Re: [libdc] Multi-card problem

[<st...@in...>]

Tommi Ilmonen sagte:
> Hi.
>
> I am trying to set up multi-camera system that would have 6-8 VGA grayscale
> cameras going at 60fps, using Ubuntu 7.10 and libdc 2.0.1.
>
> I have two 1394b PCI cards, which are connected to the cameras.
>
> With one card, I can run four cameras at 60 fps without any problems.
>
> With two cards, running four cameras (2 cameras per card) does not work any
> more. Some of the cameras run slower than others, and also some of them have
> corrupted image. The image corruption happens so that the camera image
> "shakes" every few seconds. Between those times everything is usually fine -
> except that sometimes a camera or two can just stop sending images.
>
> With one card/four cameras, I use a hub to get more ports, but with two
> cards the cameras are connected directly to the cards.
>
> The problem is not with cards, as either one of them can run 4 cameras at
> the same time without any problems.
>
> Any guesses about what is going on, or how to fix it?
>
bottleneck pci bus?
Falk S.