Re: x86_64 problem - solved

On Sun, Jun 11, 2006 at 08:00:07PM +0100, John Rigg wrote:
> On Sun, Jun 11, 2006 at 06:39:42PM +0100, John Rigg wrote:
> > I just compiled jamin-0.95.0 after I found that the Debian-packaged
> > version (in Debian testing) hangs for 20 or 30 seconds with a blank
> > window on start up.
> > The compiled version does exactly the same. There's also something
> > strange happening in the xruns display, again in both versions.
> > The count keeps increasing even when there's no audio being processed.
> 
> The GUI hang disappeared when I recompiled with --disable-osc.
> The climbing xrun count remains.

The xruns stopped when I started jackd with only one sound-card.
For recording I use three M-Audio Delta 1010s with ALSA pcm_multi
plugin to give 24 inputs and outputs. Even with jackd running at
-p2048 (max I can use without a segfault) jamin shows xruns with
multiple cards.
If I just use hw:0 I can get down to -p32 without xruns (at least when
jamin is idling).

Something else I notice is that with pcm_multi the CPU load is about
24% when jamin is idling (and doesn't change much when processing
audio).
Just using hw:0 reduces CPU load to 2.5% when idling. Obviously
I need to run jackd with only one sound card when mastering.

John