[PD] -nosleep flag not doing anything? (Ubuntu 10.4 - Pd-extended 0.42.5)

[Miller Puckette]

It's posible the difference is in the choice of audio API (oss vs. alsa)
or something like that -- "nosleep" prevents Pd from explicitly sleeping
but sometimes transferring data to DACs blocks the process.

cheers
Miller

On Fri, May 07, 2010 at 03:36:33PM +0100, Pedro Lopes wrote:
> Here it works:
> $ pd -nosleep
> Gives one of the CPU's 100% load fulltime. No need to run in root for this.
> My startup alredy boots pd with -rt flag and I have the limits.conf tuned as
> reported on the wiki/documentation.
> 
> The system is:
> $ Linux 2.6.31-9-rt #152-Ubuntu SMP PREEMPT RT Thu Oct 15 05:01:14 UTC 2009
> i686 GNU/Linux
> (Ubuntu 9.10 rt)
> (The CPU is a *AMD* Turion 64 X2 TL-60.)
> 
> On Fri, May 7, 2010 at 8:31 AM, Ingo Scherzinger <ingo at miamiwave.com> wrote:
> 
> > Well, I tried running Pd both as a normal user (with realtime rights) and
> > root (from the console). In either case case the gnome-system-monitor said
> > "sleeping" unless I went over 50% CPU usage for a moment with that
> > particular pd patch.
> > I'm using an AMD Athlon II X2 250 dual core with 3.0 GHz.
> >
> > Ingo
> >
> > > -----Urspr?ngliche Nachricht-----
> > > Von: Miller Puckette [mailto:mpuckett at imusic1.ucsd.edu]
> > > Gesendet: Freitag, 7. Mai 2010 05:31
> > > An: Ingo Scherzinger
> > > Cc: 'pd-list'
> > > Betreff: Re: [PD] -nosleep flag not doing anything? (Ubuntu 10.4 -
> > Pd-extended
> > > 0.42.5)
> > >
> > > Hi Ingo,
> > >
> > > I've tested this on linux (although not recently) and it seemed to work.
> > > Naturally, you need at least a 2-processor machine, otherwise the machine
> > > will freeze.
> > >
> > > Should theoretically work on Mac too, but I don't have any 2+-processor
> > > mac to try it on.  Probably does nothing on windows.
> > >
> > > cheers
> > > Miller
> > >
> > > On Thu, May 06, 2010 at 08:13:43PM +0200, Ingo Scherzinger wrote:
> > > > I just noticed that the -nosleep flag dosn't seem to do anything. When
> > I
> > > > take a look at the system monitor it says about pd "sleeping" until I
> > do
> > > > something. Even while doing some "light" things it keeps saying
> > "sleeping".
> > > > Is there any condition I have to set in the system to recognise the
> > > > -nosleep flag. Realtime is turned on. I had to change some audio
> > properties
> > > > to be able to use -rt without being root. Is there something similar
> > about
> > > > "-nosleep"? Does the "-nosleep" flag actually help anything? Especially
> > when
> > > > the system load gets heavy?
> > > >
> > > >
> > > >
> > > > Ingo
> > > >
> > >
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> 
> 
> 
> -- 
> Pedro Lopes
> contacto: jazz at radiozero.pt
> website: http://web.ist.utl.pt/Pedro.Lopes

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