karpenter-provider-aws — Engineering Performance
8 engineers all time · Jan 2025 – Sep 2026 · built 2026-09-10 · GitHub
Performance snapshot
Today's rolling 90-day reading for karpenter-provider-aws, compared with the start of the series. Pick a window to move that comparison point.
Avg. perf / dev / mo
−51.7%
0.56 → 0.27 ETV
Active engineers
+25.0%
4.0 → 5.0
Features
−10.2pp
28.6% → 18.4%
vs. AWS
0.33x
1.7x → 0.33x · −67% below
karpenter-provider-aws vs. AWS
Per-engineer ETV for karpenter-provider-aws against AWS as a whole. Both lines are 90-day rolling averages scaled to a 30-day month, so they share one axis and can be read against each other at any point. Pick a window to zoom the chart to it.
Performance Composition
Each month's output split by type of work: Features (new value), Maintenance (sustaining systems), Tests, Docs, and Fixes (rework). The yellow line is output per engineer, so when it rises each engineer is delivering more, whatever the team size did. Unit: Engineering Throughput Value (ETV).
Engineering capacity
Effective engineers behind karpenter-provider-aws, against its pre-AI baseline. Each subject has its own: karpenter-provider-aws's is 0.56 ETV / dev / mo, its first reading in Q1 2025. Per-engineer ETV divided by that gives a capacity multiple, and that multiple applied to the engineers active in the trailing 90 days turns it into engineer-equivalents. The line is the real headcount, so the gap between line and area is what the leverage is worth. Because each baseline is its own, every subject opens at 1.0x on its first day: multiples measure improvement and are not comparable between subjects.
Knowledge concentration
How dependent is this repo on a small number of engineers? Higher top-1 share = higher key-person risk.
Jason Deal owns 24.5 % of commits.
Behind the numbers
Written summary of the work completed each month.
No monthly reports available yet.
Top engineers
Most impactful commits
Top 10 by ETV in the all-time window.
- 3.4ETVfeat: on-demand capacity reservation support (#7726)Jason Deal · eff767c9 · 2025-02-26
- 2.1ETVfeat: Placement Group Support (#9030)Joshua Guo · edd18ec4 · 2026-04-06
- 1.3ETVfeat: capacity block support (#8011)Jason Deal · f242c8f6 · 2025-06-09
- 1.2ETVfeat: support network interface configuration (#9027)Ryan Mistretta · 1de6d8c6 · 2026-04-01
- 1.1ETVfeat: support launching from interruptible ODCRs (#9019)Ryan Mistretta · 122fb211 · 2026-03-20
- 0.8ETVfeat: support EC2 DescribeInstanceStatus health checks in the interruption controller (#9064) Co-authored-by: Brandon Wagner <wagnerbm@amazon.com>Andrew Mitchell · 5d7ed72d · 2026-04-21
- 0.6ETVfeat: Add Node Overlay Support (#8305)Amanuel Engeda · 722a2057 · 2025-09-12
- 0.5ETVfeat: support nodeclaim drift on CA bundle (#9083)Joshua Guo · d6a228cc · 2026-04-22
- 0.5ETVrefactor: instance type filtering (#8016)Jason Deal · 3f5da409 · 2025-05-28
- 0.5ETVfeat: add filtering for NodeClass configurations (#9017)Ryan Mistretta · 24992366 · 2026-03-27