English: Timing diagram showing an example of Earliest Deadline First real-time process scheduling for three periodic processes: P1, with an execution time of 1 and a period of 8; P2, with an execution time of 2 and a period of 5; and P3, with an execution time of 4 and a period of 10. The columns represent time slices, with time increasing to the right. The alternating blue and white shading indicates each process's periods, with deadlines at the color changes.