lightgbm-org/LightGBM
What happens to a stranger's pull request here, in the Porchlamp snapshot of 14 October 2026.
Outside pull requests to LightGBM got a first human reply in a median of 7.6 hours (115 pull requests, 10 April to 7 October 2026); 13% got none within 14 days. It ranks 860 of 3,833 overall and 780 of 1,968 for first-time contributors.
Rating
- Score: 59.69
- Coverage: 100% · Full
- Tier: B
- Quadrant: Sweet Spot
- Ecosystem: systems (C, C++ and Zig)
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 73.1 | 100% |
| Criticality | 49.1 | 100% |
| Governance | 59.3 | 100% |
| Rigor | 69.3 | 100% |
| Accessibility | 45.8 | 100% |
Rank in each lens
| Lens | Standing |
|---|---|
| Balanced | Rank 860 of 3,833 |
| First-timer | Rank 780 of 1,968 |
| Career capital | Not ranked: This repository's production-criticality signal is not yet high enough for career-capital ranking. |
| Senior systems | Not ranked: Fewer than 3 organizations account for most commits (not multi-vendor). |
| AI-assisted | Rank 526 of 3,929 |
The measured parameters
| Parameter | Value | Count | Window | What it measures |
|---|---|---|---|---|
| Time to First Response | 7.6294 | 115 | 10 April to 7 October 2026 | Median hours from an outside pull request opening to its first substantive human reply. |
| Decision Rate (90d) | 0.7826 | 46 | 10 April to 9 July 2026 | Share of outside pull requests that were merged or closed within 90 days. |
| First-timer Merge Rate | 0.2364 | 55 | — | Share of first-time outside authors' decided pull requests that were merged. |
| PR Ghost Rate (14d) | 0.125 | 112 | 16 April to 13 October 2026 | Share of outside pull requests with no maintainer response, merge or close within 14 days. |
| Time to Merge (p90) | 856.9233 | 39 | 10 April to 7 October 2026 | Hours within which 90% of merged outside pull requests were merged. |
| Dependents | Not shown: Not applicable | — | — | Packages in the registry that depend on this project, counted once each. |
| OpenSSF Criticality | 0.4915 | — | — | OpenSSF criticality score from 0 to 1, computed from the project's public activity signals. |
| Monthly Downloads | Not shown: Not applicable | — | — | Downloads from the package registry in a month. |
| Legal IP Regime | NONE | — | — | The contributor licence regime: DCO, none, a foundation CLA or a corporate CLA. |
| Elephant Factor | 2 | 161 | — | The fewest organisations that account for half of the last year's commits. |
| Promotion Ladder | AD_HOC | — | — | How openly a contributor can become a maintainer, from closed to verified. |
| Pipeline Defenses | 93.6748 | 82 | — | How well the project's build and review pipeline defends against bad changes, 0 to 100. |
| AI Policy Posture | AD_HOC | — | — | Whether the project has a written policy on AI-assisted contributions. |
| Substantive Review Rate | 0.5294 | 102 | 10 April to 7 October 2026 | Share of decided pull requests that received a substantive review. |
| Newcomer Issue Supply | 3 | — | — | Open, unassigned, up-to-date issues marked for newcomers. |
| Newcomer Conversion | 0.3529 | 17 | — | Share of first-time authors whose first pull request merged within 180 days. |
| Newcomer Return Rate | 0 | 6 | — | Share of those merged first-time authors who sent a second pull request within 90 days. |
| Developer Experience | 70.8542 | 10 | — | Developer experience, 0 to 100: half CI run time, half setup signals. |
Similar projects
The ranked projects nearest this one in the same ecosystem.
- o3de/o3de (rank 854)
- emscripten-core/emscripten (rank 856)
- Project-OSRM/osrm-backend (rank 858)
- ptitSeb/box64 (rank 859)
- google/perfetto (rank 861)
Evidence
- Snapshot 2026-10-14, data as of 13 October 2026.
- Record hash:
ab0c16d4720722b409b313c969d265633dbde7f9205b9585515fef210885b780 - The full record is in data/2026-10-14/repos/13.json, under the key
lightgbm-org/LightGBM. - How every number is measured: Porchlamp methodology.
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