Probably a first question to ask is,
Does it happen for every preset?

For example, I think the first preset "Rodent Airlines" uses a lot of CPU (40% on my 3Ghz Pentium 4).  So, try some different presets, for example, start rakarrack with a preset that you know is low cpu.  This might help to narrow it down.

Another question, does it always happen on this machine?  Do you have jack started first, or do you start rakarrack without jack and let rakarrack start jack?


Does this happen with other jack programs, or only rakarrack?

Perhaps answering those questions will bring us closer.  Of course, using gdb may help to narrow the problem to something specific.

Ryan


On 05/08/2012 08:46 AM, Carlos sanchiavedraz wrote:
Hi rakarrakers.

I keep on testing Musix on various portable and not so powerful devices. I get this error (on a txt file using "2>some-error-file.txt") sometimes when enabling the FX processing on a UMPC[1]:

"
rakarrack 0.6.1 - Copyright (c) Josep Andreu - Ryan Billing - Douglas McClendon - Arnout Engelen
Try 'rakarrack --help' for command-line options.
cannot use real-time scheduling (FIFO at priority -4) [for thread -1267381392, from thread -1267381392] (22: Invalid argument)
"
I would like to know why and when this happens to see if I can stabilized the environment. I'm using it as an FX processor and live-looping system instead of a pedalboard.

Thanks in advance, as always.


[1] Ultra Mobile PC with this specs for the purpose

    CPU type: Intel Atom (Silverthorne)
    CPU speed: Z520, 1.33Ghz

--
Carlos sanchiavedraz
* Musix GNU+Linux
  http://www.musix.es
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