[LAU] OT: what is happening with RT kernel development?

[Kaj Ailomaa]

On Sat, 30 Mar 2013 23:33:16 +0100, Brent Busby <brent at keycorner.org>  
wrote:

> On Fri, 29 Mar 2013, Kaj Ailomaa wrote:
>
>> As long as you are not doing software monitoring (i.e. listening to  
>> what you are recording through Ardour, while recording it), you don't  
>> need low latency at all, and might not need anything beyond  
>> linux-generic.
>
> Is this true in all cases, even when using plugins and soft-samplers?  
> What about if you're sending some of your audio outboard through a mixer  
> for processing in the hardware world?
>
> The reason I ask is because I am doing monitoring in hardware on an RME  
> Multiface II, but I'm also sending some channels out to a mixer and  
> bringing them back.  Also at the same time I'm using plugins.  I've got  
> my Jack latency setup to show up in QJackCtl as about 5ms, but it'd be  
> nicer for the computer if I could use a bigger buffer and not worry  
> about it.
>

As long as you are not doing anything live, using a higher buffer is  
recommended as it gives your machine more time to perform the various  
calculations needed for your plugins, etc.
If you pass audio out and in again, you will always get some latency, no  
matter which buffer setting. I haven't tried it and can't speak for  
timing, but if timing is off, you can always adjust that after you've  
recorded.