[LAU] options for hard real time kernel for raring 13.04

[Marco Donnarumma]

Thanks guys!

@Raffaele: that's great, didn't know there were more recent rt-kernels for
debian. I have a 32bit machine, so I'm going to try this one:
http://packages.debian.org/jessie/linux-image-3.10-2-rt-686-pae

I have an nvidia driver (sigh), I guess it's likely that rt-kernel is not
going to like it. I read I could patch some nvidia stuff into the
rt-kernel, but that's another story. I'll try this first.

@Emiliano: yes, I do set the governor to "performance" when I need it. I
also wondered, maybe it could also be a faulty firewire cable causing the
random freeze?

Is the D-Bus enabled an annoyance to low-latency processes?

thanks again,
cheers,
M




--
Marco Donnarumma
New Media + Sonic Arts Practitioner, Performer, Teacher, Director.
Embodied Audio-Visual Interaction Research Team.
Department of Computing, Goldsmiths University of London
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Portfolio: http://marcodonnarumma.com
Research: http://res.marcodonnarumma.com
Director: http://www.liveperformersmeeting.net


On Wed, Sep 11, 2013 at 12:26 PM, Emiliano Grilli <emiliano.grilli at gmail.com
> wrote:

> It may sound obvious, but: did you checked that your are using the
> "performance" governor for cpu frequency scaling?
>
> I found that using the "ondemand" governor can cause more xruns...
>
> I don't know mint but there should be a cpufreq-utils package that
> provides relevant utilities for this.
>
> HTH
> Ciao
> Il giorno 11/set/2013 10:53, "Marco Donnarumma" <devel at thesaddj.com> ha
> scritto:
>
>>  Hey all,
>>
>> I just switched to Mint Olivia 15 (based on Ubuntu Raring 13.04). I use
>> quite cpu-intensive puredata patches with processing of 2 live audio inputs
>> on a firewire soundcard through ffado and qjackctl (jack2).
>>
>> Although my machine runs a low-latency kernel and it has been configured
>> for pro audio (I use the realtimeConfigurationScan script), I still get
>> xruns and sometimes qjackctl randomly hangs up making the sound to stop
>> completely.
>>
>> Before, I used to work with ubuntu 10.04 and rt-kernel without a itch. Is
>> anybody still using a rt-kernel with the latest Mint or Ubuntu, or just
>> refining settings etc..?
>>
>> if a rt-kernel is the best option, should I patch mine, since it looks
>> like there are no packaged rt-kernels for Raring?
>> Can't access Abogani ppa, and KXS kernels are available up to Precise.
>>
>> thanks in advance for any hint, or suggestions about what to try!
>> best wishes,
>>
>> --
>> Marco Donnarumma
>> New Media + Sonic Arts Practitioner, Performer, Teacher, Director.
>> Embodied Audio-Visual Interaction Research Team.
>> Department of Computing, Goldsmiths University of London
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> Portfolio: http://marcodonnarumma.com
>> Research: http://res.marcodonnarumma.com
>> Director: http://www.liveperformersmeeting.net
>>
>> _______________________________________________
>> Linux-audio-user mailing list
>> Linux-audio-user at lists.linuxaudio.org
>> http://lists.linuxaudio.org/listinfo/linux-audio-user
>>
>>
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