renice
QNX SDP8.0Utilities ReferenceUtilities
Adjust the priorities of running processes (POSIX)
Syntax:
renice prioritylevel [-g pgrp...]
[-p pid...] [-u user...]
Runs on:
QNX OS
Options:
- -g pgrp
- Renice processes in this process group.
- -p pid
- Renice this process.
- -u user
- Renice processes owned by this user.
- prioritylevel
- The amount to adjust the priority by. Positive numbers lower the priority by that many full priority levels, while negative numbers raise the priority.
Description:
The renice utility adjusts the priority of all the threads in one or more running processes. The specified prioritylevel is subtracted from the current priority of each selected process.
| If you enter a: | renice: |
|---|---|
| Positive value (e.g., 2 or +2) | Lowers the priority of a process, making it nicerto other processes |
| Negative value (e.g., -2) | Raises the priority of a process, making it meanerto other processes |
You can adjust the priority as follows:
| If you're: | You can change to any priority: |
|---|---|
| A non-root user | From 1 to 63 |
| root | From 1 to 255 |
If you don't have the appropriate privileges, you can renice only the processes you own. You can change the range of privileged priorities with the -P option for procnto.
Examples:
Lower the priority of process 768 by 2:
renice 2 -p 768
Exit status:
- 0
- Successful completion.
- > 0
- An error occurred.
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