Re: [LAU] Are RT-patches needed anymore? (Was Re: >= 2.6.27 RT ETA? )

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To: Cassiel <raffaele.morelli@...>
Cc: <linux-audio-user@...>, <nescivi@...>
Date: Tuesday, March 10, 2009 - 1:18 pm

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On Tue, Mar 10, 2009 at 4:06 PM, Cassiel wrote:

> generic or custom (rt patched) kernel?

For what it's worth, and i'm certainly not a kernel or linux expert by any
stretch of the imagination, I've just built (via the debian build method) an
RT kernel from vanilla, and Igno's patches, for 2.6.26-(rt16 build). As i
understand it, 2.6.26-rt8, and previous, had a problem with sound and midi.
I did read a discussion about this, in which a clever fellow had built a
patch to remedy the problems, and it was intimated that this patch would be
included in subsequent rt builds.

I don't know if this has happened, but here, on Debian 5 32bit, i'm running
jack2, with Alsa 1.0.19, 128-n3, and have no problems. No xruns, or glitches
so far. (The kernel is still warm from a few days ago).

I have a question related to this.

Is it possible to build a custom RT kenel using 2.6.29, that will work in
Lenny? Is there an incompatability with Glib, or anything else, that will
prevent this happening?

Alex.

--
Parchment Studios (It started as a joke...)

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On Tue, Mar 10, 2009 at 4:06 PM, Cassiel=
<raffae=
le.morelli@gmail.com
> wrote:
generic or custom (rt patched) kernel?r2009/3/10 nescivi <nescivi@gmail.com>

realtime priorities were handled through limits.conf, and I am running on t=
he
Debian kernel 2.6.26-1-amd64 on a Intel Core2 Duo, T7500 2.20 GHz. (It'=
s a
Lenovo Thinkpad T61).

The previous Debian kernel 2.6.24, did give me better results with JACK, bu=
t
had problem with the serial chip driver (the FTDI), at certain baudrates.

So yes, the few xruns were problematic, since my soundtrack was the only so=
und
that was going on, and I would really like to know how I could make this
whole setup a bit more robust.

The video capturing and the visualisation are certainly less time critical,=
as
I am only deriving control data from it, and/or using it to monitor. It is<=
br>
not projected out again.

sincerely,
Marije=A0
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@l=
ists.linuxaudio.org

http://lists.linuxaudio.org/mailman/listinfo/linux-audio-u=
ser
For what it's worth, and i'm certainly=
not a kernel or linux expert by any stretch of the imagination, I've j=
ust built (via the debian build method) an RT kernel from vanilla, and Igno=
's patches, for 2.6.26-(rt16 build). As i understand it, 2.6.26-rt8, an=
d previous, had a problem with sound and midi. I did read a discussion abou=
t this, in which a clever fellow had built a patch to remedy the problems, =
and it was intimated that this patch would be included in subsequent rt<=
number> builds.
I don't know if this has happened, but here, on Debian 5 32bit, i&#=
39;m running jack2, with Alsa 1.0.19, 128-n3, and have no problems. No xrun=
s, or glitches so far. (The kernel is still warm from a few days ago).
I have a question related to this.Is it possible to build a cus=
tom RT kenel using 2.6.29, that will work in Lenny? Is there an incompatabi=
lity with Glib, or anything else, that will prevent this happening?
Alex.-- Parchment Studios (It=
started as a joke...)

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Messages in current thread:
[LAU] &gt;= 2.6.27 RT ETA?, Ken Restivo, (Mon Jan 26, 9:24 am)
Re: [LAU] Are RT-patches needed anymore? (Was Re: &gt;= 2.6...., Fernando Lopez-Lezcano, (Thu Jan 29, 11:53 pm)
Re: [LAU] , nescivi, (Tue Mar 10, 12:57 pm)
Re: [LAU] Are RT-patches needed anymore? (Was Re: >= 2.6...., alex stone, (Tue Mar 10, 1:18 pm)
Re: [LAU] Are RT-patches needed anymore? (Was Re: &gt;= 2.6...., Tapani Sysimetsä, (Tue Mar 10, 2:21 pm)
Re: [LAU] , David Baron, (Tue Mar 10, 2:00 pm)
Re: [LAU] Are RT-patches needed anymore? (Was Re: &gt;= 2.6...., Fernando Lopez-Lezcano, (Fri Jan 30, 4:53 am)
Re: [LAU] Are RT-patches needed anymore? (Was Re: &gt;= 2.6...., Tapani Sysimetsä, (Tue Jan 27, 5:38 pm)
Re: [LAU] Are RT-patches needed anymore? (Was Re: &gt;= 2.6...., Atte André Jensen, (Wed Jan 28, 7:11 pm)
Re: [LAU] Are RT-patches needed anymore? (Was Re: &gt;= 2.6...., Jörn Nettingsmeier, (Tue Jan 27, 3:05 pm)
Re: [LAU] Are RT-patches needed anymore? (Was Re: &gt;= 2.6...., Jörn Nettingsmeier, (Sat Jan 31, 11:59 am)
Re: [LAU] Are RT-patches needed anymore? (Was Re: &gt;= 2.6...., Jörn Nettingsmeier, (Tue Jan 27, 3:16 pm)
Re: [LAU] &gt;= 2.6.27 RT ETA?, Fernando Lopez-Lezcano, (Mon Jan 26, 8:40 pm)
Re: [LAU] &gt;= 2.6.27 RT ETA?, Hector Centeno, (Mon Jan 26, 9:39 pm)
Re: [LAU] &gt;= 2.6.27 RT ETA?, Cassiel, (Mon Jan 26, 9:51 am)
Re: [LAU] &gt;= 2.6.27 RT ETA?, Ken Restivo, (Mon Jan 26, 9:57 am)