# Resource Limit Tests

### NFT-RES-LIM-01: Jetson Memory Budget

**Summary**: Validate that runtime memory stays below the 8 GB shared LPDDR5 limit.

**Traces to**: AC-4.2, Restrictions Onboard Hardware

**Preconditions**:
- Jetson Orin Nano Super in production power/thermal mode.
- BASALT + wrapper, cache index, FAISS CPU index, and FDR enabled.

**Monitoring**:
- CPU/GPU shared memory, process RSS, CUDA allocations, FAISS index memory.

**Duration**: Minimum 60 minutes steady-state replay plus relocalization triggers.

**Pass criteria**: Peak memory <8 GB shared; no OOM kill; no silent descriptor/index eviction.

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### NFT-RES-LIM-02: Thermal And Power Envelope

**Summary**: Validate sustained 25 W operation without thermal throttling across the environmental envelope.

**Traces to**: AC-NEW-5

**Preconditions**:
- Jetson cooling solution installed.
- Hot-soak chamber or production thermal test setup at +50 °C.

**Monitoring**:
- Power mode, temperature sensors, throttle flags, CPU/GPU clocks, per-frame latency.

**Duration**: 8 hours at sustained representative workload.

**Pass criteria**: No thermal throttle event; p95 latency remains <400 ms; QGC receives thermal warning if any threshold is approached.

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### NFT-RES-LIM-03: Satellite Cache Storage Budget

**Summary**: Validate persistent satellite cache footprint for up to 400 km² operational area.

**Traces to**: AC-8.3, Restrictions Satellite Imagery

**Monitoring**:
- Cache imagery, overviews, manifests, sidecars, FAISS descriptors/indexes.

**Duration**: Full cache build/load test.

**Pass criteria**: Persistent cache is <=10 GB unless the implementation explicitly defines and gets approval for a separate descriptor/index budget.

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### NFT-RES-LIM-04: Flight Data Recorder Rollover

**Summary**: Validate FDR storage cap and rollover behavior under an 8-hour synthetic mission.

**Traces to**: AC-NEW-3, AC-8.5

**Preconditions**:
- Synthetic 8-hour load with 3 fps navigation frames, full-rate IMU, emitted `GPS_INPUT`, health telemetry, tile writes, and failure thumbnails.

**Monitoring**:
- FDR segment sizes, rollover events, retained payload classes.

**Duration**: 8 hours.

**Pass criteria**: FDR remains <=64 GB per flight; rollover is logged; no raw nav/AI frames are retained; no payload class is silently dropped.

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### NFT-RES-LIM-05: Cold Start Resource Spike

**Summary**: Validate that CUDA/TensorRT/ONNX/FAISS initialization does not violate boot or memory budgets.

**Traces to**: AC-NEW-1, AC-4.2

**Monitoring**:
- Initialization time, peak memory, engine/index load time.

**Duration**: 50 cold-start trials.

**Pass criteria**: First valid `GPS_INPUT` <30 s p95; peak memory <8 GB; no first-run engine build occurs at runtime.

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### NFT-RES-LIM-INFRA: Jetson Hardware Prerequisite Smoke

**Summary**: Validate that local replay reports Jetson-only resource gates as blocked unless target hardware is explicitly enabled.

**Traces to**: AZ-239 AC-1, AZ-239 AC-2, AZ-239 AC-4, AZ-233 Reliability NFR

**Monitoring**:
- Replay report status, blocked reason, and run-scoped artifact path.

**Duration**: One Docker replay smoke run.

**Pass criteria**: On non-Jetson local runners, the scenario reports `blocked` with `Jetson prerequisite blocked: set GPSD_ENABLE_JETSON=1 on target hardware`; on Jetson release-gate runners, it must collect the metrics required by `NFT-RES-LIM-01`, `NFT-RES-LIM-02`, and `NFT-RES-LIM-05`.