14 Feb
2016
14 Feb
'16
6:19 p.m.
On Sun, 14 Feb 2016 11:05:30 -0500, jonetsu(a)teksavvy.com wrote:
The system runs 3.13.0-24-generic (Linux Mint 17
original). The
software management tool shows a same lowlatency kernel, so that's OK.
Install this kernel. It might be needed to add 'threadirqs' to the
grub.cfg /boot/vmlinuz line. I don't know when it became the default
for the lowlatency kernel, nowadays it's not required anymore.
Then follow Len's advices:
On Sat, 13 Feb 2016 17:04:45 -0800 (PST), Len Ovens wrote:
mv /etc/security/limits.d/audio.conf.disabled
/etc/security/limits.d/audio.conf
The defaults of Ubuntu might differ to the settings recommended here:
"@realtime - rtprio 99
@realtime - memlock unlimited" -
http://www.jackaudio.org/faq/linux_rt_config.html
Consider to edit the values to the above defaults, resp. to
@audio - rtprio 99
@audio - memlock unlimited
Run
id
if there's no group (audio) shown, you need to add the user to this
group.
install rtirq.
As you are running a delta1010 (I think), sudo
edit /etc/default/rtirq... the line that says:
RTIRQ_NAME_LIST="something something"
to:
RTIRQ_NAME_LIST="snd_ice1712"
Reboot and after rebooting run
/etc/init.d/rtirq status
and post the output here, perhaps you need to unbind one ore the other
thingy.
Do change your CPU governor from OnDemand to
Performance.
To see what governor you are using run
cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
to set the governor to performance run
echo performance|sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
Do find out how to change "swappiness" to 10
rather than 60 so the
kernel doesn't start preemptive swapping even though it is using less
than half your RAM
I don't know if this is needed.
Regards,
Ralf