6 Oct
2004
6 Oct
'04
6:31 p.m.
Jack O'Quin wrote:
I had Ardour on the machine already so I fired it up. It's running fine
playing 'Drums on Demand' loops which I very quickly imported into a new
Ardour session. No xruns in the last 20 minutes, although this time I'm
using QJC which doesn't seem to let me start any faster than -p64. I can
live with sub 3mS. (for now...)
All this with updatedb running in the background. This could make me
heady, if it holds up. Much testing needed.
And to you to for doing the realtim-lsm stuff. One thing I am seeing
which I don't quite understand is with realtime-lsm loaded it seems that
apps default to somewhere other than my home account the first time I
open a file menu. They are either going to / or /root. Not sure if
that's by design or some sort of limitation, but it seems a bit off to me.
Thanks,
Mark
Mark Knecht <markknecht(a)gmail.com> writes:
So -p8 -n2 qualifies as 'low latencies', right? ;-)
In terms of better testing I now need to
concentrate on finding an
application that run without creating xruns within the application
itself. At higher latency values (p=256 for instance) alsaplayer -r -o
jack runs pretty well, but as I move to lower latencies I find that
alsaplayer deterministically creates xruns at the transistion between
every song on a CD. I also tried alsaplayer playing wave files from
disk, but I see xruns as it goes from one file to the next also.
I want to try using chrt to see if alsaplayer is really getting
real-time access, etc. Maybe there are things still not right with the
way I'm running it on my box.
I sometimes see problems with alsaplayer at low latencies, too.
Generally below -p128 or so. Is there any other simple app that could play a
wave file from, for
instance, memory without this sort of problem?
I've had good luck with hydrogen. Play one of the demo drum patterns. So, the good news is my Gentoo system is not
broken, and that I've
hopefully learned a bit and contributed just a little bit more along
the way. That said I still have a long ways to go.
Good work.