I had problems with xruns using the nouveau driver, the nvidia driver improved performance here. Hope that this helps.
2010/10/18 Raphael Raccuia <rafael.racc...@blindekinder.com>: > I still have a lot of DIO errors... no idea how to manage that? > "I also do get some xruns now and then when moving around gui object" > I have a lot (1 every 30 sec when I don't touch nothing, more if I play with > a patch), and they are really audibles... > r > > Raphael Raccuia a écrit : >> >> tried with just one security config, no changes... >> >> Lorenzo a écrit : >>> >>>> -RME Multiface I /HDSP expresscard >>>> >>> >>> So this (not the pcmcia) works on linux? That's interesting news. >> >> OT: it should... I asked on many forums to be sure it does, and people >> said me "it's basically the same as pcmcia"... but I have a lot of trouble: >> freeze on boot 9/10... but 1/10, when it works it works pretty good! It >> could be a hardware issue (my computer). I'm talking with a RME technician >> to fix it, or almost know where the problem comes from... >>> >>> I also do get some xruns now and then when moving around gui object (like >>> selecting a whole lot of objects and moving them around) even with rt >>> kernel, pd run with -rt etc etc... >>> Otherwise it is usually *quite* stable. >>> >>> Lorenzo >>>> >>>> Of course jack run with -R. I repeat I don't have any problem to run >>>> application with really good latency: yesterday, I forgot to increase >>>> buffer as I worked on a 96000Hz Ardour session... I noticed I was >>>> working at 5ms I/O after one hour recording and playing a lot of tracks, >>>> and no xrun, no problems... >>>> I also think it's not a good Idea to run pd as root... and I suppose >>>> other application won't connect to jack if I run it as root also. >>>> >>>> I noticed I had two times the @audio config (limits.conf, audio.conf). >>>> You'll say: "better twice than nothing"... But maybe it generates a >>>> conflict... I try >>>> >>>> Le mardi 12 octobre 2010 à 11:50 -0300, Bernardo Barros a écrit : >>>> >>>>> >>>>> Don't run programs as root, your system will be as insecure as a >>>>> windows box... >>>>> Just allow rt privileges to the audio group, and add yourself to this >>>>> group. >>>>> Then start jack with rt privileges. All software linked to Jack will >>>>> run with -rt. >>>>> >>>>> from http://jackaudio.org/faq >>>>> >>>>> JACK requires real-time scheduling privileges for reliable, >>>>> dropout-free operation. The server requests these privileges when >>>>> running with the -R option. >>>>> >>>>> Most recent distributions use PAM to manage the permissions of users >>>>> on a relatively granular level. If the file /etc/security/limits.conf >>>>> exists on your system, it is using PAM. In order to configure PAM such >>>>> that normal users can run jackd with realtime privileges make sure the >>>>> following lines exist: >>>>> @audio - rtprio 99 >>>>> @audio - memlock unlimited >>>>> >>>>> >>>>> 2010/10/12 Pedro Lopes<pedro.lo...@ist.utl.pt>: >>>>> >>>>>> >>>>>> If you start pd in sudo, you have to connect to jack in sudo mode. >>>>>> Thus >>>>>> start jack in sudo (or gksudo for qjackctl). >>>>>> I advise to use an rt kernel too. See documentation of Ubuntu Studio. >>>>>> >>>>>> On Tue, Oct 12, 2010 at 3:27 PM, Raphael Raccuia >>>>>> <rafael.racc...@blindekinder.com> wrote: >>>>>> >>>>>>> >>>>>>> Hi list, >>>>>>> I tested Pd rt as I need low latency for a performance next week... >>>>>>> It seems -rt flag doesn't have any effect. I measured Pd latency with >>>>>>> jdelay, and always get 640 (@48000), so about 13ms (pd only)... lower >>>>>>> I >>>>>>> set buffer in jack (no less than 256), more DIO errors I get... and >>>>>>> there are a lot! This setting works great with many application >>>>>>> (Ardour...), with about 10ms (~15 really). So I would have ~25ms, >>>>>>> which >>>>>>> is acceptable, but too many DIO errors! >>>>>>> >>>>>>> -what is -defeatrt setting? (I tried 0 and 1, no change) >>>>>>> -why is -rt flag without effect? >>>>>>> -tried nosleep, no change... >>>>>>> >>>>>>> I also tried to start pd in root (sudo)... >>>>>>> >>>>>>> It says: >>>>>>> priority 8 scheduling enabled. >>>>>>> priority 6 scheduling enabled. >>>>>>> (which I normally don't have) >>>>>>> >>>>>>> but unfortunately can't connect to jack (state 17) >>>>>>> >>>>>>> thank's for your help >>>>>>> >>>>>>> >>>>>>> _______________________________________________ >>>>>>> Pd-list@iem.at mailing list >>>>>>> UNSUBSCRIBE and account-management -> >>>>>>> http://lists.puredata.info/listinfo/pd-list >>>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Pedro Lopes (ongoing MSc) >>>>>> contact: pedro.lo...@ist.utl.pt >>>>>> website: http://web.ist.utl.pt/Pedro.Lopes >>>>>> >>>>>> _______________________________________________ >>>>>> Pd-list@iem.at mailing list >>>>>> UNSUBSCRIBE and account-management -> >>>>>> http://lists.puredata.info/listinfo/pd-list >>>>>> >>>>>> >>>>>> >>>> >>>> >>>> _______________________________________________ >>>> Pd-list@iem.at mailing list >>>> UNSUBSCRIBE and account-management -> >>>> http://lists.puredata.info/listinfo/pd-list >>>> >>> >>> _______________________________________________ >>> Pd-list@iem.at mailing list >>> UNSUBSCRIBE and account-management -> >>> http://lists.puredata.info/listinfo/pd-list >> >> _______________________________________________ >> Pd-list@iem.at mailing list >> UNSUBSCRIBE and account-management -> >> http://lists.puredata.info/listinfo/pd-list > > _______________________________________________ > Pd-list@iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > _______________________________________________ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list