| { |
| "name": "Performance regression loop", |
| "objective": "Turn a reproducible performance regression into a profiled, narrow fix that restores the budget without weakening correctness.", |
| "trigger": { |
| "type": "event", |
| "cadence_or_event": "A benchmark or service-level metric regresses beyond the declared noise tolerance." |
| }, |
| "intake": { |
| "sources": ["baseline and candidate commits", "pinned workload", "environment fingerprint", "profiles and telemetry", "correctness suite"], |
| "selection_rule": "Investigate only a regression reproducible under the pinned workload and controlled environment." |
| }, |
| "workspace": { |
| "isolation": "Clean worktree on fixed benchmark hardware or a controlled runner.", |
| "allowed_actions": ["run profiles", "run repeated benchmarks", "edit the measured bottleneck", "add focused performance tests"], |
| "disallowed_actions": ["edit the benchmark workload", "reduce sample count", "disable correctness tests", "change production systems"] |
| }, |
| "context": { |
| "required_files": ["benchmark specification", "correctness suite configuration", "performance budget", "environment lockfile"], |
| "runtime_sources": ["baseline measurement distribution", "candidate measurements", "profile", "service telemetry sample"] |
| }, |
| "agents": [ |
| { |
| "role": "Reproducer", |
| "responsibility": "Confirm the regression under the frozen workload and environment." |
| }, |
| { |
| "role": "Profiler", |
| "responsibility": "Localize time, allocation, I/O, or contention hotspots before edits." |
| }, |
| { |
| "role": "Implementer", |
| "responsibility": "Apply one evidence-backed change to the measured bottleneck." |
| }, |
| { |
| "role": "Verifier", |
| "responsibility": "Run correctness and compare repeated performance distributions and protected metrics." |
| } |
| ], |
| "verification": { |
| "gates": ["correctness and safety checks pass unchanged", "baseline and candidate share workload and environment fingerprint", "change exceeds noise tolerance", "tail latency memory throughput and cost remain within protected budgets"], |
| "receipts": ["environment fingerprint", "raw baseline and candidate measurements", "profile", "commands", "candidate diff", "accept or reject decision"] |
| }, |
| "state": { |
| "artifacts": ["performance investigation ledger", "profile artifact", "measurement bundle"], |
| "update_rule": "Record workload, environment, samples, profile, hypothesis, diff, protected metrics, and decision for every candidate." |
| }, |
| "budget": { |
| "max_retries": 3, |
| "max_runtime_minutes": 180 |
| }, |
| "escalation": { |
| "conditions": ["regression is production-only", "benchmark environment is unstable", "fix trades correctness for speed", "architectural or capacity decision is required"], |
| "destination": "Performance owner or service architect" |
| }, |
| "exit": { |
| "success": "The target performance budget is restored reproducibly with correctness and protected metrics intact.", |
| "stop_without_success": "The regression cannot be reproduced, measurements are too noisy, budget is exhausted, or an architectural decision is required." |
| } |
| } |
|
|
|
|
