ros-navigation/navigation2
What happens to a stranger's pull request here, in the Porchlamp snapshot of 14 October 2026.
Outside pull requests to navigation2 got a first human reply in a median of 6.5 hours (281 pull requests, 11 April to 8 October 2026); 8% got none within 14 days. It ranks 47 of 3,833 overall and 45 of 1,968 for first-time contributors.
Rating
- Score: 72.14
- Coverage: 100% · Full
- Tier: A
- Quadrant: Sweet Spot
- Ecosystem: systems (C, C++ and Zig)
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 86.8 | 100% |
| Criticality | 58.1 | 100% |
| Governance | 82.0 | 100% |
| Rigor | 56.6 | 100% |
| Accessibility | 73.5 | 100% |
Rank in each lens
| Lens | Standing |
|---|---|
| Balanced | Rank 47 of 3,833 |
| First-timer | Rank 45 of 1,968 |
| Career capital | Not ranked: This repository's production-criticality signal is not yet high enough for career-capital ranking. |
| Senior systems | Rank 83 of 1,206 |
| AI-assisted | Rank 131 of 3,929 |
The measured parameters
| Parameter | Value | Count | Window | What it measures |
|---|---|---|---|---|
| Time to First Response | 6.4972 | 281 | 11 April to 8 October 2026 | Median hours from an outside pull request opening to its first substantive human reply. |
| Decision Rate (90d) | 0.9263 | 95 | 11 April to 10 July 2026 | Share of outside pull requests that were merged or closed within 90 days. |
| First-timer Merge Rate | 0.5682 | 44 | — | Share of first-time outside authors' decided pull requests that were merged. |
| PR Ghost Rate (14d) | 0.0833 | 204 | 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) | 287.5833 | 240 | 11 April to 8 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 | 0.5813 | — | — | 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 | DCO | — | — | The contributor licence regime: DCO, none, a foundation CLA or a corporate CLA. |
| Elephant Factor | 7 | 382 | — | 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 | 80.8997 | 289 | — | 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 | 0.3259 | 313 | 11 April to 8 October 2026 | Share of decided pull requests that received a substantive review. |
| Newcomer Issue Supply | 8 | — | — | Open, unassigned, up-to-date issues marked for newcomers. |
| Newcomer Conversion | 0.8 | 10 | — | Share of first-time authors whose first pull request merged within 180 days. |
| Newcomer Return Rate | 0.25 | 8 | — | Share of those merged first-time authors who sent a second pull request within 90 days. |
| Developer Experience | 20 | 30 | — | Developer experience, 0 to 100: half CI run time, half setup signals. |
Similar projects
The ranked projects nearest this one in the same ecosystem.
- envoyproxy/envoy (rank 30)
- apache/arrow (rank 31)
- FreeCAD/FreeCAD (rank 37)
- bpftrace/bpftrace (rank 48)
- ClickHouse/ClickHouse (rank 59)
Evidence
- Snapshot 2026-10-14, data as of 13 October 2026.
- Record hash:
6b4432740820fa45d042e05ed8e2bd408af90dfa24578d04cf855f6bfa510b8a - The full record is in data/2026-10-14/repos/a2.json, under the key
ros-navigation/navigation2. - How every number is measured: Porchlamp methodology.
Is something wrong?
Open an issue about this record and say what looks wrong.