Re: [LAU] RT in Arch Linux

System tuning in a nut shell: + install linux-rt https://aur.archlinux.org/packages.php?ID=51360 + To make the most of it, since linux 2.6.39 you can include `threadirqs` in your kernel boot line. + Remember to install the package `rtirq` + include `rtirq` in your DAEMONS array in `/etc/rc.conf`. For example: DAEMONS=(dbus hal syslog-ng rtirq @alsa @wicd) + Add to `/etc/secutiry/limits.conf` @audio - rtprio 99 @audio - memlock unlimited + If you use firewire soundcards, include in your MODULES array in `/etc/rc.conf`: MODULES=(firewire-core firewire-ohci) + Add yourself to the `audio` group usermod -a -G audio **yourUserID** + Add to `/etc/sysctl.conf` vm.swappiness = 10 fs.inotify.max_user_watches = 524288 + Add to `/etc/udev/rules.d/40-hpet-permissions.rules` KERNEL=="rtc0", GROUP="audio" KERNEL=="hpet", GROUP="audio" + Set the cpufreq governor to `performance`. See the [ArchWiki article](https://wiki.archlinux.org/index.php/Cpufreq#Daemon) + To use ALSA applications with JACK (web browsers and other applications without JACK support) you can install the package `alsa-plugins` and add the following to `~/.asoundrc` # convert alsa API over jack API # use it with # % aplay foo.wav # use this as default pcm.!default { type plug slave { pcm "jack" } } ctl.mixer0 { type hw card 1 } # pcm type jack pcm.jack { type jack playback_ports { 0 system:playback_1 1 system:playback_2 } capture_ports { 0 system:capture_1 1 system:capture_2 } }