From: music-request(a)lists.fedoraproject.org
Subject: music Digest, Vol 48, Issue 17
To: music(a)lists.fedoraproject.org
Date: Thu, 28 Apr 2011 12:00:17 +0000
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Today's Topics:
1. Re: kernel I use for music production (David Timms)
2. Looking to get involved (William Blackburn)
3. Re: Looking to get involved (David Timms)
4. Re: Looking to get involved (adam(a)linkedlistcorruption.com)
5. Re: Looking to get involved (Fernando Lopez-Lezcano)
6. Re: kernel I use for music production (Fernando Lopez-Lezcano)
7. Re: Looking to get involved (Orcan Ogetbil)
----------------------------------------------------------------------
Message: 1
Date: Wed, 27 Apr 2011 22:54:45 +1000
From: David Timms <dtimms(a)iinet.net.au>
Subject: Re: [Fedora-music-list] kernel I use for music production
To: music(a)lists.fedoraproject.org
Message-ID: <4DB81215.9040807(a)iinet.net.au>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 27/04/11 01:53, William Blackburn wrote:
>
> Hello, I want to share something with the music community. I have
> been using the stock 2.6.38.4 kernel with the "ck" patch and have had
> nothing but great results with it. No X-runs or anything. If anyone
> is interested, feel free to ask me some questions about it.
Are you saying patch and build ?
What problems were you having with standard Fedora 15 kernel ?
Is this with a slower or single core machine ?
------------------------------
Message: 2
Date: Wed, 27 Apr 2011 14:08:28 +0000
From: William Blackburn <bill_-(a)hotmail.com>
Subject: [Fedora-music-list] Looking to get involved
To: <music(a)lists.fedoraproject.org>
Message-ID: <SNT133-w2589D123B7F372F49C9D39B6980(a)phx.gbl>
Content-Type: text/plain; charset="iso-8859-1"
Hello, you guys have most likely seen me on this before when I was
asking questions about something. However, I have been using Fedora
for a while now and I would like begin to get involved with the music
community. I am looking to maybe learn how to package things or to do
anything that would help out. Basically, I want to be part of the
team.
I wrote a wiki in the past but it has since been obsoleted.
This is the link.
https://fedoraproject.org/wiki/User:Tertl3/real-time
What could I do to help out?
Thanks a lot everyone!
Bill Blackburn (tertl3 on IRC)
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Message: 3
Date: Thu, 28 Apr 2011 07:54:13 +1000
From: David Timms <dtimms(a)iinet.net.au>
Subject: Re: [Fedora-music-list] Looking to get involved
To: music(a)lists.fedoraproject.org
Message-ID: <4DB89085.9080205(a)iinet.net.au>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 28/04/11 00:08, William Blackburn wrote:
> What could I do to help out?
1. Testing of new or updated packages:
eg: audacity - building at the moment for f14,15, available for rawhide:
http://koji.fedoraproject.org/koji/packageinfo?packageID=1352
Specifically, note which functions of the app you have taken for a spin,
and had success with. This makes it easier for others to try something
that you haven't.
2. take a CCRMA (or other upstream application) package, update to
fedora guidelines and current version, and submit for fedora review:
http://ccrma.stanford.edu/planetccrma/mirror/fedora/linux/planetccrma/14/...
Choose especially apps that you might actually use, since you will be
long term primary maintainer.
3. work on Music Spin
http://fedoraproject.org/wiki/Music_Creation_Lite_Spin
see the discussion section for an initial review, and hence work to be done.
4. As a group, we probably also need a goals list. The wiki is a good
place to put ideas, and a bit of mail list or IRC discussion could help
to determine priorities, and be able to indicate that you would like to
work on a specific item.
David.
------------------------------
Message: 4
Date: Wed, 27 Apr 2011 18:29:28 -0400 (EDT)
From: adam(a)linkedlistcorruption.com
Subject: Re: [Fedora-music-list] Looking to get involved
To: "David Timms" <dtimms(a)iinet.net.au>
Cc: music(a)lists.fedoraproject.org
Message-ID: <1303943368.308523673(a)webmail.linkedlistcorruption.com>
Content-Type: text/plain;charset=UTF-8
The single biggest thing that Fedora needs is a realtime kernel in the base repo. All the
music packages in the world wont matter if running JACK at lowest latency requires
building your own kernel. When I use Fedora for audio that's what I have to do - build
my own kernel from upstream source.
Building the real time kernel is the easy part. Navigating the Fedora project's
labyrinthine structure and packaging requirements are the hard part.
If you know anything about RPM packaging and/or getting packages into Fedora I would
highly encourage you to look into this. Fedora has plenty of nice packages, but it has no
kernel capable of running them at ultra low latency. I will do anything I can to help you.
