15 Feb
2006
15 Feb
'06
7:11 a.m.
i have yet add my user to audio group and i have modify
/etc/security/limits.conf too as it is explained in this page
(http://www.linuxquestions.org/questions/showthread.php?t=386921 )
my problems are not in recording audio or playing external midi
equipment but in playing soft-synth. for example if run the 3rd patch of
hexter (FatThinE.P.) at 32notes of poliphony or the patch "The master"
of LMMS i got a lot of xrun.
where can i download the -ck patchset?
thank you a lot.
emanuele
------------------------------------------------------------------------
Oggetto:
Re: [linux-audio-user] ingo molnar patch on mandriva's kernel
Da:
Dana Olson <dana(a)ubuntustudio.com>
Data:
Wed, 15 Feb 2006 04:30:05 -0500
A:
A list for linux audio users <linux-audio-user(a)music.columbia.edu>
A:
A list for linux audio users <linux-audio-user(a)music.columbia.edu>
On 2/15/06, emanuele ..:: www.rumoridifondo.com ::..
<emanuele(a)rumoridifondo.com> wrote:
if i try to recompile mandriva's kernel
multimedia i see that there's
the voice "processors type and features --> preemptible kernel". i think
it's not ingo molnar's complete preemtion patch because i don't manage
to have low latency with my daw even if i have an audiophile2496 which
should work at low latency.
so i would like to recompile my kernel multimedia with ingo molnar's patch.
is it possible to apply the patch to mandriva's kernel or i must
recompile an official kernel from kernel.org?
is ingo molnar's patch the only step i have to take to have a
low-latency kernel?
thank you
bye
emanuele
Ingo's patch works well for me. I have my doubts that you could
successfully apply his patch to the default Mandrake kernel. You could
try the -ck patchset, as IIRC, that's the one that Studio To Go! uses
and I assume it has Ingo's patch as part of it.
When to configure the kernel, you'll want the option "Complete Preemption."
Dana
------------------------------------------------------------------------
Oggetto:
Re: [linux-audio-user] ingo molnar patch on mandriva's kernel
Da:
Peder Hedlund <peder(a)musikhuset.org>
Data:
Wed, 15 Feb 2006 11:19:54 +0100 (CET)
A:
A list for linux audio users <linux-audio-user(a)music.columbia.edu>
A:
A list for linux audio users <linux-audio-user(a)music.columbia.edu>
On Wed, 15 Feb 2006, emanuele ..:: www.rumoridifondo.com ::.. wrote:
if i try to recompile mandriva's kernel
multimedia i see that there's
the voice "processors type and features --> preemptible kernel". i think
it's not ingo molnar's complete preemtion patch because i don't manage
to have low latency with my daw even if i have an audiophile2496 which
should work at low latency.
I'd go with the precompiled multimedia kernel.
I have an audiophile2496 as well and my AMD 2000+ has no problem with
low latency.
The trick though is to add yourself to the "audio" group.
As you can see in /etc/security/limits.conf those members have
realtime capabilities.
- Peder
15 Feb
15 Feb
7:46 a.m.
my problems are not in recording audio or playing
external midi
equipment but in playing soft-synth. for example if run the 3rd patch of
hexter (FatThinE.P.) at 32notes of poliphony or the patch "The master"
of LMMS i got a lot of xrun.
What kind of hardware do you have?
Have you set up Jack to use realtime? You should see a faint yellow
RT in the qjackctl window.
where can i download the -ck patchset?
It's here: http://members.optusnet.com.au/ckolivas/kernel/
but I doubt it'll patch cleanly against Mandrivas kernel.
I'd go for the latest 2.6.14 (think it's .6) and get the latest
Ingo patch for that kernel (2.6.15 requires a new udev so that
might not be the easiest kernel to get to work in Mandriva).
- Peder
2:24 p.m.
On Wed, 2006-02-15 at 12:46 +0100, Peder Hedlund wrote:
It's here:
http://members.optusnet.com.au/ckolivas/kernel/
but I doubt it'll patch cleanly against Mandrivas kernel.
I'd go for the latest 2.6.14 (think it's .6) and get the latest
Ingo patch for that kernel (2.6.15 requires a new udev so that
might not be the easiest kernel to get to work in Mandriva).
Um, the -rt patch and the -ck patch are mutually exclusive. You want
the -rt patch not the -ck patch.
Why are you building your own kernel, there should be precompiled -rt
kernel packages for every distro by now.
Lee
3:17 p.m.
On 15 February 2006 at 13:24, Lee Revell <rlrevell(a)joe-job.com> wrote:
Um, the -rt patch and the -ck patch are mutually
exclusive. You want
the -rt patch not the -ck patch.
