Energy efficiency

Hello people,

I’m trying to get into the RIOT society. Here are some questions.

I could find that one of the advantages of RIOT OS, compared with FreeRTOS for IoT especially wearable device, is designed for energy efficiency.

However, I can’t find any documents or details about energy efficiency.

I imagine there are some functionalities about energy efficiency on kernel of RIOT, but that’s it.

Could you give me some details or help?

Also, what do you think other advantages of RIOT compared with FreeRTOS.

Please let me know.