Without any changes, you have SCHED_FIFO and SCHED_RR [1] schedulers, but despite the name, they are not really suitable for proper real-time tasks. Closest to

Without any changes, you have SCHED_FIFO and SCHED_RR [1] schedulers, but despite the name, they are not really suitable for proper real-time tasks. Closest to real time on vanilla Linux is SCHED_FIFO task - as long as there is no other task with same or greater priority, your task don't yield, call syscalls or cause page fault, it won't be preempted. When it does yield (one way or the other), there are no guarantees when it's going to be rescheduled, which is severely limiting for considering it as RT. [1] http://man7.org/linux/man-pages/man7/sched.7.html http://man7.org/linux/man-pages/man7/sched.7.html