Why are you building your own kernel, there should be precompiled -rt
kernel packages for every distro by now.
I'm running Mandrake 10.1 on my current music machine, and Mandriva
2006.0 on the machine I'll use for music in the future. Those
machines run Mandr* kernel versions 2.6.7-1.mm_3kc.7mdk-i686-up-4GB
and 2.6.12-12mdksmp, respectively. In the /boot/config* files of
those machines I see this:
CONFIG_SECURITY_REALTIME=m
for some kernels, namely the "mm" optional kernels. Is this enough
to conclude that those kernels make use of the -rt patch? If not,
then I'm having one heck of a time finding -rt + Mandrake/Mandriva
info on the web. Any pointers would be appreciated. For what it's
worth, I'm getting pretty good music performance with ardour & jack
on the 2.6.7 machine. I haven't tried yet with the 2.6.12 machine.
Is there a kernel version that begins to include the -rt patch by
default? If so, what's the oldest version like that?
Thanks much...
--
Kevin
7:28 p.m.
New subject: [linux-audio-user] Re: ingo molnar patch on mandriva's kernel
On 2/16/06, Kevin Cosgrove <kevinc(a)doink.com> wrote:
On 15 February 2006 at 13:24, Lee Revell <rlrevell(a)joe-job.com> wrote:
I use mandriva 2006 and a self compiled rt kernel. Though currently I
can't get the RT kernel to run well on my hardware (x86_64) so i'm
stuck with the MM kernels. I can get quite decent latency though.
Loki
Um, the -rt patch and the -ck patch are mutually
exclusive. You want
the -rt patch not the -ck patch.
Why are you building your own kernel, there should be precompiled -rt
kernel packages for every distro by now.
I'm running Mandrake 10.1 on my current music machine, and Mandriva
2006.0 on the machine I'll use for music in the future. Those
machines run Mandr* kernel versions 2.6.7-1.mm_3kc.7mdk-i686-up-4GB
and 2.6.12-12mdksmp, respectively. In the /boot/config* files of
those machines I see this:
CONFIG_SECURITY_REALTIME=m
for some kernels, namely the "mm" optional kernels. Is this enough
to conclude that those kernels make use of the -rt patch? If not,
then I'm having one heck of a time finding -rt + Mandrake/Mandriva
info on the web. Any pointers would be appreciated. For what it's
worth, I'm getting pretty good music performance with ardour & jack
on the 2.6.7 machine. I haven't tried yet with the 2.6.12 machine.
Is there a kernel version that begins to include the -rt patch by
default? If so, what's the oldest version like that?
Thanks much...
--
Kevin
7:36 p.m.
New subject: [linux-audio-user] Re: ingo molnar patch on mandriva's kernel
On 2/16/06, Loki Davison <loki.davison(a)gmail.com> wrote:
On 2/16/06, Kevin Cosgrove <kevinc(a)doink.com>
wrote:
replying to myself..... you need to compile schedutils from source, no
package seems to exist.
Loki
On 15 February 2006 at 13:24, Lee Revell <rlrevell(a)joe-job.com> wrote:
I use mandriva 2006 and a self compiled rt kernel. Though currently I
can't get the RT kernel to run well on my hardware (x86_64) so i'm
stuck with the MM kernels. I can get quite decent latency though.
Loki
Um, the -rt patch and the -ck patch are mutually
exclusive. You want
the -rt patch not the -ck patch.
Why are you building your own kernel, there should be precompiled -rt
kernel packages for every distro by now.
I'm running Mandrake 10.1 on my current music machine, and Mandriva
2006.0 on the machine I'll use for music in the future. Those
machines run Mandr* kernel versions 2.6.7-1.mm_3kc.7mdk-i686-up-4GB
and 2.6.12-12mdksmp, respectively. In the /boot/config* files of
those machines I see this:
CONFIG_SECURITY_REALTIME=m
for some kernels, namely the "mm" optional kernels. Is this enough
to conclude that those kernels make use of the -rt patch? If not,
then I'm having one heck of a time finding -rt + Mandrake/Mandriva
info on the web. Any pointers would be appreciated. For what it's
worth, I'm getting pretty good music performance with ardour & jack
on the 2.6.7 machine. I haven't tried yet with the 2.6.12 machine.
Is there a kernel version that begins to include the -rt patch by
default? If so, what's the oldest version like that?
Thanks much...
--
Kevin
7:40 p.m.
New subject: [linux-audio-user] Re: ingo molnar patch on mandriva's kernel
On 16 February 2006 at 10:28, Loki Davison <loki.davison(a)gmail.com> wrote:
I use mandriva 2006 and a self compiled rt kernel.
Though
currently I can't get the RT kernel to run well on my hardware
(x86_64) so i'm stuck with the MM kernels. I can get quite
decent latency though.
