amazon-ssm-agent — Engineering Performance
3 engineers all time · Jan 2025 – Aug 2026 · built 2026-09-10 · GitHub
Performance snapshot
Today's rolling 90-day reading for amazon-ssm-agent, compared with the start of the series. Pick a window to move that comparison point.
Avg. perf / dev / mo
−89.5%
0.47 → 0.05 ETV
Active engineers
±0%
3.0 → 3.0
Features
−4.7pp
4.7% → 0.0%
vs. AWS
0.06x
1.5x → 0.06x · −94% below
amazon-ssm-agent vs. AWS
Per-engineer ETV for amazon-ssm-agent 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 amazon-ssm-agent, against its pre-AI baseline. Each subject has its own: amazon-ssm-agent's is 0.47 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.
Rocky Li owns 58.0 % of commits.
Behind the numbers
Written summary of the work completed each month.
No monthly reports available yet.
Most impactful commits
Top 10 by ETV in the all-time window.
- 2.1ETVAdd new Updater metrics cr: https://code.amazon.com/reviews/CR-174007338Haoran Ren · 5690184f · 2025-01-24
- 0.9ETVAdded metrics for the EC2Detector and IMDS EC2 status findings, with any errors occurred while checking the status locally cr: https://code.amazon.com/reviews/CR-192105434Dragan Mihaljevic · 57408f4f · 2025-04-12
- 0.7ETVApply Agent configurations in ssm-cli endpoint selection cr: https://code.amazon.com/reviews/CR-223630029Haoran Ren · b6bedf6d · 2025-09-24
- 0.6ETVAllow custom hibernation max interval configuration, refactor hibernation to fix ping leak and correct interval behavior cr: https://code.amazon.com/reviews/CR-185976104Rocky Li · 6f1ab99a · 2025-03-26
- 0.4ETVAdd ssm-setup-cli parameter -use-dualstack-endpoint to support IPv6 networkHaoran Ren · 4e7344dc · 2025-09-24
- 0.4ETVavoid cartesian complexity for IP check on instances with large amount of network interfaces cr: https://code.amazon.com/reviews/CR-225497458Rocky Li · 4e026e0a · 2025-10-01
- 0.3ETVAdd and use BuildSafePath method to prevent path traversal in orchestration directory cr: https://code.amazon.com/reviews/CR-179131524Rocky Li · d6e947cd · 2025-02-19
- 0.3ETVAdd Agent configuration UseDualStackEndpoint to support IPv6 networkHaoran Ren · 1e8fc863 · 2025-09-24
- 0.3ETVAdd actionable message for runcommand indicating cloudwatch plugin deprecation cr: https://code.amazon.com/reviews/CR-269287499Rocky Li · 105022c9 · 2026-02-19
- 0.3ETVImplement flush credentials command in ssm-cli cr: https://code.amazon.com/reviews/CR-266071140Rocky Li · 63402721 · 2026-02-18