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I've noticed that all services and processes with my user in Ubuntu Server 22.04.4 LTS have a nice value of 19. I connect to the server through ssh, and my ssh sessions also have a nice value of 19. I didn't use the nice or renice commands.

I'm searching for the configuration that produces this default nice value. So far, I've seen that /etc/security/limits.conf is the place to configure default nice value, but my current file is all commented out. Also I cannot find any reference to this nice value in the generic systemd [email protected] or user.slice unit files.

In desktop Ubuntu, the default nice value is 0, so I assume it must be configurable.

Could you point me to the configuration file where this nice value of 19 is configured?

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Reset to default
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This is not enabled by default in any of known official Ubuntu releases.

You could inspect the output of sudo grep -E -i -w -r '19|20|nice' /etc.

20 is necessary because it's how renice/nice often used.

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