FreeRTOS - Task Priorities
A task with priority 5 is starved and never runs, even though lower priority tasks run fine. What is a possible error?
A task with priority 5 is starved and never runs, even though lower priority tasks run fine. What is a possible error?
medium📝 Debug Q7 of 15
Step-by-Step Solution
Solution:
Step 1: Analyze starvation cause
Starvation happens if higher priority tasks always run, blocking lower priority ones.Step 2: Apply to given priority
Task with priority 5 is starved likely because a task with priority >5 is always ready.Final Answer:
A higher priority task is always ready and preempts it -> Option AQuick Check:
Starvation = Higher priority task always ready [OK]
Quick Trick: Starvation caused by always ready higher priority tasks [OK]
Common Mistakes:
- Assuming priority 5 is too low without checking others
- Ignoring task suspension state
- Forgetting to start the scheduler
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