Display latency when more than one IMX623 camera

Autonomous Vehicles DRIVE AGX Orin DRIVE AGX Orin General
1

Please provide the following info (tick the boxes after creating this topic):
Software Version
DRIVE OS 6.0.10.0
DRIVE OS 6.0.8.1
DRIVE OS 6.0.6
DRIVE OS 6.0.5
DRIVE OS 6.0.4 (rev. 1)
DRIVE OS 6.0.4 SDK
other

Target Operating System
Linux
QNX
other

Hardware Platform
DRIVE AGX Orin Developer Kit (940-63710-0010-300)
DRIVE AGX Orin Developer Kit (940-63710-0010-200)
DRIVE AGX Orin Developer Kit (940-63710-0010-100)
DRIVE AGX Orin Developer Kit (940-63710-0010-D00)
DRIVE AGX Orin Developer Kit (940-63710-0010-C00)
DRIVE AGX Orin Developer Kit (not sure its number)
other

SDK Manager Version
2.1.0
other

Host Machine Version
native Ubuntu Linux 20.04 Host installed with SDK Manager
native Ubuntu Linux 20.04 Host installed with DRIVE OS Docker Containers
native Ubuntu Linux 18.04 Host installed with DRIVE OS Docker Containers
other

Issue Description
When more than one IMX623 camera is started with nvsipl_camera and display output enabled, there is some very obvious latency on the display. No dropped frames, but frame discontinuity counter is big. If each camera is started alone, NO display latency, frame discontinuity counter still incrementing. Cameras are connected in the same port group, tried more groups and same results.

Should the VIC engine be on? Because I have tried tegrastats while the nvsipl_camera was running with 2 cameras, and VIC was always off.

2

Dear @silvia.truica1 ,
Could you share the used model and command? You mean FPS goes down?

4

It’s a custom camera, ./nvsipl_camera -c “IMX623_RGGB_CPHY_x4_SAME_PORT” -m “0x0000 0x0000 0x0011 0x0000” -d 1 -v 4.
Tried also all combinations of enable raw or disable ISP outputs.
FPS does not go down, it’s stable ~ 30fps in any combinations according to logs; it seems that just the display output has an issue when it has to display more than one camera => that’s why I asked also about VIC