Installing the Low Latency Kernel in Ubuntu
Updated 3 weeks ago
by
Bryan Jones
Scope
This document provides a scripted installation of the low-latency kernel on Ubuntu Linux.
Prerequisites
- Ubuntu Server 20.04 or 22.04 on metal or in AWS
- Internet access, Internet Gateway, or NAT Gateway to allow the script to download the low latency kernel from the Canonical repositories
Installation
Online Install
- Copy/paste the command below into the Linux CLI to download and run the script:
curl -sSf https://telos-public.s3.amazonaws.com/devops/install-low-latency-kernel.sh | bash
- Reboot the host:
sudo reboot
The host will boot and persist into the most current Ubuntu low-latency kernel.
Offline Install
Please note that the Offline install must still download and install the low-latency kernel via the apt package manager. The script assumes access to the Canonical repositories.
- Download the script locally and copy it to the target system:
https://telos-public.s3.amazonaws.com/devops/install-low-latency-kernel.sh
- From the Linux CLI on the target system, run the command below to make the script executable:
sudo chmod +x install-low-latency-kernel.sh
- Run the script to install the low-latency kernel:
sudo sh ./install-low-latency-kernel.sh
- Reboot the host:
sudo reboot
The host will boot and persist into the most current Ubuntu low-latency kernel.
Troubleshooting
To verify which kernel your Ubuntu system is booted into, run the command below:
uname -r
Example Output:
ubuntu@APP-123456789:~$ uname -r
5.4.0-162-lowlatency
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