1. Real Time System T S PRADEEP KUMAR VIT University

6. Example

8. Hard RTS Vs Soft RTS User Assisted Autonomous Error Detection Large Small Size of Data Non Critical Critical Safety Computer Environment Controlled by Degraded Predictable Peak Load Performance Soft- required Hard- Required Response Time Soft RTS Hard RTS Characteristics

9. Real Time Spectrum

21. RMS Example

22. RMS Example 2 Task set: T i = (c i , di, p i ) T1 = (2,6,6) and T2 = (4,10,10) Schedulability check: 2/6 + 4/10 = 0.33 + 0.40 = 0.73 ≤ 2(√2 -1) = 0. 82 T 1 1 T 1 2 0 2 6 8 10 T 2 1 T 2 2 0 2 6 10 T1 T2 Hole Background scheduling: basic idea -- Scheduling aperiodic tasks in holes like this Schedule continues

24. EDF Example