Re: [Jack-Devel] jackd2+ardour3 - tracking down "JackActivationCount::Signal value = 0 ref = INT"

Le 15 juil. 2011 à 17:06, Robin Gareus a écrit :

> [..]
> 
>>> long story short: it was not in synchronous mode when the errors 
>>> happened and I can reproduce the JackActivationCount by + running
>>> in async mode + using lots of DSP-load
>> 
>> Ok, this makes much more sense!
>> 
>>> 
>>> But why are these messages printed out by default? Shouldn't
>>> signaling an x-run be enough?
>> 
>> They are still not "strict XRun": in asynchronous mode XRuns are
>> detected by the server which just checks that all clients have be run
>> previous cycle. It then print something like:
>> 
>> "JackEngine::XRun : client = XXX was not run: state = 2"
>> 
>> Don't you see there kind of messages along the
>> "JackActivationCount...." ones?
> 
> yes.
> 
> jackd verbose log:
> JackEngine::XRun: client = ardour was not run: state = 2
> JackAudioDriver::ProcessGraphAsyncMaster: Process error
> JackEngine::XRun: client = ardour was not run: state = 2
> JackAudioDriver::ProcessGraphAsyncMaster: Process error
> 
> ardour log:
> [ERROR]: JACK: JackActivationCount::Signal value = 0 ref = 3
> [ERROR]: JACK: JackActivationCount::Signal value = 0 ref = 3

But basically you are going to get *real* XRun error message in this case right?

> 
> 
>>> IMHO these msgs should only be generated in verbose mode, because
>>> printing those messages just makes things worse: more system load
>>> due to logging, etc. -> even more messages.
>> 
>> OK this can be done quite easily...
> 
> Good!
> 
> This is only really relevant when DSP load is ~ 85-95%.

So I can make "JackActivationCount" report in verbose mode only, but we agree that there still will be  XRun error message  right?
> 
> 
> 
> 
>>> [..]
>> Yes -S for "synchronous" is a server setting. It can actually be used
>> with different kind of backend.
> 
> Well, I do launch jackdbus and then call
>    jack_control eps sync true
> _before_ starting the engine. There's no "-S" parameter involved.
> 
> robin

Ask Nedko?

Stéphane 

1310748118.17053_0.ltw:2,a <A47574E1-B6BD-4FAE-B12D-27D346611D93 at grame dot fr>