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docs: update build performance benchmarks #123

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18 changes: 2 additions & 16 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -403,27 +403,13 @@ Self-measured on every release via CI ([build benchmarks](generated/BUILD-BENCHM

| Metric | Latest |
|---|---|
| Build speed (native) | **1.9 ms/file** |
| Build speed (native) | **2.1 ms/file** |
| Build speed (WASM) | **6.6 ms/file** |
| Query time | **2ms** |
| ~50,000 files (est.) | **~95.0s build** |
| ~50,000 files (est.) | **~105.0s build** |

Metrics are normalized per file for cross-version comparability. Times above are for a full initial build — incremental rebuilds only re-parse changed files.

### Lightweight Footprint

<a href="https://www.npmjs.com/package/@optave/codegraph"><img src="https://img.shields.io/npm/unpacked-size/@optave/codegraph?style=flat-square&label=unpacked%20size" alt="npm unpacked size" /></a>

Only **3 runtime dependencies** — everything else is optional or a devDependency:

| Dependency | What it does | | |
|---|---|---|---|
| [better-sqlite3](https://github.com/WiseLibs/better-sqlite3) | Fast, synchronous SQLite driver | ![GitHub stars](https://img.shields.io/github/stars/WiseLibs/better-sqlite3?style=flat-square&label=%E2%AD%90) | ![npm downloads](https://img.shields.io/npm/dw/better-sqlite3?style=flat-square&label=%F0%9F%93%A5%2Fwk) |
| [commander](https://github.com/tj/commander.js) | CLI argument parsing | ![GitHub stars](https://img.shields.io/github/stars/tj/commander.js?style=flat-square&label=%E2%AD%90) | ![npm downloads](https://img.shields.io/npm/dw/commander?style=flat-square&label=%F0%9F%93%A5%2Fwk) |
| [web-tree-sitter](https://github.com/tree-sitter/tree-sitter) | WASM tree-sitter bindings | ![GitHub stars](https://img.shields.io/github/stars/tree-sitter/tree-sitter?style=flat-square&label=%E2%AD%90) | ![npm downloads](https://img.shields.io/npm/dw/web-tree-sitter?style=flat-square&label=%F0%9F%93%A5%2Fwk) |

Optional: `@huggingface/transformers` (semantic search), `@modelcontextprotocol/sdk` (MCP server) — lazy-loaded only when needed.

## 🤖 AI Agent Integration
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@greptile-apps greptile-apps bot Feb 26, 2026

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The "Lightweight Footprint" section (h3 subsection with dependency table) was unintentionally removed. The regex in scripts/update-benchmark-report.js:220 doesn't preserve h3 subsections as the comment claims - it matches from ## 📊 Performance to the next h2 header, consuming everything in between including the ### Lightweight Footprint subsection.


### MCP Server
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61 changes: 47 additions & 14 deletions generated/BUILD-BENCHMARKS.md
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Expand Up @@ -5,6 +5,8 @@ Metrics are normalized per file for cross-version comparability.

| Version | Engine | Date | Files | Build (ms/file) | Query (ms) | Nodes/file | Edges/file | DB (bytes/file) |
|---------|--------|------|------:|----------------:|-----------:|-----------:|-----------:|----------------:|
| 2.4.0 | native | 2026-02-26 | 109 | 2.1 ↑11% | 1.7 ↑13% | 5.9 ~ | 9.7 ↑7% | 4434 ↑15% |
| 2.4.0 | wasm | 2026-02-26 | 109 | 6.6 ~ | 2.2 ↑5% | 5.9 ~ | 9.7 ↑7% | 4434 ↑15% |
| 2.3.0 | native | 2026-02-24 | 99 | 1.9 ~ | 1.5 ↑7% | 5.8 ↑7% | 9.1 ~ | 3848 ~ |
| 2.3.0 | wasm | 2026-02-24 | 99 | 6.6 ~ | 2.1 ↑11% | 5.8 ~ | 9.1 ↑3% | 3848 ~ |
| 2.1.0 | native | 2026-02-23 | 92 | 1.9 ↓24% | 1.4 ↑17% | 5.4 ↑6% | 9.1 ↓47% | 3829 ↓14% |
Expand All @@ -18,37 +20,68 @@ Metrics are normalized per file for cross-version comparability.

| Metric | Value |
|--------|-------|
| Build time | 183ms |
| Build time | 228ms |
| Query time | 2ms |
| Nodes | 575 |
| Edges | 897 |
| DB size | 372 KB |
| Files | 99 |
| Nodes | 644 |
| Edges | 1,062 |
| DB size | 472 KB |
| Files | 109 |

#### WASM

| Metric | Value |
|--------|-------|
| Build time | 649ms |
| Build time | 717ms |
| Query time | 2ms |
| Nodes | 575 |
| Edges | 897 |
| DB size | 372 KB |
| Files | 99 |
| Nodes | 644 |
| Edges | 1,062 |
| DB size | 472 KB |
| Files | 109 |

### Estimated performance at 50,000 files

Extrapolated linearly from per-file metrics above.

| Metric | Native (Rust) | WASM |
|--------|---:|---:|
| Build time | 95.0s | 330.0s |
| DB size | 183.5 MB | 183.5 MB |
| Nodes | 290,000 | 290,000 |
| Edges | 455,000 | 455,000 |
| Build time | 105.0s | 330.0s |
| DB size | 211.4 MB | 211.4 MB |
| Nodes | 295,000 | 295,000 |
| Edges | 485,000 | 485,000 |

<!-- BENCHMARK_DATA
[
{
"version": "2.4.0",
"date": "2026-02-26",
"files": 109,
"wasm": {
"buildTimeMs": 717,
"queryTimeMs": 2.2,
"nodes": 644,
"edges": 1062,
"dbSizeBytes": 483328,
"perFile": {
"buildTimeMs": 6.6,
"nodes": 5.9,
"edges": 9.7,
"dbSizeBytes": 4434
}
},
"native": {
"buildTimeMs": 228,
"queryTimeMs": 1.7,
"nodes": 644,
"edges": 1062,
"dbSizeBytes": 483328,
"perFile": {
"buildTimeMs": 2.1,
"nodes": 5.9,
"edges": 9.7,
"dbSizeBytes": 4434
}
}
},
{
"version": "2.3.0",
"date": "2026-02-24",
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