High (~10%) GPU usage to display a camera on the Jetson AGX Orin

Robotics & Edge Computing Jetson Systems Jetson AGX Orin
1

Hi,

I’m developing a ROS node with Qt to display a video stream from a camera. I noticed that the GPU usage (~10%) is very high for such a simple task.

To find if the problem was with my application, I used ffplay to display the camera and the GPU usage was similar.

Do you have any idea why the usage is so high?

I’m using an NVIDIA Jetson AGX Orin with Jetpack JetPack 5.1.1. I have measured the GPU usage with jetson_stats.

Thank you!

3

Hi,
This looks expected. It is similar to using nv3dsink or nveglglessink in gstreamer. It takes certain GPU usage. If you would like to eliminate the loading, please use nvdrmvideosink in gstreamer or use NvDrmRenderer in jetson_multimedia_api.

4

Hi,

Thank you for your answer.

For interested people, I was able to reduce the GPU usage of my Qt application that shows 2 video stream by one global repaint instead of 2 local repaint.