Difference Between Hard and Soft Real Time System in Tabular Form
- The Major Difference Between Hard and Soft Real Time System is that Real Time Operating Systems specify by having time as a key parameter. Real time operating system has well defined fixed time constraints. Processing must be done within defined constraints or the system will fail.
- Types of Real Time Operating System
- Hard real-time system
- Soft real time system
- An example of real-time system is e-Cos.
|Hard real time||Soft real time|
|Hard response time is required.||Soft response time is required.|
|Data integrity is short term.||Data integrity is long term.|
|Size of the data file is small or medium.||Size of the data file is large.|
|Peak load performance is predictable.||Peak load performance is degraded.|
|Hard real-time systems have little laxity and generally provide full deadline compliance.||Soft real-time systems are more flexible. They have greater laxity and can tolerate certain amounts of deadline misses.|
|Safety critical systems are typically a hard real time system.||Linux and many OS provide a soft real time system.|
Hard Real time system
- This system guarantees that critical tasks complete on time.
- Many of these are found in industrial process control, avionics, and military and similar application areas.
- This goal says that all delays in the system must be restricted.
- These systems must provide absolute guarantees that a certain action will occur by a certain time.
- Chemical and nuclear plant control
- Autopilot System In Plane
Soft Real-Time System
- In this type of system, missing an occasional deadline, while not desirable, is acceptable and does not cause any permanent damage.
- Digital audio, digital telephone, and multimedia systems fall into this category.
- Mobile Communication
- Music Playing Robots
- Weather Station