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See https://wiki.linuxfoundation.org/realtime/documentation/howto/appl= ications/preemptrt_setup and https://stackoverflow.com/questions/51669724/install-rt-linu= x-patch-for-ubuntu (or alternatively = https://medium.com/@patdhlk/realtime-linux-e97628b51d5d).
If the latter is not available (taken from the stackoverflow guide): Aft=
er applying the patch, you must install some packages (sudo apt-get i=
nstall libncurses-dev libssl-dev
) (others will be asked for by make =
/ error if they do not exist), then type make menuconfig
=
and select the Fully Preemptible Kernel (RT) (Processor ty=
pe and features -> Preemption Model -> Fully Preemptible Kernel (RT)<=
/em>, could be located under general settings depending on the kernel versi=
on). After that, install the Kernel and apply it:
make -j20
sudo make modules_install -j20
sudo make install -j20
cd /boot ls sudo update-grub
"To change default kernel in grub, e=
dit the GRUB_DEFAULT value in /etc/default/grub to your desired kernel." Th=
en reboot, uname -a
should now indicate that the new kernel is=
used.
Make sure to install a kernel that fits the current kernel used by your = distribution.
If ubuntu is unable to locate the libncurses-dev
package, t=
ry again the ubuntu full-scale installation.