[PlanetCCRMA] [rt-kernel] dubugging mode?

[Fernando Lopez-Lezcano]

On Mon, 2009-12-07 at 01:53 -0800, Er wrote:
> Hi!
> 
> Thank you for being so quick to answer every time! Truthfully, 
> I don't know if there is any link between that message and my 
> prformances... I thought so, but I have no proof!
> 
> 
> Nonetheless the symptoms are pretty obvious : jack "jumps" 
> (it's a clearly hearable xrun) every 0.5 seconds.... while 
> it works fine in the normal kernel...
> 
> To you have any Ideas? 

Sorry, not really. Xruns every 0.5 seconds would point to some periodic
process, most probably nothing to do with the debugging options in the
build. 

What are the settings you are using with jack? Which version of jack are
you running?

-- Fernando


> --- En date de : Lun 7.12.09, Fernando Lopez-Lezcano <nando at ccrma.Stanford.EDU> a écrit :
> 
> > De: Fernando Lopez-Lezcano <nando at ccrma.Stanford.EDU>
> > Objet: Re: [PlanetCCRMA] [rt-kernel] dubugging mode?
> > À: "Er" <etiennerouge at yahoo.com>
> > Cc: planetccrma at ccrma.Stanford.EDU
> > Date: Lundi 7 Décembre 2009, 2h24
> > On Sun, 2009-12-06 at 14:48 -0800, Er
> > wrote:
> > > Hi,
> > > 
> > > Since the F12 upgrade I got a warning when starting rt
> > kernel saying :
> > > 
> > > "the debugging option is turned on in your config, it
> > may increase 
> > > buffer overrun or latency"
> > > 
> > > Or something like that. Indeed, it does increase my
> > latency a 
> > > lot (if I compare it to the standard kernel)! How can
> > I switch 
> > > it off?
> > > 
> > > Thanks for your help!
> > 
> > Sorry, that is an option that is built into the kernel at
> > compile time
> > so it is not possible (AFAIK) to turn it off. I can take a
> > look at it
> > for the next build (I think it may be coming from the
> > Fedora
> > configuration files). 
> > 
> > How do you determine you have more latency? What are the
> > symptoms? I
> > don't see a performance hit myself. 
> > 
> > -- Fernando
> > 
> > 
> > 
> 
> 
>