Sruthi Pakanati thinks this is interesting: Linux implements the two real-time scheduling classes required by POSIX.1b: first-come, first-served (FCFS) and round-robin (Section 6.3.1 and Section 6.3.4, respectively). From Chapter 18 The Linux System from Operating System Concepts, 9th Edition by Greg Gagne, Peter B. Galvin, Abraham Silberschatz Publisher: John Wiley & Sons Released: December 2012 Note Take Note Share this highlight http://www.safaribooksonline.com/a/operating-system-concepts/11561/ Twitter Facebook Google Plus Email Get Instant Access Now Start a Free Trial Have an account? Sign in. Minimise Unlock the rest of Operating System Concepts, 9th Edition and 30,000 other books and videos By clicking this box, you confirm that you have read and agree to the terms and conditions of our Membership Agreement, and you understand that when your trial period ends, you will be required to provide billing information if you wish to continue using the service. Unlock the rest of this book Start a Free 10-Day Trial loading Learn about Safari for Business Have an account? Sign in.