[LAU] A year of Linux Audio revisited - would like to know your oppinion

[Rui Nuno Capela]

Lee Revell wrote:
> On Dec 15, 2007 12:42 AM, Robert Persson <ireneshusband at gmail.com> wrote:
>> On my system, as well as the problem of clients being disconnected, jack
>> itself crashes a lot. I did not notice this problem until I started
>> using the SVN version. Jackd definitely gets realtime priority, albeit
>> using realtime-lsm (I didn't get very far with PAM). From what you have
>> said, this means that I must have a problem with configuration for the
>> hardware. I have an Audigy 2. Are there any weird settings I need to use
>> for this card to get jack running smoothly?
> 
> That's exactly what I would expect from an arbitrary SVN checkout.  Of
> course, it would be a great help to the developers if you could get
> core dumps from these crashes (do "ulimit -c unlimited" then launch
> JACK from a terminal).
> 

afaict, if Robert is using jack svn, most probably jackd is hanging and
gets killed by its own jack_watchdog. having a core dump might not help
much in that situation i'm afraid.

the problem still resides in jackd (bad) behavior to get stuck when it
tries to kick-out some client due to a probable timeout or even non-zero
process callback return value. haven't i told you before that it
suffices for a client process() callback to return a non-zero value to
let jackd crash itself? and there's a lot of jacks apps out there which
are still returning non-zero as a legal value, for self-shutdown for
instance. just let one of those get in or out from the jack graph and
kiss goodbye to your rock solid and stable jackd, bwaahahah :o)

this is happenning on jack svn for quite some time now (>= 0.105.x),
almost since early Spring'07 :)

cheers
-- 
rncbc aka Rui Nuno Capela
rncbc at rncbc.org