Overhead

*Data location: `results/engine-overhead.csv`*

| Language    | SDK Size | Dependencies | Total Overhead | Architecture |

|-------------|----------|--------------|----------------|--------------|

| Go          | N/A      | Pure Go      | 0              | Native wazero |

| Rust        | 72KB     | Static       | Embedded       | Static link  |

| JavaScript  | 2.12MB   | None         | 2.12MB         | V8 native    |

| Python      | 11KB     | libextism    | 5.7MB          | FFI          |

| Java        | N/A      | JNA+libextism| 7.0MB          | FFI          |