My MDV2006 machine is also x86_64. In my case Athlon dual-core,
4400+ I just reinstalled it two weeks ago, upgrading to the
December Club 2006 edition. I haven't moved any of my music
gear to it yet, wanting to prove the machine functional first.
I suspect that I'll run into the dual-core clock source timing
issue, where everything will work fine for a while, then at
random times the machine will spew xruns like mad. This machine
runs jack 0.100 and a 2.6.12 kernel. I don't think either of
those works around the dual-core bug yet. Although I've heard
that the jack folks are trying to get that to work.
It took a bit of work to make my Celeron system work nicely for
audio. It's running Mandrake 10.1. What advice can you give us
on setting up a 64-bit Makdriva machine?
Thanks....
--
Kevin
25 Feb
25 Feb
2:32 a.m.
New subject: [linux-audio-user] Re: ingo molnar patch on mandriva's kernel
On 2/16/06, Kevin Cosgrove <kevinc(a)doink.com> wrote:
On 16 February 2006 at 10:28, Loki Davison <loki.davison(a)gmail.com> wrote:
Argg, missed this message. Though really i don't have a lot of useful
input. Be afraid. Be very afraid. I can't get this machine to perform
well using the RT kernel. Apart from that standard optimisation stuff
works fine. Lots of stuff needs to be compiled as packages are pretty
limited, though MDE has a lot more stuff for x86_64 now than a few
months ago. I haven't run into any programs that just wont work on 64
though. Some stuff requires quite a lot of makefile hacking though. My
CFLAGS go like export CFLAGS="-fPIC -march=athlon64 -mtune=athlon64
-msse2 -mfpmath=sse -O3 -ftree-vectorize"
I'm not sure if ardour build bug is fixed mantis says it's not, but on
mandriva the scons file requires a small change adding the arch flags
to the link flags, otherwise the linker trys to link against no
existant 32 bit libs. Apart from that i don't have any hints, i'd love
to here some though.
Loki
I use mandriva 2006 and a self compiled rt
kernel. Though
currently I can't get the RT kernel to run well on my hardware
(x86_64) so i'm stuck with the MM kernels. I can get quite
decent latency though.
My MDV2006 machine is also x86_64. In my case Athlon dual-core,
4400+ I just reinstalled it two weeks ago, upgrading to the
December Club 2006 edition. I haven't moved any of my music
gear to it yet, wanting to prove the machine functional first.
I suspect that I'll run into the dual-core clock source timing
issue, where everything will work fine for a while, then at
random times the machine will spew xruns like mad. This machine
runs jack 0.100 and a 2.6.12 kernel. I don't think either of
those works around the dual-core bug yet. Although I've heard
that the jack folks are trying to get that to work.
It took a bit of work to make my Celeron system work nicely for
audio. It's running Mandrake 10.1. What advice can you give us
on setting up a 64-bit Makdriva machine?
Thanks....
--
Kevin
3:13 a.m.
New subject: [linux-audio-user] Re: ingo molnar patch on mandriva's kernel
On 25 February 2006 at 17:32, "Loki Davison" <loki.davison(a)gmail.com>
wrote:
Argg, missed this message. Though really i don't
have a lot of useful
input. Be afraid. Be very afraid. I can't get this machine to perform
well using the RT kernel. Apart from that standard optimisation stuff
works fine. Lots of stuff needs to be compiled as packages are pretty
limited, though MDE has a lot more stuff for x86_64 now than a few
months ago. I haven't run into any programs that just wont work on 64
though. Some stuff requires quite a lot of makefile hacking though. My
CFLAGS go like export CFLAGS=3D"-fPIC -march=3Dathlon64 -mtune=3Dathlon64
-msse2 -mfpmath=3Dsse -O3 -ftree-vectorize"
I'm not sure if ardour build bug is fixed mantis says it's not, but on
mandriva the scons file requires a small change adding the arch flags
to the link flags, otherwise the linker trys to link against no
existant 32 bit libs. Apart from that i don't have any hints, i'd love
to here some though.
Someone (Lee?) mentioned that the jack timing issue can be fixed
using the "clockfix" CVS branch of jack. I grabbed that, and it
compiled fine. I haven't done anything else with it yet. But, I did
give my drum tracks to our guitar player, ardour recorded drumtracks.
Go ardour! Go open source audio+music software!
Cheers...
--
Kevin
6991
days inactive
7001
days old
linux-audio-user@lists.linuxaudio.org
8 comments
5 participants
participants (5)
-
emanuele ..:: www.rumoridifondo.com ::.. -
Kevin Cosgrove -
Lee Revell -
Loki Davison -
Peder Hedlund