[LAU] qjackctl-0.3.x and 49% cpu

[John Anderson]

On Tue, 2007-11-27 at 14:33 +0000, Rui Nuno Capela wrote:
> On Tue, November 27, 2007 12:10, John Anderson wrote:
> > I'm finding that qjackctl-0.3.0, 0.3.1 and 0.3.1a all use up 49% cpu. My
> > box is a CoreDuo, so that's probably 100% of one cpu.
> >
> > qjackctl-0.2.22 doesn't do this, so I've downgraded for now.
> >
> > If it's a bug, what can I do to help?
> >
> 
> symptoms are that right after jackd is started the first time, qjackctl
> starts eating 98% of a cpu, isn't it?

It also happens when I have an existing jackd running, and I start up
qjackctl.

> it's a known issue on some Qt4 incarnations, specially the debian based
> ones, iirc. it has been reported on at least one case that updating to a
> different libqt4 makes the issue go away.

I've just upgraded from qt-4.3.1 to qt-4.3.2, and the problem is still
there.

> unfortunately, i never caught that behavior reproduced on any of my
> opensuse 10.x boxes, nor in windows :o)

Makes it kinda hard to debug ;-|

I have a gentoo box, with qt-3.3.8 installed as well.

bye
John