Python3 high cpu usage and error

[Ranger21]

[2024-05-20 10:56:59] [INFO ] [viseron.components] - Setup of component darknet took 0.2 seconds
[2024-05-20 10:56:59] [INFO ] [viseron.components] - Setting up domain camera for component ffmpeg with identifier camera_1
[2024-05-20 10:56:59] [INFO ] [viseron.components] - Setting up domain object_detector for component darknet with identifier camera_1
[2024-05-20 10:56:59] [INFO ] [viseron.components] - Setting up domain nvr for component nvr with identifier camera_1
[2024-05-20 10:56:59] [INFO ] [viseron.components] - Setup of domain camera for component ffmpeg with identifier camera_1 took 0.2 seconds
[2024-05-20 10:56:59] [WARNING ] [viseron.components.darknet.object_detector.camera_1] - scan_on_motion_only is enabled but no motion detector is configured. Disabling scan_on_motion_only
[2024-05-20 10:56:59] [INFO ] [viseron.components] - Setup of domain object_detector for component darknet with identifier camera_1 took 0.0 seconds
[2024-05-20 10:56:59] [INFO ] [viseron.components.nvr.nvr.camera_1] - Motion detector is disabled
[2024-05-20 10:56:59] [INFO ] [viseron.components.nvr.nvr.camera_1] - NVR for camera varshpc initialized
[2024-05-20 10:56:59] [INFO ] [viseron.components] - Setup of domain nvr for component nvr with identifier camera_1 took 0.0 seconds
[2024-05-20 10:56:59] [INFO ] [viseron.core] - Viseron initialized in 1.0 seconds
[ WARN:0@4.382] global /tmp/opencv/modules/core/src/utils/filesystem.cpp (489) getCacheDirectory Using world accessible cache directory. This may be not secure: /var/tmp/
[2024-05-20 10:57:04] [ERROR ] [viseron.components.nvr.nvr.camera_1] - Failed to retrieve result for object_detector
[2024-05-20 11:02:19] [INFO ] [viseron.core] - Initiating shutdown
[2024-05-20 11:02:19] [INFO ] [viseron.components.nvr.nvr.camera_1] - Stopping NVR thread
[cont-finish.d] executing container finish scripts...
[cont-finish.d] done.
[s6-finish] waiting for services.
[2024-05-20 11:02:22] [INFO ] [viseron.core] - Shutdown complete
[viseron-finish] Viseron exit code 0
s6-svscanctl: fatal: unable to control /var/run/s6/services: supervisor not listening
[s6-finish] sending all processes the TERM signal.
[s6-finish] sending all processes the KILL signal and exiting.
[s6-init] making user provided files available at /var/run/s6/etc...exited 0.
[s6-init] ensuring user provided files have correct perms...exited 0.
[fix-attrs.d] applying ownership & permissions fixes...
[fix-attrs.d] done.
[cont-init.d] executing container initialization scripts...
[cont-init.d] 10-adduser: executing...
usermod: no changes
************************ UID/GID *************************
User uid: 2
User gid: 2
************************** Done **************************
[cont-init.d] 10-adduser: exited 0.
[cont-init.d] 20-gid-video-device: executing...
[cont-init.d] 20-gid-video-device: exited 0.
[cont-init.d] 30-edgetpu-permission: executing...
************** Setting EdgeTPU permissions ***************
Coral Vendor IDs:
"1a6e"
"18d1"
No EdgeTPU USB device was found
No EdgeTPU PCI device was found
************************** Done **************************
[cont-init.d] 30-edgetpu-permission: exited 0.
[cont-init.d] 40-set-env-vars: executing...
****** Checking for hardware acceleration platforms ******
OpenCL is available!
VA-API cannot be used
CUDA cannot be used
*********************** Done *****************************
[cont-init.d] 40-set-env-vars: exited 0.
[cont-init.d] 50-check-if-rpi: executing...
********** Checking if we are running on an RPi **********
Not running on any supported RPi
*********************** Done *****************************
[cont-init.d] 50-check-if-rpi: exited 0.
[cont-init.d] 55-check-if-jetson: executing...
****** Checking if we are running on a Jetson Board ******
Not running on any supported Jetson board
