[Solved] Given the following code snippet, what will be the output stored in statsBuffer? char statsBuffer[100]; vTaskGetRunTimeStats(statsBuffer); printf("%s", statsBuffer);... | FreeRTOS

FreeRTOS - Debugging and Monitoring

Given the following code snippet, what will be the output stored in statsBuffer?

char statsBuffer[100];
vTaskGetRunTimeStats(statsBuffer);
printf("%s", statsBuffer);

Assuming two tasks "TaskA" and "TaskB" run and TaskA used 70% CPU, TaskB used 30%.

ATaskA 7 TaskB 3

BTaskA 70% TaskB 30%

CTaskA 7000 TaskB 3000

DTaskA 700 TaskB 300

Step-by-Step Solution

Solution:

Step 1: Understand output format of vTaskGetRunTimeStats()
The function outputs CPU usage as run time counter ticks, not percentages. If TaskA used 70% CPU, it might show 7000 ticks and TaskB 3000 ticks (assuming 10000 total ticks).
Step 2: Match options with expected output
TaskA 7000 TaskB 3000 shows usage in ticks (7000 and 3000), matching expected output. Options B, C, and D show percentages or smaller numbers, which are not the direct output format.
Final Answer:
TaskA 7000 TaskB 3000 -> Option C
Quick Check:
Output shows ticks, not percentages [OK]

Quick Trick: Output shows ticks, not percent values [OK]

Common Mistakes:

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Given the following code snippet, what will be the output stored in statsBuffer?