CuBox Project X

[Kunter]

edit: tip for Kunter and any future owners of the Cubox. The real time tuning settings (http://mubox.voyage.hk/realtime_kernel_cuboxi) are not persistent and thus lost after a reboot. I created a script and call that from rc.local to reapply these settings after every reboot.

Code:

for IRQ in /proc/irq/* ; do echo 1 > $IRQ/smp_affinity ; done
for PID in $(pgrep ci_hdrc) ; do taskset -pc 1 $PID ; done
echo 2 > /proc/irq/72/smp_affinity
echo 2 > /proc/irq/75/smp_affinity
taskset -pca 2,3 $(pgrep mpd)
chrt -f -p 49 $(pgrep cifsd)
ps -eLo pid,group,lwp,rtprio,priority,time,cmd | egrep "cifsd"

For those who are interested...

the above set of tricks work (mostly) for Volumio as well... Volumio does not have a real time kernel, however you can still assign MPD and USB to specific cores. And it helps with the sound a lot. A LOT.

the useful commands to be executed are:

echo 2 > /proc/irq/72/smp_affinity
echo 2 > /proc/irq/75/smp_affinity
taskset -pca 2,3 $(pidof mpd)

run these at your convenience (as suggested above) and you will be in audio heaven.

Cheers

Kunter