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hollunder@gmx.at wrote:

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> On Thu, 26 Mar 2009 19:52:40 +0100

> Robin Gareus  wrote:

>

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>>

>> We've got a winner! 2.6.29-rt1

>>

>> I've just succeeded with a few tests: jackd realtime (64fpp with a USB

>> UA25) recording/playing Audio and MIDI with qtractor & qsynth and I

>> played a 32 channel ardour session - no xrun in sight!

>>

>> I know this is old news since 64studio already ships a 2.6.29

>> pre-release - However, I run a debian squeeze/sid and

>> 2.6.29-release-candidates were causing an OOPS on this system.

>>

>> As it turned out it was caused by "irqbalance"! It took me quite a

>> while to track down that the rt kernel is no longer compatible with

>> irqbalance (it works fine with 2.6.24-rt).

>>

>> Here's a debian package built for core2:

>> http://rg42.org/_media/wiki/kernel/linux-image-2.6.29-rt1_2.6.29-rt1-10....

>> and the corresponding .config file:

>> http://rg42.org/_media/wiki/kernel/config-2.6.29-rt1.txt

>>

>> kudos to the rt-linux devs.

>> have fun,

>> robin

>

> I compiled 2.6.29-rc8-rt4 yesterday and 2.6.29-rt1 today (my first self

> compiled kernels). 

Congrats. welcome to the club ;)
> I happen to have the same interface and it seems to

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> work well here so far, everything seems to work and misbehaving

> applications still produce xruns.

How do you define "misbehaving" ?!
I managed to crash ardour3 and that got me an xrun - but I've got no

complaints there ;)
> Thanks for the warning about irqbalance, I was about to try it..

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> (Is this the script by fernando lopez leczano or something else?)

It is not Rui's rtirq script. You should definitely get that:

http://www.rncbc.org/jack/rtirq-20090131.tar.gz
"irqbalance" is a different beast. By default all IRQs are handled by

the first CPU only. If you have a SMP system irqbalance can distribute

interrupt handling to all available CPUs.
robin

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