Embedded Linux Logging: Collection Features

In embedded systems, logging is a balance between diagnostic needs and strict resource constraints.

🛠 1. Hardware Constraints

• Limited RAM: Memory is precious.
• Flash Memory (eMMC/SD): Limited write cycles.
• No UPS: Power loss risk.

💾 2. Storage Strategies

Cyclic Buffer in RAM

Safest for hardware. Uses /dev/log.

Persistent Storage on Flash

Good for post-mortem, bad for Flash life.

⚙️ 3. BusyBox Syslog

bash syslogd -n -C128 Use logread to see logs.