Resource management

Linux: 

• Kernel modules running in kernel space handle resource management (e.g., device drivers, file systems).

• While kernel modules are powerful, they introduce risks; a buggy or malicious module can compromise system stability or security.

QNX:

• Uses user resource managers (URMs) to manage system resources. These are separate user-space processes that handle specific resources (e.g., memory, files, networking).

• URMs communicate with the microkernel and other processes via message passing, ensuring isolation and fault tolerance.

• If a resource manager crashes, it can often be restarted without affecting the rest of the system.