[ubuntu-studio-users] latency question

[Ralf Mardorf]

On Sun, 31 Jan 2016 21:31:54 +0100, Roy Damen wrote:
>1000 Hz? Will this make that much difference for the latency?

AFAIK it doesn't matter. IIRC audio and MIDI are independent from the
chosen HZ value, regarding some improvements. Keywords to search
linux audio websites could be TSC, HPET/HR timer, tickless. At least
RTC is removed from rtirq's default config.

[rocketmouse at archlinux ~]$ grep NO_HZ /mnt/moonstudio/boot/config-4.2.0-25-lowlatency 
CONFIG_NO_HZ_COMMON=y
CONFIG_NO_HZ_IDLE=y
# CONFIG_NO_HZ_FULL is not set
CONFIG_NO_HZ=y
[rocketmouse at archlinux ~]$ grep HRTIMER /mnt/moonstudio/boot/config-4.2.0-25-lowlatency 
CONFIG_SND_HRTIMER=m
CONFIG_SND_SEQ_HRTIMER_DEFAULT=y
[rocketmouse at archlinux ~]$ grep E_LIST /mnt/moonstudio/etc/default/rtirq 
# RTIRQ_NAME_LIST="rtc snd usb i8042" # old
RTIRQ_NAME_LIST="snd_hdsp snd_ice1"