ztimer_ondemand_benchmark

This application measures latencies introduced by ztimer_acquire() and ztimer_release(). Since it is directly interacting with the underlying peripheral, you need at least two periph_timer instances if you're benchmarking a ztimer clock based on ztimer_periph_timer.

The application tries to select a unused timer automatically. If this selection process fails, users may specify device and frequency in this test's Makefile.