[AG-TECH] VIC menu slowness under linux

Piers O'Hanlon p.ohanlon at cs.ucl.ac.uk
Thu Dec 22 12:11:16 CST 2005


Hi Jim,

Is your machine heavily loaded when you're having these problems, or
do you only see the problem when you turn on encryption?

Piers.

On 12/22/05, Jim Miller <millerjw at psc.edu> wrote:
> Yes, I am talking on the capture machine itself.  The machine is running
> the servicemanager with 3 video feeds (hauppauge cards) and an audio
> RAT.  The RAT is very responsive, the VIC is not.  I have attempted to
> adjust framerates from 20-30fps with no change in response time.  VIC is
> just slow.  I am running a 2.4 kernel, but I noticed this same thing in
> older Linux and VIC versions as well dating back to AG 1 days.  It has
> become an issue lately due to meetings that we attend being encrypted.
> It takes forever to manipulate through 3 VIC windows to set up
> encryption for every stream.
> Thanks,
> Jim
>
>
> Christoph Willing wrote:
> >
> > On 22/12/2005, at 4:39 AM, Jim Miller wrote:
> >
> >> I am having an issue with my capture node with VIC being painfully
> >> slow to respond to pretty much anything.  If I try and manipulate  the
> >> menu, I can't do anything except click, wait 2 min, click again.
> >> Is there a known fix?
> >
> >
> > Jim,
> >
> > Is this a new phenomenon?
> >
> > When you "manipulate the menu", do you mean the vic menu(s) on the
> > capture machine itself, or the "Manage my Node" menu (back on the
> > display machine) to configure vic via VideoProducer instance(s)?
> >
> > What frame rate are you attempting? For PAL, 24fps is usually the max
> > for standard composite/s-video bt878 capture boards, rather than the
> > expected 25fps. Perhaps there's a similar problem for NTSC (try using
> > 29fps, rather than the expected 30fps)? Also, any USB camera running
> > with 2.4.x kernels is _very_ inefficient, and will cause the symptoms
> > you describe, at greater than 21fps.
> >
> > Any other apps running on the capture machine chewing up cpu cycles?
> >
> > Are other applications on the capture machine affected the same way
> > (slow to respond)?
> >
> >
> > chris
> >
> >
> > Christoph Willing                           +61 7 3365 8350
> > QPSF Access Grid Manager
> > University of Queensland
> >
> >
>
>




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