[LAD] JACK on Raspberry Pi

Parisson lists at parisson.com
Fri Sep 14 13:40:47 UTC 2012

On 14/09/2012 14:42, Gabriel M. Beddingfield wrote:
> On 09/14/2012 05:39 AM, Parisson wrote:
>> Hi!
>> I'm trying to get JACK working on this great tiny box:
>> pi at raspberrypi ~ $ jackd -dalsa
>> jackdmp 1.9.9
>> Copyright 2001-2005 Paul Davis and others.
>> Copyright 2004-2012 Grame.
>> jackdmp comes with ABSOLUTELY NO WARRANTY
>> This is free software, and you are welcome to redistribute it
>> under certain conditions; see the file COPYING for details
>> JACK server starting in realtime mode with priority 10
>> Cannot lock down 82274202 byte memory area (Cannot allocate memory)
>> Bus error
> When you built Jack2... it looks like you enabled performance tracing. When you
> do this it has to allocate a Really Big ringbuffer in memory.
> To fix it -- disable this at compile time.

I'm looking for the right option in the waf/configure scripts, but not finding it..

any idea ?

>> As ALSA is OK (i.e. aplay is playing good) and RAM=192M, is there any JACK
>> parameter I could tune in to reduce the memory size lock?
> Yeah, sucking up half your memory will probably always fail. :-)

Indeed! :)


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