[Csnd] Low latency kernel
Date | 2012-03-07 22:24 |
From | COCHEDELAFERTE |
Subject | [Csnd] Low latency kernel |
Hi all, Since a while i ask myself this trivial question, but can't find a definitive answer, except of course to try really : could be a low latency (or just RT ? What as difference ?) kernel useful for Csound, assuming that i (2.6.32-5-amd64 on Debian) use it only with Blue or directly in command line, with Portaudio or Alsa as realtime renderer, but never with Jack, Pulseaudio or any sound server or other additional mechanism. What do you mean about ? Cheers, Sergio -- View this message in context: http://csound.1045644.n5.nabble.com/Low-latency-kernel-tp5545812p5545812.html Sent from the Csound - General mailing list archive at Nabble.com. |
Date | 2012-03-08 08:39 |
From | Victor Lazzarini |
Subject | Re: [Csnd] Low latency kernel |
yes, definitely. Your gains with alsa (or portaudio) could be significative. It might also depend on the HW and its alsa module. With an RT kernel, I used to be able to go down to 32 samples in my laptop with the onboard sound, but somehow, with my usb quattro, I could only get to 256 before dropouts started. Regards Victor On 7 Mar 2012, at 22:24, COCHEDELAFERTE wrote: > Hi all, > > > Since a while i ask myself this trivial question, but can't find a > definitive answer, except of course to try really : could be a low latency > (or just RT ? What as difference ?) kernel useful for Csound, assuming that > i (2.6.32-5-amd64 on Debian) use it only with Blue or directly in command > line, with Portaudio or Alsa as realtime renderer, but never with Jack, > Pulseaudio or any sound server or other additional mechanism. > > What do you mean about ? > > > Cheers, > > Sergio > > -- > View this message in context: http://csound.1045644.n5.nabble.com/Low-latency-kernel-tp5545812p5545812.html > Sent from the Csound - General mailing list archive at Nabble.com. > > > Send bugs reports to the Sourceforge bug tracker > https://sourceforge.net/tracker/?group_id=81968&atid=564599 > Discussions of bugs and features can be posted here > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound" > Dr Victor Lazzarini Senior Lecturer Dept. of Music NUI Maynooth Ireland tel.: +353 1 708 3545 Victor dot Lazzarini AT nuim dot ie |
Date | 2012-03-08 17:40 |
From | COCHEDELAFERTE |
Subject | [Csnd] Re: Low latency kernel |
Hi Victor, Thank's greatly for your ambiguityless answer, that's exactly what i expected, yes or no. Now i'll search what Debian offers, i readed that RT kernels are available in several versions and ports. Just a supplemetar question again : is there a différence between what is named "RT kernel" and "low latency kernel", or there are only two words for the same thing ? Cheers, Sergio -- View this message in context: http://csound.1045644.n5.nabble.com/Low-latency-kernel-tp5545812p5548257.html Sent from the Csound - General mailing list archive at Nabble.com. |
Date | 2012-03-08 17:44 |
From | Victor |
Subject | Re: [Csnd] Re: Low latency kernel |
Generally yes, they mean the same thing On 8 Mar 2012, at 17:40, COCHEDELAFERTE |
Date | 2012-03-08 18:09 |
From | COCHEDELAFERTE |
Subject | [Csnd] Re: Low latency kernel |
OK, Victor, thank's ! Cheers, Sergio -- View this message in context: http://csound.1045644.n5.nabble.com/Low-latency-kernel-tp5545812p5548351.html Sent from the Csound - General mailing list archive at Nabble.com. |
Date | 2012-03-09 00:13 |
From | Shawn Richard |
Subject | Re: [Csnd] Re: Low latency kernel |
switching kernels in no hard but i spend a hour trying to find one so are all the real time kernels the same so with one is the best for csound or pd ect? On Thu, Mar 8, 2012 at 10:09 AM, COCHEDELAFERTE |
Date | 2012-03-09 15:33 |
From | COCHEDELAFERTE |
Subject | [Csnd] Re: Low latency kernel |
Yes. Also to switch between the kernels will need (for me), each time, the full re-compilation of the (Nvidia) graphic driver. That can be a bit worrying, because i some times readed about an eventual "unstability" of the RT kernels. But in all cases the only way is to try physically... -- View this message in context: http://csound.1045644.n5.nabble.com/Low-latency-kernel-tp5545812p5550906.html Sent from the Csound - General mailing list archive at Nabble.com. |