[aravis] Re: Debugging latency & long pause issues with Blackfly camera...
- From: Emmanuel Pacaud <emmanuel@xxxxxxxxx>
- To: aravis@xxxxxxxxxxxxx
- Date: Mon, 14 Apr 2014 21:53:29 +0200
Hi Patrick,
Le lundi 14 avril 2014 à 09:38 -0400, Patrick Doyle a écrit :
> This shows a rather long pause at the beginning (137 seconds, which
> correlates with the wall clock time I measured) getting the pipeline
> up and running, followed by 8 frames whose timestamps differ by 34e6
> nanoseconds (34 ms, which is sort of correct for 30 frames/sec),
> followed by a 19 second pause (again, correlates well with the wall
> clock), followed by more frames.
>
> I'm not asking that anybody solve this (although, if you've seen this
> sort of thing with the Blackfly, or other cameras and can tell me what
> to fix, you would have my eternal gratitude), but if anybody has some
> suggestions as to what I might look at, or what tools I might use, to
> diagnose these pauses, I would be grateful.
I have a blackfly camera with which I face some troubles similar to
yours. I think it's due to the fact the register giving the Time Tick
Frequency returns a wrong value. And this value is used to compute the
image buffer timestamps.
I'll try to fix this issue by tomorrow.
Cheers,
Emmanuel.
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