Le jeu. 16 nov. 2017 à 18:06, Ian McCoy <immccoy78@xxxxxxxxx> a écrit :
I believe there is a significant performance issue with the way aravissrc is handling the processing of Gigabit packets when there is more than one camera streaming images simultaneously. I think this is preventing the cameras/network from operating well below their maximum capability. There have been a few posts in the past that mentioned this and it always dismissed as as bandwidth issue. But, I don't believe that's the case.
As a comparison, the second application uses two Blackfly Gigabit camera from Point Grey. The cameras are configured as follows: 1920x1200, Grey8 and at 5Hz. This application is operating well within the bandwidth requirements for gigabit network/camera system and I'm seeing ~70+ packet resends errors per second spread between the two cameras. Most packet resends are requesting more than one Ethernet packet which I think is causing significant performance issue when how the video is encoded and displayed locally. I used wireshark to get the capture and confirm the packet resends.
In both scenarios, the same processor is being used. Also, both applications the cameras are being simultaneously externally trigger.