<b>Investigative Study on Scheduling Procedures for Real Time Operating System</b> Scheduling procedures are a backbone of any operating system. In this paper I analyze and conclude that the types of different scheduling procedures used in real time. As I know scheduling procedures are basically divided into two main streams first is the uni processor and another one is multiprocessor. Static Rate Monotonic SRM , Static Deadline monotonic SDM , Earlier deadline first EDF , Least laxity first LLF 770-774 Issue-1 Volume-2 Pallavi Ganeshpurkar