On 07/02/2013 08:27 PM, Robin Gareus wrote:
On 07/02/2013 07:49 PM, Harry van Haaren wrote:
On Tue, Jul 2, 2013 at 5:53 PM, Fero Kiraly
<fero.kiraly(a)gmail.com> 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)
Hi Robin,
So with and USB2.0 audio interface like the 181VSL using -n2 yields a
stable setup too, no need anymore to use -n3?
* 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.
I have yet to encounter a BIOS that has these options.
Regards,
Jeremy