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RTOS Vs GPOS and Need for RTOS

written 5.9 years ago by gayathris • 140

embedded system and rtos

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written 5.9 years ago by gayathris • 140

RTOS Vs GPOS:

RTOS (Real Time OS)	GPOS (General purpose OS)
In RTOS tasks are scheduled based on priority.	Tasks can be adjusted dynamically for optimized throughput.
Kernel is preemptive.	Kernel is non-preemptive.
Priority inversion is a major issue.	Priority inversion usually remains unnoticed.
Predictable behaviour.	Unpredictable behaviour.
works under worst case assumptions.	Optimizes for the average case.
less memory.	large memory.

What is RTOS?

• Multitasking OS for application that need meeting of time deadlines and functioning in realtime constraints.

Features:

• Timelines $\to$ time management
• Predictability
• Meeting deadlines
• Less memory management
• Minimum interrupt latency

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