Pitfall Log: Fixing Modbus Multithread Deadlocks
A field note on shutdown deadlocks and timeout misjudgment in a Qt multithreaded Modbus workflow, with practical fixes.
Qt
Linux Release CI/CD Postmortem: "It Runs" Is an Appearance, Not Evidence
How the first automated Linux release pipeline for Modbus-Tools (Qt 6 / C++) converged over multiple CI rounds. Six of the seven cross-platform failure classes share one pattern: “it ran elsewhere” is merely a localized surface phenomenon, not proof of correctness. From GNU ld member stripping and epoll/Winsock event ordering, through undefined behavior from two Qt socket engines fighting over one fd, to ELF RUNPATH contract splitting — building a deterministic release pipeline.
TrafficMonitor CPU Optimization Postmortem: An Engineering Simplification from 4% to 0.6%
A postmortem on CPU optimization under a high-frequency polling workload: by shrinking the UI logging path, removing high-frequency state machines, and fixing the wait model, CPU usage dropped from 3.6%~4.2% to 0.1%~0.6%.
Modbus-Tools Deep Dive: A Practical Modbus Workflow for Daily Debugging
A practical guide to a lightweight Modbus tool for embedded development and field commissioning: fast frame building, log viewing, Frame Analyzer with scaling/register annotations/JSON-CSV persistence, Link to Analyzer live linkage, and Force Parse.