Hi all, Just an update. I compiled my own rt kernel following the "system configuration" guide http://wiki.linuxaudio.org/wiki/system_configuration#the_kernel I've used the linux-3.2.35 kernel with the 3.2.35-rt52 patch compiled against the .config of the latest low-latency kernel available from 13.04 repo. All seems working SO FAR better now on my machine. I have no problem running jack at 44100/128/2 (5.8 ms latency) just a couple of xrun in 30 mins of session. Disabling pulseaudio i can improve the situation even more...
For the moment i'm really satisfied. I've got the deb files if someone needs it. Nicola On Tue, 2013-07-30 at 00:35 +0100, nicola.di.marzo @vodafone.it wrote: > Thanks Ralf for the suggestions. > > > Tomorrow i will experiment a little bit. > > One strange thing that i don't understand is why does still compare > the webcam (on the bus 2) in lsusb even if i blacklisted the uvcvideo > e videodev drivers? > > > I also found a very interesting discussion about rtirq made on LAU > http://linux-audio.4202.n7.nabble.com/Re-Issue-with-the-priority-of-the-sound-cards-using-rtirq-td40952i20.html > > > Cheers > > Nicola > > > > 2013/7/29 Ralf Mardorf <ralf.mard...@alice-dsl.net> > ninu@ninu-HPg6:~$ service rtirq status > > PID CLS RTPRIO NI PRI %CPU STAT COMMAND > 66 FF 90 - 130 0.0 S irq/8-rtc0 > 62 FF 80 - 120 0.3 S irq/16-ehci_hcd > 63 FF 79 - 119 0.8 S irq/21-ehci_hcd > 65 FF 75 - 115 0.0 S irq/1-i8042 > 64 FF 74 - 114 0.0 S irq/12-i8042 > 35 FF 50 - 90 0.0 S irq/9-acpi > 189 FF 50 - 90 0.0 S irq/41-rtsx_pci > 217 FF 50 - 90 0.3 S irq/42-ahci > 424 FF 50 - 90 0.0 S irq/43-mei > 620 FF 50 - 90 0.4 S irq/16-ath9k > 742 FF 50 - 90 0.0 S irq/44-i915 > 1377 FF 50 - 90 0.0 S irq/40-eth0 > 3 TS - 0 19 0.2 S ksoftirqd/0 > 14 TS - 0 19 0.1 S ksoftirqd/1 > 19 TS - 0 19 0.0 S ksoftirqd/2 > 24 TS - 0 19 0.0 S ksoftirqd/3 > > Unbind ehci_hcd with irq 16 and use ehci_hcd with irq 21 for > the USB > sound device. Disabling WLAN might be useful too, even when it > doesn't > share the irq. > > > http://wiki.linuxaudio.org/wiki/system_configuration#solve_irq_conflict_by_unbinding_devices > > Or at least take care that the used USB slot is head of the > USB slots, > > RTIRQ_NAME_LIST="rtc snd usb i8042" > > instead of "usb" add the number "usb1" or similar, ask Rui, if > it > shouldn't be described by > > http://wiki.linuxaudio.org/wiki/system_configuration#rtirq > > Rui Nuno Capela > rncbc at rncbc dot org > > > -- > Ubuntu-Studio-users mailing list > Ubuntu-Studio-users@lists.ubuntu.com > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users > > > -- ubuntu-studio-users mailing list ubuntu-studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
