-----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?

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.

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 ;)

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 ;)