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

[Damien Sandras <dsandras seconix com>]

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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 _      Damien Sandras
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