NRF52832 FREERTOS power Power consumption

[h.wen]

application :   examples\ble_peripheral\ble_app_hrs_freertos

I am using nRF52832 with sdk 17.0.2,+ freertos.

I need to implement low power with LOG_ENABLED,but the Power consumption seems a little bit high

pls  help me and give me some solutions,Hope  the power consumption  is less than 3ua

1. the  Power consumption is 2.1uA  According to the following configuration：

#define configUSE_TICKLESS_IDLE 1

#define NRF_LOG_ENABLED 0

2.  the  Power consumption is 12.5uA According to the following configuration：

#define configUSE_TICKLESS_IDLE 1

#define NRF_LOG_ENABLED 1

void vApplicationIdleHook( void )
{
	idle_state_handle();
}


void nrf_pwr_mgmt_run(void)
{
    PWR_MGMT_FPU_SLEEP_PREPARE();
    PWR_MGMT_SLEEP_LOCK_ACQUIRE();
    PWR_MGMT_CPU_USAGE_MONITOR_SECTION_ENTER();
    PWR_MGMT_DEBUG_PIN_SET();

    // Wait for an event.
#ifdef SOFTDEVICE_PRESENT
    if (nrf_sdh_is_enabled())
    {
        ret_code_t ret_code = sd_app_evt_wait();
        ASSERT((ret_code == NRF_SUCCESS) || (ret_code == NRF_ERROR_SOFTDEVICE_NOT_ENABLED));
        UNUSED_VARIABLE(ret_code);
    }
    else
#endif // SOFTDEVICE_PRESENT
    {
        // Wait for an event.
        __WFE();
        // Clear the internal event register.
        __SEV();
        __WFE();
    }

    PWR_MGMT_DEBUG_PIN_CLEAR();
    PWR_MGMT_CPU_USAGE_MONITOR_SECTION_EXIT();
    PWR_MGMT_SLEEP_LOCK_RELEASE();
}

[h.wen]

static void idle_state_handle(void)
{
    if (NRF_LOG_PROCESS() == false)
    {
        nrf_pwr_mgmt_run();
    }
}