power-performance

To optimize Zephyr power consumption, enable CONFIG_PM and CONFIG_PM_DEVICE, implement residency hooks, and relocate critical functions to RAM. This balances battery life and low latency by reducing idle power draw while preserving responsiveness for hot paths.

Zephyr residency hooks allow the system to enter low power states during idle periods. By configuring system power states, battery-powered sensors can achieve long idle times and energy efficiency while waking quickly for latency-sensitive tasks.

Yes, you can relocate critical code and data to RAM or ITCM in Zephyr to reduce execution latency. Adjusting linker scripts allows you to move hot paths into faster memory, which is verified through profiling to ensure energy savings.

The best way to profile latency and energy efficiency in Zephyr is to run profiling after configuring power states and relocating critical functions. This verifies that your compile-time options and linker script adjustments achieve the desired balance.

Yes, this approach is designed for battery-powered industrial sensors requiring extended runtime. By leveraging system power states and memory-conscious stack and heap considerations, devices maintain low latency while maximizing battery life.

Adjust linker scripts for memory optimization in Zephyr when you need to relocate critical functions to RAM or ITCM for faster execution. This is typically done after identifying hot paths to ensure latency and energy targets are met.