[PD] "-rt" as user?

[guenter geiger]

On 24 Mar 2003, Michael Hackl wrote:
> Hi
>
> http://www.linuxdevices.com/articles/AT8906594941.html
>
> some details and tests about the chances of the kernel interrupting pd
> preemptive patch / low-latency patch
>
> Has anyone experience with a kernel with both patches applied and pd?

If you want to run pd together with jack the patches are definitely
necessary, otherwise jack will not run without producing underruns.

Especially the low-latency patch improves the situation a lot on
a loaded system (e.g. if you want to read/write from harddisk in you
patch).

Guenter

>
> ciao
> Michael
> plankton labs
>
> Am Son, 2003-03-23 um 13.09 schrieb Frank Barknecht:
> > Hallo,
> > Andre Schmidt hat gesagt: // Andre Schmidt wrote:
> >
> > > i used "chmod +s /usr/local/bin/pd" as "su"
> > > then runned:
> > > -------------------
> > > huolong at linux:~> pd -alsa -alsadev 1,2 -nomidi -rt
> > > Sample width set to 2 bytes
> > > priority 96 scheduling enabled.
> > > memory locking enabled.
> > > priority 98 scheduling enabled.
> > > memory locking enabled.
> > > -------------------
> > > pd starts and audio worx...
> > > so, does my suse8.1 have a RT kernel or is pd just emulating
> >
> > Pd runs with "realtime" even on an unpatched plain vanilla kernel. The
> > low latency patches just lower the chances, that the kernel itself
> > will interrupt you audio processing.
> >
> > ciao
> > --
> >  Frank Barknecht                               _ ______footils.org__
> >
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> >
>
>
>
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