Thermal Monitor for ACRN

To monitor the thermal information of CPUs, ACRN provide a monitor tool to implement this feature. The main daemon thread is resident in Service VM and collect the thermal information of all CPUs, including which are allocated to Standard VM and RTVM.

Thermal Monitor source code

When ACRN Hypervisor source code is downloaded, source code of Thermal Monitor is included. The method to get ACRN source code refer to Compile ACRN for Different Platforms. The path of Thermal Monitor source code in ACRN: misc/services/thermal_monitor

Preparation before Build

Before building and running the thermal monitor, following steps need to be completed:

1. Install ACRN on target platform, and configure ivshmem between Service VM and RTVM (if RTVM is configured). The method to configure ivshmem on ACRN refer to ACRN documentation.

2. Install python3-dev on Service VM and RTVM (if RTVM is configured).

3. Install msr-tools on Service VM and RTVM (if RTVM is configured).

Build and run Thermal Monitor

1. In thermal_monitor directory, execute make to build the application for Service VM and RTVM. After building, there are two applications in build folder: ther_monitor_sos is for Service VM and ther_monitor_rtvm is for RTVM.

2. ther_monitor_sos could be executed in Service VM directly and it would collect the thermal information for Service VM and Standard VM.

   

3. ther_monitor_rtvm should be copied into RTVM and executed. It would collect the thermal information for RTVM and send it to Service VM.