Tencent/ncnn
What happens to a stranger's pull request here, in the Porchlamp snapshot of 17 October 2026.
Outside pull requests to Tencent/ncnn got a first human reply in a median of 19.1 hours (100 pull requests, 18 April to 15 October 2026); 53% got none within 14 days. It ranks 2,809 of 3,219 overall. For first-time contributors it ranks 1,517 of 1,525 (the bottom 1%).
| Rank | 2,809 of 3,219 |
|---|---|
| Score | 38.01 |
| Tier | D |
| Median first reply | 19.1 hours |
| 14-day no-reply share | 53% |
| First-timer rank | 1,517 of 1,525 |
| Ecosystem | C and C++ |
| Window | 18 April to 15 October 2026 |
Composite
- Rank
- 2,809 of 3,219
- Score
- 38.01
- Tier
- D
- Coverage
- 90% · Ceiling A
- Quadrant
- Graveyard
Coordinates: leverage 41.4 (coverage 100%), friction 62.4 (coverage 87%)
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 57.4 | 100% |
| Criticality | 49.0 | 100% |
| Governance | 29.5 | 100% |
| Rigor | 36.7 | 100% |
| Accessibility | 0.0 | 35% |
The measured parameters
Responsiveness
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Decision Rate (90d)Share of outside pull requests that were merged or closed within 90 days. | 47.4% | 59.2 | 38 | 18 April to 17 July 2026 | primaryraw/pr_window/Tencent__ncnn.json |
| PR Ghost Rate (14d)Share of outside pull requests with no maintainer response, merge or close within 14 days. | 53.3% | 0.0 | 107 | 20 April to 17 October 2026 | primaryraw/pr_window/Tencent__ncnn.json |
| First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged. | 69.6% | 87.0 | 23 | — | primaryraw/author_history/Tencent__ncnn.json |
| Time to First ResponseMedian hours from an outside pull request opening to its first substantive human reply. | 19.1 hours (0.8 days) | 83.2 | 100 | 18 April to 15 October 2026 | primaryraw/pr_window/Tencent__ncnn.json |
| Time to Merge (p90)Hours within which 90% of merged outside pull requests were merged. | 1984.0 hours (82.7 days) | 2.7 | 56 | 18 April to 15 October 2026 | primaryraw/pr_window/Tencent__ncnn.json |
Criticality
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| DependentsPackages in the registry that depend on this project, counted once each. | Not shown: Not applicable | ||||
| Monthly DownloadsDownloads from the package registry in a month. | Not shown: Not applicable | ||||
| OpenSSF CriticalityOpenSSF criticality score from 0 to 1, computed from the project's public activity signals. | 0.49 | 49.0 | — | — | proxy:no_dependents_signalraw/github_meta/Tencent__ncnn.json |
Governance
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Elephant FactorThe fewest organisations that account for half of the last year's commits. | 1 | 25.0 | 319 | — | primaryraw/commits_365d/Tencent__ncnn.json |
| Legal IP RegimeThe contributor licence regime: DCO, none, a foundation CLA or a corporate CLA. | Company CLA | 25.0 | — | — | primaryraw/governance/Tencent__ncnn.json |
| Promotion LadderHow openly a contributor can become a maintainer, from closed to verified. | No written path to becoming a maintainer | 40.0 | — | — | primaryraw/governance/Tencent__ncnn.json |
Rigor
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| AI Policy PostureWhether the project has a written policy on AI-assisted contributions. | No written AI policy | 40.0 | — | — | primaryraw/governance/Tencent__ncnn.json |
| Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100. | 60 | 60.0 | — | — | primaryraw/scorecard/Tencent__ncnn.json |
| Substantive Review RateShare of decided pull requests that received a substantive review. | 1.8% | 2.3 | 109 | 18 April to 15 October 2026 | primaryraw/pr_window/Tencent__ncnn.json |
Accessibility
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Developer ExperienceDeveloper experience, 0 to 100: half CI run time, half setup signals. | Not shown: Insufficient sample size | ||||
| Newcomer ConversionShare of first-time authors whose first pull request merged within 180 days. | Not shown: Collector failure | ||||
| Newcomer Issue SupplyOpen, unassigned, up-to-date issues marked for newcomers. | 0 | 0.0 | — | — | primaryraw/gfi/Tencent__ncnn.json |
| Newcomer Return RateShare of those merged first-time authors who sent a second pull request within 90 days. | Not shown: Collector failure | ||||
Persona view
| Persona | Rank | Score | Tier | Status |
|---|---|---|---|---|
| Balanced | 2,809 of 3,219 | 38.01 | D | Rated |
| First-timer | 1,517 of 1,525 | 33.09 | D | Rated |
| Career capital | This repository's production-criticality signal is not yet high enough for career-capital ranking. | |||
| Senior systems | Fewer than 3 organizations account for most commits (not multi-vendor). | |||
| AI-assisted | 3,212 of 3,696 | 38.55 | D | Rated |
Integrity
- Snapshot
- 2026-10-17
- Raw hash
- 9cee66bbfff0c970d2b13d8387d2414a7bdb4f029e3b620956091b6348693fac
No suspicion flags on this repository.
The full record is in data/2026-10-17/repos/1e.json, under the key Tencent/ncnn.
How every number is measured: Porchlamp methodology.
Open an issue about this record and say what looks wrong.
Porchlamp (2026). Tencent/ncnn. Snapshot 2026-10-17. https://porchlamp.org/projects/tencent/ncnn/. CC BY 4.0.
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