On 07/02/2013 07:49 PM, Harry van Haaren wrote: > On Tue, Jul 2, 2013 at 5:53 PM, Fero Kiraly <fero.kiraly@xxxxxxxxx> wrote: >> I have some troubles - read xruns - with this setup: > There's a lot more to removing Xruns from a system than just the kernel and > JACK settings (although they are very important :) * linux 3.2.35-2 PREEMPT RT (debian's RT kernel recompiled with VSL1818 clock selector fix added) * jackd 1.9.10 (git) * Rui's rtirq script * jackd with -p64 -n2 (actually jackdbus) * presonus 1818VSL -> very reliable no x-runs > Known things that need to be done: > -Interrupt requests of your hardware must be prioritized (rtirq script > helps here) > -Interrupt thread handlers (on RT kernel) must be prioritized > -Thread priorities must be checked for JACK itself +1, +1, +1 > Some other things to look into are: > -CPU scaling (causes Xruns here, although others say it works fine) no problem here w/freq scaling. I have disabled C1E halt states and EIST in the Bios, though. > -WiFi (must be disabled here: "iwconfig wlan0 txpower off", not just > disconnected) Nor does wifi + networkmanager cause issues here. but in either case the 1818VSL here is on a dedicated hardware IRQ - not shared with any other devices. > -Graphics chip drivers (I'm using a standard xf86-video driver for my ATI > HD2400XT) Intel graphics here. 2c, robin _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
