Pricing
00
In productionProbeginnerReal-time safety

The AI allocates in the control callback

Remove the per-callback allocation the LLM put in the hot path.

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 100 Hz control loop shows p99 latency spikes and misses its deadline under 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. 01control callback→
  2. 02allocation→
  3. 03deadlineOUT
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
  • No per-cycle allocation
  • Deadline met
  • Hidden regression behavior
  • Root cause explanation