Comparison between vxworks and Linux Kernel

Comparison between vxworks and Linux kernel-general Linux technology-Linux programming and kernel information. The following is a detailed description. The above is vxWorks.
The following is Linux.

Kernel Structure: microkernel. The kernel only provides basic services, such as task management, memory management, and interrupt processing.
In addition to basic services, the macro kernel also includes file systems and network protocols.

Running Mode: The application runs in the "real mode" without the user mode or kernel mode.
The "protection mode" is adopted. User processes and threads run in user mode, and kernel threads run in kernel mode.

Memory Access and memory protection: the kernel adopts the real storage management mode. All tasks run in the same physical address space. the user program operates the physical address directly and cannot provide memory protection directly, the error cannot be prevented from spreading.
The kernel adopts the virtual storage management mode. The user has an independent address space, and the user process can only access the virtual space of the current process, providing memory protection to prevent the spread of errors.

Execution Unit: task.
Process and thread.

Request kernel service method: function call.
Faster. More secure system calls.

Real-time: hard and real-time.
Soft Real-time.