RT kernel patching for Ubuntu server releases

To apply the Real-Time (RT) patch to an Ubuntu kernel, you can follow these general steps:

Download the RT patch: Visit the Real-Time Preempt patch website (https://mirrors.edge.kernel.org/pub/linux/kernel/projects/rt/) and download the RT patch that matches your kernel version. Make sure to download the patch file corresponding to your kernel version (e.g., patch-5.x.x-rt-x.patch).

Install necessary packages: Before applying the RT patch, you need to ensure that your system has the necessary packages for building the kernel. Run the following command to install the required packages:

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sudo apt-get install build-essential libncurses-dev bison flex libssl-dev libelf-dev
Extract the kernel source: Download the kernel source code corresponding to your running kernel version. You can obtain the source code from the Ubuntu kernel repository or by using the apt-get source command. Once you have the source code, extract it to a directory of your choice.

Apply the RT patch: Move the downloaded RT patch file to the kernel source directory. Change your working directory to the kernel source directory and apply the patch using the following command:

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patch -p1 < patch-5.x.x-rt-x.patch
Replace patch-5.x.x-rt-x.patch with the name of the RT patch file you downloaded.

Configure the kernel: Run the following command to configure the kernel:

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sudo make menuconfig
This command will open a configuration menu where you can customize various kernel settings. Make sure to enable the Real-Time Preemption option. You can navigate through the menu using the arrow keys, modify the configuration using the spacebar, and save the configuration before exiting.

Build and install the kernel: Once you have configured the kernel, build it using the following command:

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sudo make -j$(nproc)
This command will compile the kernel using multiple threads to speed up the process. The -j$(nproc) option specifies the number of threads to use, which is determined by the nproc command.

Install the kernel: After the kernel has been built successfully, install it using the following command:

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sudo make modules_install install
This command will install the kernel modules and update the boot configuration to use the new kernel.

Reboot: Once the installation is complete, reboot your system to load the newly installed RT-patched kernel.

Please note that applying the RT patch and building a custom kernel requires some technical knowledge, and there is a potential risk of system instability if not done correctly. It's advisable to perform these steps on a test system or backup your important data before proceeding.

Also, please keep in mind that the specific steps and commands may vary depending on your Ubuntu version and kernel configuration. Make sure to refer to the documentation provided with the RT patch and adapt the steps accordingly.
https://instaprodownload.net/
Lastly, ensure that your hardware and network drivers are compatible with the Real-Time features you require for your time-sensitive applications.

https://ubuntu.com/blog/real-time-ubuntu-released
Real-time Ubuntu 22.04 LTS Beta – Now Available