1# Heap Task Tracking Example
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3## Overview
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5The example creates a task which allocates random amount of memory in each iteration and demonstrates use of internal API to get heap info on per task basis running in a system.
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7Heap task tracking feature has dependency on some of the internal heap debugging features (e.g. heap poisoning) which allows to store task control block in metadata of each heap block.
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9This adds small memory overhead on per heap block and hence this feature should be used for debugging purpose only.
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11### Configure the project
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13To change the `Heap Corruption Detection level`, open the project configuration menu (`idf.py menuconfig`).
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15Navigate to `Component config -> Heap memory debugging` menu. In `Heap corruption detection` menu select either "Light Impact" or "Comprehensive".
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17**Note:** Enabling “Comprehensive” detection has a substantial runtime performance impact.
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19### Build and Flash
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21Run `idf.py -p PORT flash monitor` to build and flash the project..
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23(To exit the serial monitor, type ``Ctrl-]``.)
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25See the [Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/index.html) for full steps to configure and use ESP-IDF to build projects.
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27## Example Output
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29```
30Task: Pre-Scheduler allocs -> CAP_8BIT: 5360 CAP_32BIT: 0
31Task: esp_timer -> CAP_8BIT: 1724 CAP_32BIT: 0
32Task: ipc0 -> CAP_8BIT: 8316 CAP_32BIT: 0
33Task: main -> CAP_8BIT: 3480 CAP_32BIT: 0
34Task: ipc1 -> CAP_8BIT: 12 CAP_32BIT: 0
35Task: example_task -> CAP_8BIT: 696 CAP_32BIT: 0
36```
37