Permanent priorities

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1

I was wondering if there was a way of assigning a process a permanent priority level.

2

Sure, add Nice=<priority> to the service file.

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3

How do I add it to the service file?

4

That depends on whether it’s a system service or a user application:

  • If it’s a system service unit then in an override file in /etc/systemd/system/foo.service.d/override.conf. Make sure to add [Service] before Nice=<priority>.
  • If it’s a user application, then you need to find the name of the unit under which the application is run first using systemd-cgls for example, and then you can write a similar file in ~/.config/systemd/user/foo.service.d/override.conf

Note that Nice levels are now almost meaningless with cgroups and you should use other resource control options: systemd.resource-control

See:

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