(I re-send this 'cause before I left the wrong subject in the email)
Hi Oded, sorry if it sounds obvious, but have you tried starting Pd with the flag -rt?
the flag will set Pd to get an actual real-time priority.
M
Message: 3Date: Thu, 4 Mar 2010 11:13:24 -0800 (PST)
From: Oded Ben-Tal oded@ccrma.Stanford.EDU Subject: Re: [PD] audio breaking To: Ricardo Lameiro ricardolameiro@gmail.com Cc: pd-list@iem.at Message-ID: alpine.LFD.2.00.1003041112350.8616@ccrma-gate.stanford.edu Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
I thinj he is using realtime kernel, as he is running jack with the -R
flag (reatime)
otherwise jack wouldn even start.
Yes, I'm using the rt-kernel from planet CCRMA.
I used to have to run Pd + JACK as -rt under sudo or root on Linux to get good performance. Maybe there's another way with permissions and groups and such, it's been a while since I fooled with it.
D.
On 3/4/10 11:41 PM, Marco Donnarumma wrote:
(I re-send this'cause before I left the wrong subject in the email)
Hi Oded, sorry if it sounds obvious, but have you tried starting Pd with the flag -rt?
the flag will set Pd to get an actual real-time priority.
M
Message: 3Date: Thu, 4 Mar 2010 11:13:24 -0800 (PST)
From: Oded Ben-Tal <oded@ccrma.Stanford.EDU <mailto:oded@ccrma.Stanford.EDU>> Subject: Re: [PD] audio breaking To: Ricardo Lameiro <ricardolameiro@gmail.com <mailto:ricardolameiro@gmail.com>> Cc: pd-list@iem.at <mailto:pd-list@iem.at> Message-ID: <alpine.LFD.2.00.1003041112350.8616@ccrma-gate.stanford.edu <mailto:alpine.LFD.2.00.1003041112350.8616@ccrma-gate.stanford.edu>> Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > I thinj he is using realtime kernel, as he is running jack with the -R flag (reatime) > otherwise jack wouldn even start. Yes, I'm using the rt-kernel from planet CCRMA.
-- Marco Donnarumma aka TheSAD Independent New Media Arts Professional, Performer, Teacher - Edinburgh, UK
PORTFOLIO: http://marcodonnarumma.com LAB: http://www.thesaddj.com | http://cntrl.sourceforge.net | http://www.flxer.net EVENT: http://www.liveperformersmeeting.net
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
I usually follow this guide for getting realtime privileges as normal user:
https://help.ubuntu.com/community/UbuntuStudioPreparation#line-127
Roman
On Thu, 2010-03-04 at 23:52 +0100, Derek Holzer wrote:
I used to have to run Pd + JACK as -rt under sudo or root on Linux to get good performance. Maybe there's another way with permissions and groups and such, it's been a while since I fooled with it.
D.
On 3/4/10 11:41 PM, Marco Donnarumma wrote:
(I re-send this'cause before I left the wrong subject in the email)
Hi Oded, sorry if it sounds obvious, but have you tried starting Pd with the flag -rt?
the flag will set Pd to get an actual real-time priority.
M
Message: 3Date: Thu, 4 Mar 2010 11:13:24 -0800 (PST)
From: Oded Ben-Tal <oded@ccrma.Stanford.EDU <mailto:oded@ccrma.Stanford.EDU>> Subject: Re: [PD] audio breaking To: Ricardo Lameiro <ricardolameiro@gmail.com <mailto:ricardolameiro@gmail.com>> Cc: pd-list@iem.at <mailto:pd-list@iem.at> Message-ID: <alpine.LFD.2.00.1003041112350.8616@ccrma-gate.stanford.edu <mailto:alpine.LFD.2.00.1003041112350.8616@ccrma-gate.stanford.edu>> Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > I thinj he is using realtime kernel, as he is running jack with the -R flag (reatime) > otherwise jack wouldn even start. Yes, I'm using the rt-kernel from planet CCRMA.
-- Marco Donnarumma aka TheSAD Independent New Media Arts Professional, Performer, Teacher - Edinburgh, UK
PORTFOLIO: http://marcodonnarumma.com LAB: http://www.thesaddj.com | http://cntrl.sourceforge.net | http://www.flxer.net EVENT: http://www.liveperformersmeeting.net
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Telefonate ohne weitere Kosten vom PC zum PC: http://messenger.yahoo.de
yep, that's the one I used too. You can easily avoid to run everything as sudo including your user and the root in a couple of specific groups.
On Fri, Mar 5, 2010 at 9:49 AM, Roman Haefeli reduzierer@yahoo.de wrote:
I usually follow this guide for getting realtime privileges as normal user:
https://help.ubuntu.com/community/UbuntuStudioPreparation#line-127
Roman
On Thu, 2010-03-04 at 23:52 +0100, Derek Holzer wrote:
I used to have to run Pd + JACK as -rt under sudo or root on Linux to get good performance. Maybe there's another way with permissions and groups and such, it's been a while since I fooled with it.
