On Xubuntu 12.04 I found the same /etc/security/limits.d/audio.conf file with rtprio 95 specified for the audio group. So this setting must be around for quite a while, and not limited to Debian / Raspbian. I can't find any documentation or even mailing list discussion explaining the rationale.
Miller has today responded to this fait accompli with the release of pd 0.46-3 which respects that level, so it can't be bothered by jackd's default setting. Thanks Miller! This irons out a lot of the confusion. By the way I found that when I created /etc/security/limits.d/puredata.conf it has precedence over /etc/security/limits.d/audio.conf, probably because of it's alpha-numerical rank. Would this for pd users be the most transparent option to set real time priority? Or am I overlooking some drawback? Katja On Thu, Dec 11, 2014 at 1:32 PM, Kaj Ailomaa <[email protected]> wrote: > > > On Wed, Dec 10, 2014, at 04:23 PM, katja wrote: >> On Wed, Dec 10, 2014 at 11:31 AM, Kaj Ailomaa <[email protected]> >> 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 :). _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
