Real-time Testing with Fuego
summary
Fuego runs a new cyclictest+ff script that pairs cyclictest with ftrace and a snapshot hook so tracing captures the worst latency when the recorded maximum updates. Tests run on a MinnowBoard Turbot (Debian 9.5, LTS kernel) with stress-ng ~200 stressors and Jenkins orchestration; measured maximum latency reaches 76.463 ms and the saved kernel snapshot shows the same 76467 value. The modified cyclictest avoids breaktime stopping tests, saves per-update snapshots, and successfully isolates which kernel events cause sporadic delays. ftrace snapshot Jenkins/Fuego integration
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chapters (23)
- 0:00Welcome
- 0:16Agenda
- 1:03Introduction
- 1:58Overview
- 2:57New Script
- 3:43Fuego
- 5:02Hosttohost test
- 6:15Jenkins
- 7:59Cyclic
- 8:33Graphs
- 9:11Kernel Futures
- 10:02Function Tracer
- 10:46Results
- 12:21Approach
- 14:05Breaktime
- 14:54Snapshot
- 16:18Environment
- 16:59Target Board
- 18:35Snapshot log
- 19:06Conclusion
- 20:37Future works
- 20:51Cyclic test
- 21:18Discussion
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