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| Both sides previous revisionPrevious revision | Next revisionBoth sides next revision |
| wiki:system_configuration [2020/06/08 11:33] – [How do I build a real-time audio workstation on Linux?] grammo | wiki:system_configuration [2020/06/08 11:36] – [The kernel] grammo |
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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: |
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| $ 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` |
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| 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. |
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| Open ''/etc/default/grub'' with your favorite editor as root. | Open ''/etc/default/grub'' with your favorite editor as root. |