Without an easy to install realtime kernel built from upstream (not a patched version of
the Fedora kernel) I can't recommend Fedora to people for audio work. If Fedora did
have a realtime kernel in the base repos it would make it one of the most attractive
distros for audio work.
A
-----Original Message-----
From: "David Timms" <dtimms(a)iinet.net.au>
Sent: Wednesday, April 27, 2011 5:54pm
To: music(a)lists.fedoraproject.org
Subject: Re: [Fedora-music-list] Looking to get involved
On 28/04/11 00:08, William Blackburn wrote:
> What could I do to help out?
1. Testing of new or updated packages:
eg: audacity - building at the moment for f14,15, available for rawhide:
http://koji.fedoraproject.org/koji/packageinfo?packageID=1352
Specifically, note which functions of the app you have taken for a spin,
and had success with. This makes it easier for others to try something
that you haven't.
2. take a CCRMA (or other upstream application) package, update to
fedora guidelines and current version, and submit for fedora review:
http://ccrma.stanford.edu/planetccrma/mirror/fedora/linux/planetccrma/14/...
Choose especially apps that you might actually use, since you will be
long term primary maintainer.
3. work on Music Spin
http://fedoraproject.org/wiki/Music_Creation_Lite_Spin
see the discussion section for an initial review, and hence work to be done.
4. As a group, we probably also need a goals list. The wiki is a good
place to put ideas, and a bit of mail list or IRC discussion could help
to determine priorities, and be able to indicate that you would like to
work on a specific item.
David.
_______________________________________________
music mailing list
music(a)lists.fedoraproject.org
https://admin.fedoraproject.org/mailman/listinfo/music
------------------------------
Message: 5
Date: Wed, 27 Apr 2011 16:09:31 -0700
From: Fernando Lopez-Lezcano <nando(a)ccrma.Stanford.EDU>
Subject: Re: [Fedora-music-list] Looking to get involved
To: adam(a)linkedlistcorruption.com
Cc: music(a)lists.fedoraproject.org
Message-ID: <4DB8A22B.70003@localhost>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 04/27/2011 03:29 PM, adam(a)linkedlistcorruption.com wrote:
> The single biggest thing that Fedora needs is a realtime kernel in the base repo.
Oh yeah.... I would love that!
> All the music packages in the world wont matter if running JACK at
lowest latency requires building your own kernel. When I use Fedora for
audio that's what I have to do - build my own kernel from upstream source.
Any particular reason you don't use the rt patched kernels I build for
Planet CCRMA? (apart from not wanting to use a non-Fedora repository, of
course). Just curious...
> Building the real time kernel is the easy part. Navigating the Fedora project's
labyrinthine structure and packaging requirements are the hard part.
Yes, packaging an rt kernel is not easy, at least when you start... I've
been doing that since 2001 (sigh!).
Last time the subject of "rt kernels into Fedora" came up (2008 I
believe), there was no interest from Fedora or RedHat into getting a
second kernel into their repositories - and the question had already
been asked two years or so before _that_. I could try to dig up the
thread. Maybe things have changed, but I don't hold much hope till the
issue is forced by rt getting into upstream (real soon now? :-). And
then the big discussion will be "should we enable this in the build - it
will break things!"?
I don't see how Fedora would manage two kernels with the support issues
that would surface specially since today the latest "official" rt
patches are for 2.6.33 (I'm testing a forward port to 2.6.34 that
appeared in the rt mailing list, but that is still old).
-- Fernando
> If you know anything about RPM packaging and/or getting packages into Fedora I would
highly encourage you to look into this. Fedora has plenty of nice packages, but it has no
kernel capable of running them at ultra low latency. I will do anything I can to help you.
Without an easy to install realtime kernel built from upstream (not a patched version of
the Fedora kernel) I can't recommend Fedora to people for audio work. If Fedora did
have a realtime kernel in the base repos it would make it one of the most attractive
distros for audio work.
>
> A
>
> -----Original Message-----
> From: "David Timms"<dtimms(a)iinet.net.au>
> Sent: Wednesday, April 27, 2011 5:54pm
> To: music(a)lists.fedoraproject.org
> Subject: Re: [Fedora-music-list] Looking to get involved
>
> On 28/04/11 00:08, William Blackburn wrote:
>> What could I do to help out?
> 1. Testing of new or updated packages:
> eg: audacity - building at the moment for f14,15, available for rawhide:
>
http://koji.fedoraproject.org/koji/packageinfo?packageID=1352
>
> Specifically, note which functions of the app you have taken for a spin,
> and had success with. This makes it easier for others to try something
> that you haven't.
