Watchdog Overview

To ensure system stability and improve system performance, the AAOS framework team added the Watchdog module in Android 10 as part of the core system services. The Watchdog module consists of a native daemon and a CarService component. The native daemon interacts with the native services and the CarService component interacts with the Android applications and Java services.

Note: The Watchdog module described in this document is specific to the Android Automotive OS (AAOS) platform and differs from the Watchdog module in core Android.

• Monitoring Flash Memory Usage. Monitors the flash memory usage by all applications and services. Detects and acts on flash memory overuse by any application or service.
• Collecting Performance Data. Collects I/O performance since early system bootup. Reports the collected performance data in the bugreport.
• Monitoring System Health. Monitors the health of the core services and vehicle hardware abstraction layer (VHAL) service.