Real-time capabilities

Linux: 

• Not inherently a real-time operating system (RTOS). You can add real-time capabilities like PREEMPT_RT, but these don't match the deterministic behavior of a true RTOS

• Linux’s monolithic design and complex scheduling can introduce latency and jitter, making it less suitable for hard real-time applications.

QNX: 

• Designed as a hard real-time operating system (RTOS) from the ground up. Its microkernel architecture and message-passing IPC ensure deterministic, low-latency responses.

• QNX’s scheduler is optimized for real-time tasks, ensuring that it executes high-priority threads with minimal jitter.