Jack O'Quin wrote: > Mark Knecht <markknecht@xxxxxxxxx> writes: > > >> 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. So -p8 -n2 qualifies as 'low latencies', right? ;-) > > >> 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. 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. > > >> 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. 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
