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wiki:system_configuration [2020/03/17 21:15] – [The kernel] autostaticwiki:system_configuration [2020/06/08 11:36] – [The kernel] grammo
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 ===== How do I build a real-time audio workstation on Linux? ===== ===== How do I build a real-time audio workstation on Linux? =====
 +
 +The [[https://manual.ardour.org/setting-up-your-system/the-right-computer-system-for-digital-audio/|Ardour manual]] has a interesting introduction about getting the right computer system for digital audio. Below that article there is also a (somewhat Windows oriented) [[https://www.youtube.com/watch?v=GUsLLEkswzE| video]] by Richard Ames, which could be helpful to get a idea which things are involved for this topic. Summary: lots of things are involved for a well performing real-time audio workstation. It's not simply a matter of buying a computer with massive CPU and memory power, as the coming sections on this page shows.
 +
 +A good starting point for optimizing your system for real-time audio on GNU/Linux, is the QuickScan script below.
 ==== Preliminary ==== ==== Preliminary ====
  
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 This is only needed for so-called generic kernels, ie. standard kernels that are not tweaked for lowlatency performance. You can check if your kernel already includes this option with the following command: This is only needed for so-called generic kernels, ie. standard kernels that are not tweaked for lowlatency performance. You can check if your kernel already includes this option with the following command:
  
-  $ grep -e "CONFIG_IRQ_FORCED_THREADING=y" -e "CONFIG_PREEMPT=y" /boot/config-`uname -r`+  $ grep -e "CONFIG_IRQ_FORCED_THREADING=y" -e "CONFIG_PREEMPT_RT=y" /boot/config-`uname -r`
    
-If it returns ''CONFIG_IRQ_FORCED_THREADING=y'' and ''CONFIG_PREEMPT=y'' then your kernel is using IRQ threading and you don't have to proceed with the following steps. If it only returns ''CONFIG_IRQ_FORCED_THREADING=y'' you can add the ''threadirqs'' boot option as described below. If the command returns nothing you have a kernel that cannot use threaded IRQs.+If it returns ''CONFIG_IRQ_FORCED_THREADING=y'' and ''CONFIG_PREEMPT_RT=y'' then your kernel is using IRQ threading and you don't have to proceed with the following steps. If it only returns ''CONFIG_IRQ_FORCED_THREADING=y'' you can add the ''threadirqs'' boot option as described below. If the command returns nothing you have a kernel that cannot use threaded IRQs.
  
 Open ''/etc/default/grub'' with your favorite editor as root. Open ''/etc/default/grub'' with your favorite editor as root.
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 == Gentoo == == Gentoo ==
  
-RT kernels are available in the pro-audio overlay (http://proaudio.tuxfamily.org/wiki/index.php?title=Main_Page).+An audio overlay can be found here [[https://github.com/gentoo-audio/audio-overlay]].
  
 === Build your own real-time kernel === === Build your own real-time kernel ===
  
-If your distribution isn't any help, you can compile and install a real-time kernel manually. The examples assume building a RT kernel based on the 3.2 kernel version but they should generally apply fo other kernel versions too provided that there is a RT patchset available for the used kernel. +If your distribution isn't any help, you can compile and install a real-time kernel manually. The examples assume building a RT kernel based on the 4.8 kernel version but they should generally apply for other kernel versions too provided that there is a RT patchset available for the used kernel. 
  
 Install the necessary packages, on Debian and Ubuntu this is: Install the necessary packages, on Debian and Ubuntu this is:
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-Then you can compile...+Then you can compile.
   make clean   make clean
   make deb-pkg   make deb-pkg
wiki/system_configuration.txt · Last modified: 2024/01/13 15:00 by autostatic