On Wed, 2008-01-23 at 16:44 +0100, Florent Berthaut wrote: > Florent Berthaut a écrit : > > Florent Berthaut a écrit : > > > Hartmut Noack a écrit : > > > > -----BEGIN PGP SIGNED MESSAGE----- > > > > Hash: SHA1 > > > > Florent Berthaut schrieb: > > > > > Fernando Lopez-Lezcano a écrit : > > > > > > > > > > > A more basic question... what parameters are you using when you start > > > > > > jackd? > > > > > > > > > > > .jackdrc: > > > > > > > > > > /usr/bin/jackd -R -P70 -t1000 -u -dalsa -r44100 -p64 -n2 -D -Chw:0,1 > > > > > -Phw:0,0 -S -i2 -o2 > > > > > > > > USB-Devices often perform much better with -n3. Furthermore I would try > > > > to eliminate any flag, that is not absolutely needed such as: > > > > > > > > /usr/bin/jackd -R -dhw:1 -dalsa -r44100 -p64 -n3 > > > > > > > > BTW: this would compute to around 4 ms latency - is that good enough for > > > > you? > > > > > > Okay, i had forgot to turn off the system "bips" and esd (it > > > reduced the number of xruns) > > > And yep with -n3 i 've got even less xruns and it seems they're > > > not audible. > > > I don't know if the latency is low enough though, i'll test this > > > evening with my drum pads. > > > > > > Thanks everyone , it's really great to get so much help so > > > quickly. > > > > > Argh, actually i still have audible xruns. And i don't think i'd be > > able to play correctly with a higher latency anyway... > > Think i'll have to get back to ubuntu studio ... :( > > Actually after a reboot and some more tweakings, things have been > running without a xrun for an hour now, even with periods/buffer=2. > > So finally, i'll stay with planet ccrma ;) You might want to try the 2.6.22.x based kernel for f8 as stated somewhere else in the thread. In my experience it has better performance latency-wise. What other tweakings did you do? -- Fernando _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