D.
On 3/4/10 11:41 PM, Marco Donnarumma wrote:
(I re-send this'cause before I left the wrong subject in the email)
Hi Oded, sorry if it sounds obvious, but have you tried starting Pd with the
flag -rt?
the flag will set Pd to get an actual real-time priority.
M
Message: 3Date: Thu, 4 Mar 2010 11:13:24 -0800 (PST)
From: Oded Ben-Tal <oded@ccrma.Stanford.EDU <mailto:oded@ccrma.Stanford.EDU>> Subject: Re: [PD] audio breaking To: Ricardo Lameiro <ricardolameiro@gmail.com <mailto:ricardolameiro@gmail.com>> Cc: pd-list@iem.at <mailto:pd-list@iem.at> Message-ID: <alpine.LFD.2.00.1003041112350.8616@ccrma-gate.stanford.edu <mailto:alpine.LFD.2.00.1003041112350.8616@ccrma-gate.stanford.edu Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > I thinj he is using realtime kernel, as he is running jack with the -R flag (reatime) > otherwise jack wouldn even start. Yes, I'm using the rt-kernel from planet CCRMA.
-- Marco Donnarumma aka TheSAD Independent New Media Arts Professional, Performer, Teacher -
Edinburgh, UK
PORTFOLIO: http://marcodonnarumma.com LAB: http://www.thesaddj.com | http://cntrl.sourceforge.net | http://www.flxer.net EVENT: http://www.liveperformersmeeting.net
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management ->
http://lists.puredata.info/listinfo/pd-list
Telefonate ohne weitere Kosten vom PC zum PC: http://messenger.yahoo.de
thanks for the pointers. The setup of rt kernel is one of the main reasons I'm using planetCCRMA version (where nando manages to take care of these issues letting normal users access rt priorities). I am still baffled by the fact that I get synch errors from pd even when not doing any audio (no patch open. and these are not only the initial errors when launching pd). And also the fact that I can get good audio playback reliably from snd (soundeditor). Doesn't that suggest that the problem is not with jack/firewire but perhaps with pd?
Oded
https://help.ubuntu.com/community/UbuntuStudioPreparation#line-127
Roman
On Thu, 2010-03-04 at 23:52 +0100, Derek Holzer wrote:
I used to have to run Pd + JACK as -rt under sudo or root on Linux to get good performance. Maybe there's another way with permissions and groups and such, it's been a while since I fooled with it.
D.
On 3/4/10 11:41 PM, Marco Donnarumma wrote:
(I re-send this'cause before I left the wrong subject in the email)
Hi Oded, sorry if it sounds obvious, but have you tried starting Pd with the flag -rt?
the flag will set Pd to get an actual real-time priority.
M
Message: 3Date: Thu, 4 Mar 2010 11:13:24 -0800 (PST)
From: Oded Ben-Tal <oded@ccrma.Stanford.EDU <mailto:oded@ccrma.Stanford.EDU>> Subject: Re: [PD] audio breaking To: Ricardo Lameiro <ricardolameiro@gmail.com <mailto:ricardolameiro@gmail.com>> Cc: pd-list@iem.at <mailto:pd-list@iem.at> Message-ID: <alpine.LFD.2.00.1003041112350.8616@ccrma-gate.stanford.edu <mailto:alpine.LFD.2.00.1003041112350.8616@ccrma-gate.stanford.edu>> Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > I thinj he is using realtime kernel, as he is running jack with the -R flag (reatime) > otherwise jack wouldn even start. Yes, I'm using the rt-kernel from planet CCRMA.
-- Marco Donnarumma aka TheSAD Independent New Media Arts Professional, Performer, Teacher - Edinburgh, UK
PORTFOLIO: http://marcodonnarumma.com LAB: http://www.thesaddj.com | http://cntrl.sourceforge.net | http://www.flxer.net EVENT: http://www.liveperformersmeeting.net
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Telefonate ohne weitere Kosten vom PC zum PC: http://messenger.yahoo.de
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
I have the same problem. You should look into the jack control setup and play around with the period and buffer. Pd with other than 2 periods start to give lot of sync erros. The problem is that in a firewire device 2 periods is not enough. So for me its a Pd issue in here. Try it with 2 periods and see if pd gives errors(jack will start to have xruns but its only to test pd).
Cya
On 6 Mar 2010 10:05, "Oded Ben-Tal" oded@ccrma.stanford.edu wrote:
thanks for the pointers. The setup of rt kernel is one of the main reasons I'm using planetCCRMA version (where nando manages to take care of these issues letting normal users access rt priorities). I am still baffled by the fact that I get synch errors from pd even when not doing any audio (no patch open. and these are not only the initial errors when launching pd). And also the fact that I can get good audio playback reliably from snd (soundeditor). Doesn't that suggest that the problem is not with jack/firewire but perhaps with pd?
Oded
https://help.ubuntu.com/community/UbuntuStudioPreparation#line-127
Roman
On Thu, 20...