>
> 2. take a CCRMA (or other upstream application) package, update to
> fedora guidelines and current version, and submit for fedora review:
>
http://ccrma.stanford.edu/planetccrma/mirror/fedora/linux/planetccrma/14/...
>
> Choose especially apps that you might actually use, since you will be
> long term primary maintainer.
>
> 3. work on Music Spin
>
http://fedoraproject.org/wiki/Music_Creation_Lite_Spin
> see the discussion section for an initial review, and hence work to be done.
>
> 4. As a group, we probably also need a goals list. The wiki is a good
> place to put ideas, and a bit of mail list or IRC discussion could help
> to determine priorities, and be able to indicate that you would like to
> work on a specific item.
>
> David.
> _______________________________________________
> music mailing list
> music(a)lists.fedoraproject.org
>
https://admin.fedoraproject.org/mailman/listinfo/music
>
>
> _______________________________________________
> music mailing list
> music(a)lists.fedoraproject.org
>
https://admin.fedoraproject.org/mailman/listinfo/music
------------------------------
Message: 6
Date: Wed, 27 Apr 2011 18:46:07 -0700
From: Fernando Lopez-Lezcano <nando(a)ccrma.Stanford.EDU>
Subject: Re: [Fedora-music-list] kernel I use for music production
To: William Blackburn <bill_-(a)hotmail.com>
Cc: music(a)lists.fedoraproject.org
Message-ID: <4DB8C6DF.3060100@localhost>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 04/26/2011 08:53 AM, William Blackburn wrote:
> Hello, I want to share something with the music community. I have been
> using the stock 2.6.38.4 kernel with the "ck" patch and have had nothing
> but great results with it. No X-runs or anything. If anyone is
> interested, feel free to ask me some questions about it. If you are on
> Fedora 15 it might be a good options since I don't think CCRMA has a
> rt-kernel for Fedora 15 yet.
As Fedora 15 does not exist yet...
> I can tell you how I went about installing
> the patched kernel if you need. The patch also is said to speed up basic
> responsiveness, but this subject is up for debate.
A little bit more information would be great. What applications do you
use? Are you running jack for them? With what parameters? (ie: frames
per period, periods per buffer, sampling rate, etc). What soundcard do
you use? Are you really loading the machine when testing?
And with the same conditions what kind of problem did you see in the
regular Fedora 15 kernel?
-- Fernando
------------------------------
Message: 7
Date: Wed, 27 Apr 2011 22:05:09 -0400
From: Orcan Ogetbil <oget.fedora(a)gmail.com>
Subject: Re: [Fedora-music-list] Looking to get involved
To: music(a)lists.fedoraproject.org
Message-ID: <BANLkTikhFrB1w_Udu9DseZEZE4TK9P4M1w(a)mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
On Wed, Apr 27, 2011 at 5:54 PM, David Timms wrote:
> On 28/04/11 00:08, William Blackburn wrote:
>> What could I do to help out?
>
> 2. take a CCRMA (or other upstream application) package, update to
> fedora guidelines and current version, and submit for fedora review:
>
http://ccrma.stanford.edu/planetccrma/mirror/fedora/linux/planetccrma/14/...
>
> Choose especially apps that you might actually use, since you will be
> long term primary maintainer.
>
If you happen to choose this path, this is where you start:
http://fedoraproject.org/wiki/PackageMaintainers/Join
You may want to build up some bash skills if you don't feel absolutely
comfortable with it. I recommend the following tutorial:
http://mywiki.wooledge.org/BashGuide
In addition to adding new packages to our repertoire, we also need
help with the existing packages.
If you follow the instructions to become a packager, you will come to
a stage where you need to find a sponsor. Let me know if/when that
happens.
Cheers,
Orcan
> > A little bit more information would be great. What applications do you >
use? Are you running jack for them? With what parameters? (ie: frames > per period,
periods per buffer, sampling rate, etc). What soundcard do > you use? Are you really
loading the machine when testing?> > And with the same conditions what kind of
problem did you see in the > regular Fedora 15 kernel?> > -- Fernando
Fernando,
I usually try to get 5ms or less of latency with 41000 smaple rate and 64 frames/period
and 2 periods/buffer.I do use JACK and I usually limit my self to use JACK as a guitar
effects processor. I think it will also work fine with a recording app like qtractor as
well. Actaully I was getting super low latency with the liunxDSP reverb effect. About
1.667ms believe it or not :) Here is a link to the patch and the kernel to patch against
. I think this is a better alternative b/c it does
not require any c group privileges. Please feel free to try it and let me know what you
thought. The maintainer of the patch can be found on OFTC at #ck. Btw I get freezes with
the ccrma F14 kerenel-rt. Is this normal?
Cheers guys,
Bill