1 Answer. Linux is a general-purpose OS (GPOS); its application to embedded systems is usually motivated by the availability of device support, file-systems, network connectivity, and UI support. … Critically Linux is not real-time capable.

Is Unix a real time operating system?

Microsoft Windows, MacOS, Unix, and Linux are not “real-time.” They are often completely unresponsive for seconds at a time. … Real-time operating systems are operating systems that will always respond to an event in a guaranteed amount of time, not in seconds or milliseconds, but in microseconds or nanoseconds.

Why Linux is not real time?

Normal Linux kernel vs RTOS

Normal Linux Kernel is a preemptive kernel but not real time, of course. In most multithreading environments (also called multitasking ), a preemptive kernel allows the thread that has higher priority to receive longer time on the processor.