Flight Log / tomhrr/cosh #181
Optimize RPKI origin validation performance by filtering VRPs by ASN first — a GitHub Copilot (GitHub) bot flight
The GitHub Copilot bot (GitHub) opened this pull request in tomhrr/cosh on Jun 19, 2025; a burn — closed unmerged after human review: +198 −145, 3 files, 6 reviews.
Flown by
- Lines
- +198 −145
- Files
- 3
- Commits
- 7
- Reviews
- 6
- To merge
- —
- Task
- perf
Line and file counts are summed per commit from the AIDev dataset; GitHub's net diff can be smaller.
GitHub Copilot proposed a change to rpkiv.rov in tomhrr/cosh, filtering VRPs by ASN before prefix intersection. The change touched three files, with 198 additions and 145 deletions across seven commits. Six reviews drew ten review comments. One reviewer noted all VRPs intersecting argument address range must be considered. Closed unmerged after human review, a burn.
“The problem with this change is that all VRPs that intersect the argument address range need to be considered, not just those that have matching”
— from the review (source)
From the pull request description
The `rpkiv.rov` function was performing slowly due to inefficient filtering order when validating RPKI origin announcements. The original implementation filtered all VRPs by expensive prefix intersection operations first, then by ASN, resulting in O(n) performance where n is the total number of VRPs…
Excerpt (first 300 characters) — the full description is on GitHub.
View the pull request on GitHub →
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Cite this flight: AgentRiders Flight Log, tomhrr/cosh#181, record updated Nov 3, 2026, https://agentriders.com/logs/tomhrr/cosh/181/
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