26 Jul
2009
26 Jul
'09
7:33 p.m.
On Mon, 20 Jul 2009 23:03:36 +0000 (GMT)
Frank Kober <goemusic(a)yahoo.fr> wrote:
Playing a bit more with it I see that I traded in the disconnections/xruns for crackling
when the CPU load goes up a bit, so there was much wishful thinking when I last posted, I
also thought it was part of the bug fixes announced... On my system, which is an old
mono-proc 2.6 GHz this is actually not so painful, however on a friend's system
(bi-proc 1.6 GHz) the crackling already appeared with low-demanding sounds, and in that
case it wouldn't useful for doing recordings.
So let's hope the team finds a solution to this...indeed not much improvement to the
most serious problem until now.
Regards
Frank
--- En date de : Dim 19.7.09, Atte Andre Jensen <atte.jensen(a)gmail.com> a écrit :
> De: Atte Andre Jensen <atte.jensen(a)gmail.com>
> Objet: Re: [LAU] Heads Up! ZynAddSubFX
> À:
> Cc: linux-audio-user(a)lists.linuxaudio.org
> Date: Dimanche 19 Juillet 2009, 16h27
> Folderol wrote:
>
> > Paun N has just made a pre-release version 2.4.0
> available.
> > Now would be a good time to try it and stress test
> it!
>
> As far as I can see Paul N hasnt't developed anything, just
> wrapped the
> new teams changes in a release. Can anyone confirm this?
>
> At least there is no mention of the impelmentation of the
> realtime-safeness we're all waiting for. So it seems
> performance should
> be no better/worse than 1 month ago (that is if you've been
> tracking cvs)...
>
> --
> Atte
This is being very intensively worked on. There is a temporary fix,
which cures the defect completely, but partially returns to the RT
unsafe situation. I found it worth doing, for the sake of all the other
benefits.
In src/Output/JACKaudiooutput.cpp change the folowing lines:
===================================================================
if (!pthread_mutex_trylock(&jackmaster->mutex)) {
JACKhandlemidi(nframes);
jackmaster->GetAudioOutSamples(nframes,jack_get_sample_rate(jackclient),outl,outr);
pthread_mutex_unlock(&jackmaster->mutex);
} else {
memset(outl, 0, sizeof(jack_default_audio_sample_t) * nframes);
memset(outr, 0, sizeof(jack_default_audio_sample_t) * nframes);
}
===================================================================
to
=================================================================
pthread_mutex_trylock(&jackmaster->mutex);
jackmaster->GetAudioOutSamples(nframes,jack_get_sample_rate(jackclient),outl,outr);
pthread_mutex_unlock(&jackmaster->mutex);
=================================================================
Also, an annoying little detail is that all the controllers are enabled
by default except main volume (controller 7) which is, of course, the
one I *always* want!
The change below cures that, and I believe will be rolled into the next
mantenance release.
In src/Params/Controller.cpp
Change:
"volume.receive=0;"
To:
"volume.receive=1;"
--
Will J Godfrey
http://www.musically.me.uk