google/highway
What happens to a stranger's pull request here, in the Porchlamp snapshot of 17 October 2026.
Outside pull requests to google/highway got a first human reply in a median of 8.6 hours (189 pull requests, 19 April to 16 October 2026); 1% got none within 14 days. It ranks 1,687 of 3,219 overall. It is not ranked for first-time contributors: not enough evidence to show under this lens.
| Rank | 1,687 of 3,219 |
|---|---|
| Score | 49.82 |
| Tier | C |
| Median first reply | 8.6 hours |
| 14-day no-reply share | 1% |
| First-timer rank | Not enough evidence to show under this lens. |
| Ecosystem | C and C++ |
| Window | 19 April to 16 October 2026 |
Composite
- Rank
- 1,687 of 3,219
- Score
- 49.82
- Tier
- C
- Coverage
- 88% · Ceiling A
- Quadrant
- Nursery
Coordinates: leverage 44.9 (coverage 100%), friction 42.4 (coverage 80%)
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 97.6 | 80% |
| Criticality | 51.9 | 100% |
| Governance | 29.5 | 100% |
| Rigor | 43.6 | 100% |
| Accessibility | 0.0 | 50% |
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. | 96.0% | 100.0 | 74 | 19 April to 18 July 2026 | primaryraw/pr_window/google__highway.json |
| PR Ghost Rate (14d)Share of outside pull requests with no maintainer response, merge or close within 14 days. | 0.6% | 98.7 | 156 | 20 April to 17 October 2026 | primaryraw/pr_window/google__highway.json |
| First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged. | Not shown: Collector failure | ||||
| Time to First ResponseMedian hours from an outside pull request opening to its first substantive human reply. | 8.6 hours (0.4 days) | 100.0 | 189 | 19 April to 16 October 2026 | primaryraw/pr_window/google__highway.json |
| Time to Merge (p90)Hours within which 90% of merged outside pull requests were merged. | 94.9 hours (4 days) | 82.6 | 394 | 19 April to 16 October 2026 | primaryraw/pr_window/google__highway.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. | 0.519 | 51.9 | — | — | proxy:no_dependents_signalraw/github_meta/google__highway.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 | 867 | — | primaryraw/commits_365d/google__highway.json |
| Legal IP RegimeThe contributor licence regime: DCO, none, a foundation CLA or a corporate CLA. | Company CLA | 25.0 | — | — | primaryraw/governance/google__highway.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/google__highway.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/google__highway.json |
| Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100. | 64 | 64.0 | — | — | primaryraw/scorecard/google__highway.json |
| Substantive Review RateShare of decided pull requests that received a substantive review. | 16.1% | 20.2 | 428 | 19 April to 16 October 2026 | primaryraw/pr_window/google__highway.json |
Accessibility
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Developer ExperienceDeveloper experience, 0 to 100: half CI run time, half setup signals. | 0 | 0.0 | 14 | — | primaryraw/actions_runs/google__highway.json |
| 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/google__highway.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 | 1,687 of 3,219 | 49.82 | C | Rated |
| First-timer | Not enough evidence to show under this lens. | |||
| 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 | 1,917 of 3,696 | 49.60 | C | Rated |
Integrity
- Snapshot
- 2026-10-17
- Raw hash
- bd1a8c801614ab0b71205d16b80641275ebc244e84ebedd2031bdccad6fa44af
No suspicion flags on this repository.
The full record is in data/2026-10-17/repos/14.json, under the key google/highway.
How every number is measured: Porchlamp methodology.
Open an issue about this record and say what looks wrong.
Porchlamp (2026). google/highway. Snapshot 2026-10-17. https://porchlamp.org/projects/google/highway/. CC BY 4.0.
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