How should I setup Tuned-adm?

Question

So the simple answer could be just install tuned apt install tuned

I wonder if the ondemand service would collide with tuned-adm so being it disabling the service before installing tuned.

This is what I think I should do

systemctl stop ondemand
systemctl disable ondemand
apt install tuned

I want to confirm this because I have no documentation saying I should do this.

Answer 1

The two processes don't really conflict with each other. ondemand.service focuses on setting the CPU Frequency Scaling governor.:

$ systemctl status ondemand
● ondemand.service - LSB: Set the CPU Frequency Scaling governor to "ondemand"
   Loaded: loaded (/etc/init.d/ondemand; bad; vendor preset: enabled)
   Active: active (exited) since Thu 2019-10-31 05:30:09 MDT; 1 weeks 3 days ago
     Docs: man:systemd-sysv-generator(8)

Oct 31 05:30:08 alien systemd[1]: Starting LSB: Set the CPU Frequency Scaling governor to "o
Oct 31 05:30:09 alien systemd[1]: Started LSB: Set the CPU Frequency Scaling governor to "on

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Tuned on the other hand focuses on optimizing performance of storage devices (including swap):

The Tuned Project

Tuned is a system tuning service for Linux. It:

• monitors connected devices using the udev device manager
• tunes system settings according to a selected profile
• supports various types of configuration like sysctl, sysfs, or kernel boot command line parameters, which are integrated in a plug-in architecture
• supports hot plugging of devices and can be controlled from the command line or through D-Bus, so it can be easily integrated into existing administering solutions: for example, with Cockpit
• can be run in no-daemon mode with limited functionality (for example, no support for D-Bus, udev, tuning of newly created processes, and so on) for systems with reduced resources
• stores all its configuration cleanly in one place – in the Tuned profile – instead of having configuration on multiple places and in custom scripts

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There should be no problem keeping ondemand service running or disabling it before installing tuned.