High system load average when using multiple ZED X Cameras on Jetson

Software Python
,
1

I am facing stability issues with running 4x ZED X Stereo cameras at 1080p@30fps on a ZEDBox using GSML2 port, for a long time. The system crashes eventually due to increasing load average. I am running the multi_camera.py script. I have added output of htop before running the script, and after letting it run for ~12 minutes. You can see that the load averages are increasingly high. I suspect it is because of increase in Uninterruptible Sleep processes.

The load average keeps on increasing until the Jetson becomes unresponsive and needs to be manually powered off and on. To prevent this, I added a watchdog timer so that the device restarts before it becomes unresponsive at high load averages.

htop_before_cam_open
htop_before_cam_open1851×943 214 KB

htop_after_cam_open
htop_after_cam_open1843×959 248 KB

Hardware:

  • 1x ZED BOX Orin NX 16GB, 1 TB, No GPS

  • 4x ZED X Stereo Camera No polarizer, 2.2mm focal length

  • 4x GMSL2 Fakra Extension Cable M-F, 10 meter

Software:

  • Jetson Linux v36.3.0

  • Jetpack 6.0

  • Camera Driver: stereolabs-zedbox-duo_1.3.1-LI-MAX96712-all-ZEDBOX-L4T36.3.0_arm64

  • SDK: 5.0.5

2

Hi @omarhassan
To fix these kinds of stability issues, we recommend you upgrade the ZED Box to the latest Jetpack 6.2.

3

Hi @Myzhar, flashing would not be possible for my project at this stage as the ZED box and cameras are already deployed in field. But I will keep that information in mind in future and see if updating to Jetpack 6.2 fixes this problem.