On 07/02/2013 07:49 PM, Harry van Haaren wrote:
> On Tue, Jul 2, 2013 at 5:53 PM, Fero Kiraly <fero.kiraly@email-addr-hidden> 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
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Received on Wed Jul 3 00:15:01 2013
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