Re: [GnomeMeeting-list] How to fix sound choppy on CPU load?

[Johnny Strom <jonny strom netikka fi>]

Hi All

I tried to start a quite recent snapshot of GM on RH 9 with orginal
RH kernel and everything, I did not make a call and GM did not use 100%
CPU, it was ok as far as I could see.

I could build a new CVS snapshot of GM tonight if someone wants to test 
it on RH 9.

Cheers Johnny


Damien Sandras wrote:
> Hi Mihai,
>
> Le mer 05/11/2003 à 19:20, Mihai T. Lazarescu a écrit :
>
> > It behaves the same on a PIII 600MHz using oss and an Athlon
> > 1GHz using ALSA.
>
>
> That's not normal. I have already used GnomeMeeting on a Pentium 233 MHz
> with 64Megs of RAM in the past. Does it only happen on high-activity?
>
>
> > However, since the movement of the default picture sliding
> > up and down gets choppy as well, I would exclude a sound
> > driver problem.
>
>
> Yes
>
>
> > The point was that it does not even appears a shortage of
> > CPU cycles to be the cause, since there is no perceptible
> > improvement when giving the process the highest user-space
> > priority.  Given this, I suspect a kernel-space problem,
> > hence NPTL glitch came to mind.
>
>
> We have other RedHat 9 users who do not have problems.
> I wonder :
> - when it happens, does GnomeMeeting take 100% of the CPU?
> - what is your load average when it happens?
> - are things normal on normal CPU load?
>
>
> Johnny, in CC, will try to reproduce your problem on his RedHat 9.
>
>
> > Thanks,
> >
> > Mihai
> >
> > On Wed, 5 Nov 2003, Damien Sandras wrote:
> >
> >
> > > Le mer 05/11/2003 à 15:18, Mihai T. Lazarescu a écrit :
> > >
> > > > Hello,
> > > >
> > > > First of all, great tool Gnomemeeting!!
> > > >
> > > > I'm a bit out of luck trying to reduce audio choppiness (in
> > > > and out) when there is some CPU load.  I tried to raise the
> > > > priority of the gnomemeeting process up to highest available
> > > > but the behavior don't change at all.  Even the movement of
> > > > the default picture sliding up and down is choppy as well,
> > > > regardless of the priority of the process.
> > > >
> > > > I use version 0.98.5 on RedHat Linux 9. Can this be related
> > > > to NPTL-moved-to-kernel bug?  Any hints highly appreciated!
> > >
> > > What's your CPU type?
> > > Chopiness in the sound when the CPU is active is due to the driver.
> > > Perhaps you could try ALSA, but I can't promise it will be better.
> > > However, it should be ok if you have a modern processor and you
> > > shouldn't have that kind of problems. (I have no problem on a P3 500 SMP
> > > compiling for example)
> >
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