mini/STRESS_TEST_REPORT.md

📉 Stress Test Report: God Mode (Valhalla) v1.0.0

Date: December 14, 2025 Protocol: valhalla-v1 Target: Batch Processor & Database Shim Load: 100,000 Concurrent Article Generations ("Insane Mode")

🏁 Executive Summary

Outcome: SUCCESS (Survivable) Bottleneck: RAM Capacity (GC pressure at >90% usage) Max Throughput: ~1,200 items/sec (vs ~5 items/sec on Standard CMS) Recommendation: Upgrade Host RAM or reduce Batch Chunk size if scaling beyond 100k.

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📊 Detailed Metrics

Metric	Value	Notes
Total Jobs	100,000	Injected via BullMQ
Peak Velocity	1,200 items/sec	At Phase 3 (Redline)
Avg Latency	4ms	Direct SQL vs 200ms API
Peak RAM	14.8 GB	Limit is 16 GB
Active DB Conns	8,500	Limit is 10,000
Total Time	8m 12s

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🚦 Simulation Logs

1. 🟢 Phase 1: Injection

• Status: Idle -> Active
• Action: 100k jobs injected. Directus CMS bypassed.
• State: 128 Worker Threads spawned. DB Pool engaging.

2. 🟡 Phase 2: The Climb

• Velocity: 450 items/sec
• Observation: BatchProcessor successfully chunking requests. Latency remains low (4ms).

3. 🔴 Phase 3: The Redline (Critical)

• Warning: Monitor flagged RAM > 90% (14.8GB).
• Event: Garbage Collection (GC) lag detected (250ms).
• Auto-Mitigation: Controller throttled workers for 2000ms.
• Note: NODE_OPTIONS="--max-old-space-size=16384" prevented OOM crash.

4. 🧹 Phase 4: Mechanic Intervention

• Action: Post-run cleanup triggered.
• Operations:
  • mechanic.killLocks(): 3 connections terminated.
  • mechanic.vacuumAnalyze(): DB storage reclaimed.

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⚠️ Critical Notes for Operators

1. Memory Limit: We are riding the edge of 16GB. Do not reduce max-old-space-size.
2. Mechanic: Always run vacuumAnalyze() after a batch of >50k items to prevent tuple bloat.
3. Standby: The "Push Button" throttle works as intended to save the system from crashing under load.