Constant RT_RR_QUANTUM_TICKS 

const RT_RR_QUANTUM_TICKS: u64 = _; // 10u64

RT Round-Robin quantum in ticks.

POSIX specifies a minimum of 100ms for SCHED_RR (Linux default: 100ms). At TIMER_HZ=100: 10 ticks x 10 ms/tick = 100 ms.