[ardour-dev] Latency: AGP vs PCI video card and XFS journalling vs not

[Jan Depner]

The problem with monitoring with effects is that the effects eat up a
good bit of processing power.  You could run the output of the card into
a mixer with either built-in effects or an effects processor hooked up.

Jan

On Mon, 2004-02-23 at 12:41, Eric wrote:
> I know I can do hardware monitoring and therefore set the sample size
> high, but I would like to be able to monitor with some effects.  Has
> anyone ever been able to do this at reasonable latency?
> 
> eric.
> 
> On Mon, Feb 23, 2004 at 07:30:22AM -0600, Jan Depner wrote:
> > On Mon, 2004-02-23 at 03:10, Tommi Sakari Uimonen wrote:
> > > 
> > > For recording purposes, "write as much as possible, as fast as possible",
> > > (so no reading other tracks at the same time, just writing) I found ext2
> > > to be fastest (ext3,reiserfs were included in the test), since it doesn't
> > > spend time journaling.
> > > 
> > 
> > With a Delta 66 you don't need a small sample size which helps with the
> > first part.  I have to disagree with the ext2 part.  Check out Mark
> > Knecht's filesystem tests on my page
> > (http://myweb.cableone.net/eviltwin69/Arcana.html).  He used Benno's
> > latency test for his comparison.  I use Reiser and I get fewer xruns
> > than I did with ext2 or ext3.
> > 
> > Jan
> > 
> > 
> 
> -- 
> http://ir.iit.edu/~ej
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