[PD] Raspberry Pi & pd 0.46 with real time priority

[Kaj Ailomaa]

On Wed, Dec 10, 2014, at 04:23 PM, katja wrote:
> On Wed, Dec 10, 2014 at 11:31 AM, Kaj Ailomaa <zequence at mousike.me>
> wrote:
> >
> >
> > On Wed, Dec 10, 2014, at 02:45 AM, katja wrote:
> >> /etc/security/limits.d/audio.conf, with the following content:
> >>
> >> @audio   -  rtprio     95
> >> @audio   -  memlock    unlimited
> >> #@audio   -  nice      -19
> >>
> >
> > Doesn't this file come with jackd? Haven't checked on Raspbian, but this
> > is the case on Debian.
> > This works well on Debian, since user is member of audio group by
> > default.
> 
> 
> You're right Kaj, the file itself says it: 'provided by the jackd
> package'. So it's not a Raspbian default. How could I miss that while
> checking and tweaking the file a dozen times.
> 
> I wonder why the file sets real time priority 95, while official
> jackaudio documentation
> (http://jackaudio.org/faq/linux_rt_config.html) recommends level 99.
> If level 95 is Debian tradition, it would be best for pd to comply
> with that level.
> 
> Katja

I think there are some different opinions on what is safe, but I
wouldn't be able to explain the difference. That is just the way jackd
has been packaged for a while I guess :).