Nice

The lower the level The higher the priority
The higher the level The lower the priority

Default is: 0
Range: -20 to 19

nice value is a user-space and priority
PR is the process's actual priority that use by Linux kernel.

In linux system priorities are 0 to 139
In which 0 to 99 for real time and 100 to 139 for users. Relation between nice value and priority is : PR = 20 + NI

nice -n 10 bash

ps -o pid,comm,nice

  PID COMMAND          NI
  993 bash              0
 1846 ps                0

renice 10 993

993 (process ID) old priority 10, new priority 10

renice -n 10 -p 993

993 (process ID) old priority 10, new priority 10

ps -o pid,comm,nice

  PID COMMAND          NI
  993 bash             10
 2441 ps               10

renice -n 10 `pidof chromium-browser`

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Lecture notes

• All lecture notes are available at github in ipynb format: https://github.com/ravexina/linux-notes.

• There are html exports of project available at: https://ravexina.github.io/linux-notes.

License

Linux Notes by Milad As (Ravexina) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

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