Re: [LAU] Performance problems.

On Thu, 22 May 2008 hollunder@email-addr-hidden wrote:

> On Thu, 22 May 2008 09:01:23 +0100 (BST)
> J M Needham <J.M.Needham@email-addr-hidden> wrote:
>
> > Dear all,
> >
> > So, I've just upgraded to Ubuntu HH, and I'm using the Linux
> > 2.6.24-17-rt #1 SMP PREEMPT RT kernel on a toshiba laptop with dual
> > core 2.6 GHz processors and 2G of ram, and an intel HDA
> >
> > I have compiled Ardour 2.4.1 from source with FREESOUND=1 as my only
> > option. My first problem is that it's using 74% of my CPU just sitting
> > there. [Anyone else find this?]
> >
> > I've checked that my system corresponds to this page
> > http://tapas.affenbande.org/wordpress/?page_id=40 (as this was how I
> > used to have it set up) and it corresponds, but I'm getting 5% CPU
> > usage from Jack just sitting doing nothing.
> >
> > Anyone got any ideas?
>
> The 5% could be normal if you have very low latency settings, since the
> lower the latency the higher the cpu usage, even when idle.
> Ardour chewing 74% cpu on the other hand is far too much, it should use
> nearly nothing. I haven't compiled 2.4.1, Version 2.3 that ships with
> hardy appears to work fine here.

Ok. I've got 4.~ ms of latency, so that could explain the 5%. I think
therefore we can assume that my build of ardour is broken.

Thanks for that.

Jonty

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Received on Thu May 22 16:15:01 2008