renice(1) - phpMan

RENICE(1) User Commands RENICE(1)

NAME
renice - alter priority of running processes

SYNOPSIS
renice [-n] priority [-gpu] identifier...

DESCRIPTION
renice alters the scheduling priority of one or more running processes. The first argu-
ment is the priority value to be used. The other arguments are interpreted as process IDs
(by default), process group IDs, user IDs, or user names. renice'ing a process group
causes all processes in the process group to have their scheduling priority altered.
renice'ing a user causes all processes owned by the user to have their scheduling priority
altered.

OPTIONS
-n, --priority priority
Specify the scheduling priority to be used for the process, process group, or user.
Use of the option -n or --priority is optional, but when used it must be the first
argument.

-g, --pgrp pgid...
Force the succeeding arguments to be interpreted as process group IDs.

-u, --user name_or_uid...
Force the succeeding arguments to be interpreted as usernames or UIDs.

-p, --pid pid...
Force the succeeding arguments to be interpreted as process IDs (the default).

-h, --help
Display a help text.

-V, --version
Display version information.

EXAMPLES
The following command would change the priority of the processes with PIDs 987 and 32,
plus all processes owned by the users daemon and root:

renice +1 987 -u daemon root -p 32

NOTES
Users other than the super-user may only alter the priority of processes they own, and can
only monotonically increase their ``nice value'' (for security reasons) within the range 0
to PRIO_MAX (20), unless a nice resource limit is set (Linux 2.6.12 and higher). The
super-user may alter the priority of any process and set the priority to any value in the
range PRIO_MIN (-20) to PRIO_MAX. Useful priorities are: 20 (the affected processes will
run only when nothing else in the system wants to), 0 (the ``base'' scheduling priority),
anything negative (to make things go very fast).

FILES
/etc/passwd
to map user names to user IDs