Ros2_pulse: topic rates on a Grafana dashboard, now counting rclpy nodes and loaned messages
Some updates on ros2_pulse since the first post ( Ros2_pulse: per-topic rates and node liveness, including intra-process, on stock binaries ), the LD_PRELOAD probe that counts per-topic rates and node liveness from the tracetools hooks instead of subscribing.
Executive Summary
Some updates on ros2_pulse since the first post ( Ros2_pulse: per-topic rates and node liveness, including intra-process, on stock binaries ), the LD_PRELOAD probe that counts per-topic rates and node liveness from the tracetools hooks instead of subscribing. Python nodes are counted on both sides now. Before, a Python subscriber’s deliveries never showed up, because rclpy isn’t instrumented.
Distribution Engineering & Packaging Ecosystem Audit
From a Linux distribution, deployment reliability, and systems engineering perspective: - **Dependency Determinism:** Declarative and isolated package trees guarantee reproducible execution across production hosts. - **Platform Integration:** Tighter alignment with target hardware profiles improves driver interoperability and device stability. - **Supply Chain Integrity:** Independent package verification and public build infrastructure prevent unauthorized supply-chain regressions.
Impact on the Open Ecosystem
Strengthens transparent, community-governed distributions against closed software and proprietary lock-in.