Debugging Embedded Linux
Talkat Open Source Summit Europe 2022 · on Tuesday, 2022-09-13· at 12:00· Liffey B Part 1 (Level 1), Convention Centre Dublin, Spencer Dock, N Wall Quay, North Wall Dublin 1, D01 T1·
summary
Development spends most time debugging, so the proposed approach focuses on concrete experiments: define the problem, list plausible causes, design a single test to verify one cause, run it and commit results. Tools covered include printf debugging (and the risk it masks race conditions), kernel special files under proc/sys, GDB uses, strace, perf and Wireshark/tcpdump for networking. Example: a rain sensor that fails on a slope is fixed by tilting it, not changing radio or power.
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chapters (14)
- 0:00Introduction to Debugging
- 1:09Common Debugging Pitfalls
- 2:38Avoiding Slip Solutions
- 5:38A Structured Methodology
- 7:24Debugging a Weather Station
- 11:57Methodology Recap
- 14:58Printf and Logging
- 18:09Log Levels and Systems
- 19:40Kernel Debugging Tools
- 21:04Strace and Perf Tools
- 23:31Network Debugging
- 25:36Common Network Issues
- 27:28Final Debugging Summary
- 30:10Q&A Session
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