*********************** Done *****************************
[cont-init.d] 55-check-if-jetson: exited 0.
[cont-init.d] 60-ffmpeg-path: executing...
****************** Getting FFmpeg path *******************
FFmpeg path: /home/abc/bin/ffmpeg
*********************** Done *****************************
[cont-init.d] 60-ffmpeg-path: exited 0.
[cont-init.d] 70-gstreamer-path: executing...
***************** Getting GStreamer path *****************
GStreamer path: /usr/bin/gst-launch-1.0
*********************** Done *****************************
[cont-init.d] 70-gstreamer-path: exited 0.
[cont-init.d] done.
[services.d] starting services
[services.d] done.
[2024-05-20 11:02:27] [INFO ] [viseron.core] - -------------------------------------------
[2024-05-20 11:02:27] [INFO ] [viseron.core] - Initializing Viseron
[2024-05-20 11:02:27] [INFO ] [viseron.components] - Setting up component data_stream
[2024-05-20 11:02:27] [INFO ] [viseron.components] - Setup of component data_stream took 0.0 seconds
[2024-05-20 11:02:27] [INFO ] [viseron.components] - Setting up component webserver
[2024-05-20 11:02:27] [INFO ] [viseron.components] - Setup of component webserver took 0.0 seconds
[2024-05-20 11:02:27] [INFO ] [viseron.components] - Setting up component darknet
[2024-05-20 11:02:27] [INFO ] [viseron.components] - Setting up component ffmpeg
[2024-05-20 11:02:27] [INFO ] [viseron.components] - Setting up component nvr
[2024-05-20 11:02:27] [INFO ] [viseron.components] - Setup of component nvr took 0.0 seconds
[2024-05-20 11:02:27] [INFO ] [viseron.components] - Setup of component ffmpeg took 0.0 seconds
[2024-05-20 11:02:28] [INFO ] [viseron.components] - Setup of component darknet took 0.1 seconds
[2024-05-20 11:02:28] [INFO ] [viseron.components] - Setting up domain camera for component ffmpeg with identifier camera_1
[2024-05-20 11:02:28] [INFO ] [viseron.components] - Setting up domain object_detector for component darknet with identifier camera_1
[2024-05-20 11:02:28] [INFO ] [viseron.components] - Setting up domain nvr for component nvr with identifier camera_1
[2024-05-20 11:02:28] [INFO ] [viseron.components] - Setup of domain camera for component ffmpeg with identifier camera_1 took 0.2 seconds
[2024-05-20 11:02:28] [WARNING ] [viseron.components.darknet.object_detector.camera_1] - scan_on_motion_only is enabled but no motion detector is configured. Disabling scan_on_motion_only
[2024-05-20 11:02:28] [INFO ] [viseron.components] - Setup of domain object_detector for component darknet with identifier camera_1 took 0.0 seconds
[2024-05-20 11:02:28] [INFO ] [viseron.components.nvr.nvr.camera_1] - Motion detector is disabled
[2024-05-20 11:02:28] [INFO ] [viseron.components.nvr.nvr.camera_1] - NVR for camera varshpc initialized
[2024-05-20 11:02:28] [INFO ] [viseron.components] - Setup of domain nvr for component nvr with identifier camera_1 took 0.0 seconds
[2024-05-20 11:02:28] [INFO ] [viseron.core] - Viseron initialized in 0.9 seconds
[ WARN:0@4.316] global /tmp/opencv/modules/core/src/utils/filesystem.cpp (489) getCacheDirectory Using world accessible cache directory. This may be not secure: /var/tmp/
[2024-05-20 11:02:33] [ERROR ] [viseron.components.nvr.nvr.camera_1] - Failed to retrieve result for object_detector

What is viseron.components.nvr.nvr.camera_1] - Failed to retrieve result for object_detector and how to resolve it?

[Ranger21]

I've added motion detector, but still have error with object_detector

mog2:
motion_detector:
cameras:
camera_one:
detect_shadows: false
fps: 1
trigger_recorder: false
threshold: 40

[roflcoopter]

When running darknet on the CPU, it can take quite some time for it to initialize the first time.
The "Failed to retrieve result..." error occurs since the initialization is blocking inference.

If you let it sit for a minute or two after restarting Viseron, does it work then?