[linux-audio-user] Ingo's RT patch: please tell this newbie the best jack settings

[Lee Revell]

On Fri, 2005-11-11 at 12:22 +0100, Florian Schmidt wrote:
> On Thu, 10 Nov 2005 20:10:20 -0500
> Lee Revell <rlrevell at joe-job.com> wrote:
> 
> > On Thu, 2005-11-10 at 17:05 -0800, thewade wrote:
> > > I am curious how to get PD running on my machine 
> > > processing complex patches but with a latency of 5.33 msec (128 frame 
> > > buffer size I think) or less. I would even settle fo 10msec (256) with 
> > > no XRUNS.
> > > 
> > 
> > You don't need the -rt kernel for that, the standard kernel will work.
> > 
> > Lee
> > 
> 
> Oh well, not for everyone. If you want to be sure and have no xrun
> whatsoever a -rt kernel is definetly the better choice imho (don't have
> data to back that up though)

I do have some data to back this up, I ran about 100 million samples
with 2.6.14 and the biggest latency I saw was ~0.6 ms.  For the buffer
sizes he wants to use 2.6.14 will work fine.  Of course you won't be
able to sustain quite as high a DSP load but given the problems people
are having with the -rt kernel on x64 it's worth investigating.

Lee