Tasks module
Shows system tasks info.
- Core 0: which task is currently running on core 0
-
Core 1: which task is currently running on core 1
-
Per task:
- name: task name
- Summary
- state: Ready (🧍♂️), Running (🏃♂️), Blocked (🚧), Suspended (⏸️), deleted (🗑️), unknown (❓)
- cpu: percentage of CPU time (per core) used
- prio: task priority
- stack: stack left
- runtime: amount of cpu cycles consumed
- core: allocated core, not necessarily used core (see above)
Default stack sizes
| Task name (runtime) | Kconfig option | Default stack size (words → bytes) | Notes |
|---|---|---|---|
| AppEffectTask | (psramFound()?6:4) * 1024 | ||
| AppDriverTask | (psramFound()?4:3) * 1024 | ||
| wifi (Wi-Fi driver) | CONFIG_ESP_WIFI_TASK_STACK_SIZE |
3072 words → 12288 bytes → 12 KB | Handles Wi-Fi MAC/driver. Needs extra headroom. |
| tiT (TCP/IP / lwIP task) | CONFIG_TCPIP_TASK_STACK_SIZE |
3072 words → 12288 bytes → 12 KB | All socket callbacks, DHCP, etc. |
| event (ESP event loop) | CONFIG_ESP_SYSTEM_EVENT_TASK_STACK_SIZE (older) / CONFIG_ESP_EVENT_LOOP_TASK_STACK_SIZE (newer) |
2048 words → 8192 bytes → 8 KB | Dispatches Wi-Fi/IP/BLE events. |
| esp_timer (high-res timers) | CONFIG_ESP_TIMER_TASK_STACK_SIZE |
1024 words → 4096 bytes → 4 KB | Runs high-resolution callback handlers (timers/timeouts). |
| ipc0 / ipc1 (cross-core IPC) | CONFIG_ESP_IPC_TASK_STACK_SIZE |
1024 words → 4096 bytes → 4 KB | Used for cross-CPU calls / IPC. |
main (app_main) |
CONFIG_ESP_MAIN_TASK_STACK_SIZE |
3584 words → 14336 bytes → 14 KB | Your entry point task. |
| Idle tasks | (fixed) | ~768 bytes each (per CPU) | System FreeRTOS idle tasks. |
| Timer service task | CONFIG_FREERTOS_TIMER_TASK_STACK_DEPTH |
2048 words → 8192 bytes → 8 KB | FreeRTOS software timers (xTimer). |
| Arduino loop task (if using Arduino core) | CONFIG_ARDUINO_LOOP_STACK_SIZE |
8192 bytes → 8 KB | Present when Arduino core is used as a component. |
| btc_task (classic BT) | CONFIG_BT_BTC_TASK_STACK_SIZE |
3072 words → 12288 bytes → 12 KB | Only if Bluetooth Classic enabled. |
| btu_task (BT controller) | CONFIG_BT_BTU_TASK_STACK_SIZE |
4096 words → 16384 bytes → 16 KB | Heaviest Bluetooth controller task (if BT enabled). |
| BLE host task | CONFIG_BT_BLE_HOST_TASK_STACK_SIZE |
3072 words → 12288 bytes → 12 KB | Only if BLE enabled. |