renice

Additional Notes

renice is a process-management command used to change the priority of running processes. It adjusts the scheduling priority (nice value) of already-running processes.

Users can only increase the nice value (lower priority) of their own processes; root can set any value. The range is typically -20 (highest priority) to 19 (lowest).

Syntax

renice priority [options] target

Parameters

• options: Flags that change how renice behaves.
• pid: Process ID whose niceness should change.
• priority: New nice value to apply.

Common Options

• -p PID: Change by process ID.
• -u USER: Change processes owned by a user.
• -g GROUP: Change processes by group.

Examples

renice 10 -p 1234
sudo renice -5 -p 1234
renice 5 -u deploy

Practical Notes

Use ps or top to find the process before changing its scheduling priority.