Re: [LAU] kernel changes -was - So what do you think sucks about Linux audio ?

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To: Harry van Haaren <harryhaaren@...>
Cc: linux-audio-user <linux-audio-user@...>
Date: Sunday, February 10, 2013 - 11:40 pm

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On Sun, Feb 10, 2013 at 12:25 PM, Harry van Haaren wrote:

> On Sun, Feb 10, 2013 at 5:34 PM, Louis Gorenfeld <

Yeah, but you're a ninja :)
I've been wanting to upgrade my kernel, but I'm a bit skeered of doing so
right now. I started working on my current project (PdCUDA) a few years
ago and am a few driver and kernel versions behind. I couldn't get rt
kernels to work with the nvidia proprietary driver (which is necessary for
me). Now, I understand that's been resolved in recent versions, but I'm
leery of making any big jumps in the kernel tree. Sounds dumb... but I'll
just wait for debian wheezy, which I presume will be a stable platform for
the next 2 years and update my system and try to tune for rt then.

> Notes:

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On Sun, Feb 10, 2013 at 12:25 PM, Harry van Haaren <harryhaare=
n@gmail.com
> wrote:
On Sun, Feb 10, 2013 at 5:34 PM, Louis Gorenfeld <louis.gorenfeld=
@gmail.com
> wrote:

devices don't perform as well on the 3.x series kernels compared to my =
old trusty 2.6.33,I used to be of the same =
opinion. Currently running a 3.6.11-rt kernel, and getting very low latenci=
es from it, on a modest 5 year old laptop.

We're talking 0.666 ms, while compiling a kernel, 0 xruns.Yeah, but you're a ninja :)=
I've been wanting to upgrade my kernel, but I'm a bit sk=
eered of doing so right now.=A0 I started working on my current project (Pd=
CUDA) a few years ago and am a few driver and kernel versions behind.=A0 I =
couldn't get rt kernels to work with the nvidia proprietary driver (whi=
ch is necessary for me).=A0 Now, I understand that's been resolved in r=
ecent versions, but I'm leery of making any big jumps in the kernel tre=
e.=A0 Sounds dumb... but I'll just wait for debian wheezy, which I pres=
ume will be a stable platform for the next 2 years and update my system and=
try to tune for rt then.
=A0Notes:-logged in as root (yes yes, i know)-rtirq running on=
startup to fix interrupts
-wifi is a killer, turn it off (Thanks to Jeremy's LAC workshop on RT-i=
ng a system, I didn't know about it till then)
-cpu-scaling can cause xruns, cpupower frequency-set -g performance to run =
all cores at 100% all the time.-i kicked out bluetooth to be sure-a=
s few daemons as possible-there is no proprietary driver for the Ati HD=
2400XT integrated for the 3.x series kernel. Hence "normal" graph=
ics, no 3d acceleration

Details:Acer travelmate laptop: Intel Core2Duo 2.0 GhzArch linu=
x based system: Linux audio 3.6.11-rt25-1-rt #1 SMP PREEMPT RT Tue Dec 25 0=
0:18:17 CET 2012 x86_64 GNU/LinuxSoundcards: RME Multiface II, running =
trough PCMCIA adapter. Also have an Echo Indigo DJ card, PCMCIA too.

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Messages in current thread:
Re: [LAU] So what do you think sucks about Linux audio ?, shane richards, (Fri Feb 8, 9:17 pm)
Re: [LAU] So what do you think sucks about Linux audio ?, Chris Bannister, (Sun Feb 10, 2:36 am)
Re: [LAU] So what do you think sucks about Linux audio ?, hermann meyer, (Sun Feb 10, 5:38 am)
Re: [LAU] So what do you think sucks about Linux audio ?, hermann meyer, (Sun Feb 10, 6:05 am)
Re: [LAU] So what do you think sucks about Linux audio ?, Ralf Mardorf, (Sun Feb 10, 11:19 am)
Re: [LAU] So what do you think sucks about Linux audio ?, Dan MacDonald, (Sun Feb 10, 9:33 am)
Re: [LAU] So what do you think sucks about Linux audio ?, Ricardus Vincente, (Sun Feb 10, 2:53 pm)
Re: [LAU] So what do you think sucks about Linux audio ?, Raffaele Morelli, (Sun Feb 10, 3:53 pm)
Re: [LAU] So what do you think sucks about Linux audio ?, Louis Gorenfeld, (Sun Feb 10, 2:45 pm)
Re: [LAU] So what do you think sucks about Linux audio ?, Ralf Mardorf, (Sun Feb 10, 12:24 pm)
Re: [LAU] So what do you think sucks about Linux audio ?, Alexandre Prokoudine, (Sun Feb 10, 10:33 am)
Re: [LAU] kernel changes, Len Ovens, (Sun Feb 10, 10:33 pm)
Re: [LAU] kernel changes, Folderol, (Tue Feb 12, 2:57 pm)
Re: [LAU] kernel changes, Len Ovens, (Sun Feb 10, 6:09 pm)
Re: [LAU] kernel changes, Ralf Mardorf, (Sun Feb 10, 6:44 pm)
Re: [LAU] kernel changes, Len Ovens, (Sun Feb 10, 10:58 pm)
Re: [LAU] kernel changes, Paul Davis, (Sun Feb 10, 11:03 pm)
Re: [LAU] kernel changes, Len Ovens, (Mon Feb 11, 12:38 am)
Re: [LAU] kernel changes, Paul Davis, (Mon Feb 11, 1:05 am)
Re: [LAU] kernel changes, Len Ovens, (Tue Feb 12, 2:42 pm)
Re: [LAU] kernel changes, Ralf Mardorf, (Mon Feb 11, 2:17 am)
Re: [LAU] kernel changes -was - So what do you think sucks a..., Charles Z Henry, (Sun Feb 10, 11:40 pm)
Re: [LAU] kernel changes -was - So what do you think sucks a..., Harry van Haaren, (Mon Feb 11, 12:12 am)
Re: [LAU] kernel changes, Len Ovens, (Sun Feb 10, 5:59 pm)
Re: [LAU] kernel changes, Ralf Mardorf, (Sun Feb 10, 6:30 pm)
Re: [LAU] kernel changes, Len Ovens, (Sun Feb 10, 9:09 pm)
Re: [LAU] So what do you think sucks about Linux audio ?, Raffaele Morelli, (Sun Feb 10, 3:48 pm)