Hi Olivier, I dont have much time on my hands now, but I tested your patch in my Ubuntu 9.10 using jack. results:
1) I lauched the first one, it took quite a while and CPU bursted as soon as the patch opened (meaning.. heavy patch :D) 1.1) I draw and played a sequence, audio is okay. 2) I launched the second. Major CPU burst, that pdextended went almost to 90% cpu all the time 2.1) The audio began to glitch. (but no xruns on jack) 3) I launched a pdextended just to play test audio sinewave, it launched fairly quick (of course the CPU was busy with other instances..so not as quick as usual) and played without glitch. I need to test more with more time on my hands, but it seems that its more related to how heavy the script is rather than the jack setup. But i really need to test it further, and change jack latency to see if it affects that much... jack never went past 10% os usage, which is normal for that many instances (sometimes i use pd and renoise, and it goes much higher). My jack setup was: - rt (I have rt kernel) - buffer at 512 and 3 period - using the onboard sound card which is sh*t - my laptop is also sh*t for nowadays standards (AMD 1.9 Turion X2) Best regards, Pedro On Wed, Jul 7, 2010 at 1:14 AM, Olivier Baudu <[email protected]>wrote: > Hi. > > I'm going to try to expose the problems I've met during the last two month > dealing with the title of my post. > Sorry if it's confused. > > This winter, I used to work on an Ubuntu Hardy, Extended 0.41.4 and with > the jackd and qjackctl from the official repository (by the way, my sound > card is a firewire Presonus Firepod). > I had no problem to use 4 different instances of Pd at the same time using > jackd as sound server. (and I can precise I didn't need RT-kernel to do what > I wanted). > > I recently change for Ubuntu Lucid. > So I also change for Pd 0.42.5 (rc4) and the new official jackd and > qjackctl. > > If I use the kernel 2.6.32-23, I can play my patch on one instance, it's > stable but the sound crunch a little bit sometimes. > I also can execute my patch on 4 instances, but the sound is awful and 3 > minutes later, Jack quit. > > So I've try the 2.6.31-11-rt. > In Pd-ext, If I change directly from ALSA to Jack, pd quit. Every time I > have to change to OSS before to choice Jack and I can't save the jack > configuration. > On one instance the sound is perfect and stable. > It's possible to launch 4 instances without patch and to hear > simultaneously the 4 tests tones on my sound card using jack. > But it's impossible to launch even 2 instances with my patch. > Both quit at the same time when I try to pass from OSS to Jack on the > second. > Console message just tell me that GUI of Pd have quited. > > My patch is the one you can find on this page : > http://yamatierea.org/papatchs/squareroom/OSR.htm > Direct link for the patch : > http://yamatierea.org/papatchs/squareroom/OSR.zip > But be careful if you look inside... it's still a little bit fuzzy... > > Do you think there is a way to solve my problem ? > --> Using my patch, simultaneously on 4 instances of Pd-extended using Jack > on Ubuntu 10.04? > > Thank you. > > 01ivier > > _______________________________________________ > [email protected] mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > > -- Pedro Lopes contacto: [email protected] website: http://web.ist.utl.pt/Pedro.Lopes
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