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In productionProintermediateReal-time safety

The AI's loop uses sleep, not a timer

Replace the sleep loop with a ROS timer.

Pairs with Real-time and safety: where AI can't help in Use AI efficiently with ROS 2. Read the concept first, then diagnose it here.

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Operator report

The loop rate drifts and jitters, especially under CPU load.

Ubuntu 24.04, ROS 2 Jazzy, rclpy/rclcpp, an LLM coding assistant + MCP

01

System boundary

Trace only the relevant path.

3 nodes
  1. 01loop→
  2. 02ROS timer→
  3. 03stable rateOUT
02

How this lab works

You diagnose it. No command list.

Open the repair workspace and gather your own evidence in a real terminal. No diagnostic commands are handed to you - finding the fault is the exercise. Stuck? Progressive hints unlock inside the workspace.

03

Verification

Pass more than the visible symptom.

4 checks
  • Uses a ROS timer
  • Rate is stable
  • Hidden regression behavior
  • Root cause explanation