[LAU] clicks in sound when running dual core

Robert Jonsson spamatica at gmail.com
Fri Feb 6 15:46:23 EST 2009

Hi Chris,

Yes, I do recall the debacle. But, as you say, that should have been worked
around a long time ago already.

It would be interesting to know if anyone else has noticed anything similar?

For the moment I'm content running just one of the cores.. ;)


2009/2/6 Chris Cannam <cannam at all-day-breakfast.com>

> On Fri, Feb 6, 2009 at 8:18 PM, Robert Jonsson <spamatica at gmail.com>
> wrote:
> > Thinking back I realize that I stumbled on this problem on the last
> rebuild
> > some years ago but ended up running single core without investigating why
> > this was.
> The symptom sounds rather like the infamous old AMD64 non-monotonic
> clock resulting from clocks not being properly synchronised across
> cores.  But I had thought that workarounds in the kernel, JACK, or
> both had made this a non-issue for most systems installed in the last
> couple of years.  (I am quite sure that a workaround dedicated to
> solving specifically this problem was merged to JACK trunk quite a
> number of releases ago, and any contemporary JACK release will have
> it.)
> This page: http://www.sound-man.co.uk/linuxaudio/kernel.html refers to
> the problem.
> I realise I'm not offering any solution here, just pointing out that
> your problem sounds the same as this one.
> Chris
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