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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | NOTES | FILES | SEE ALSO | HISTORY | AVAILABILITY | COLOPHON |
RENICE(1) User Commands RENICE(1)
renice - alter priority of running processes
renice [-n] priority [-g|-p|-u] identifier...
renice alters the scheduling priority of one or more running
processes. The first argument 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.
-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
Interpret the succeeding arguments as process group IDs.
-p, --pid
Interpret the succeeding arguments as process IDs (the
default).
-u, --user
Interpret the succeeding arguments as usernames or UIDs.
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.
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
Users other than the superuser may only alter the priority of
processes they own. Furthermore, an unprivileged user can only
increase the ``nice value'' (i.e., choose a lower priority) and such
changes are irreversible unless (since Linux 2.6.12) the user has a
suitable ``nice'' resource limit (see ulimit(1) and getrlimit(2)).
The superuser may alter the priority of any process and set the
priority to any value in the range -20 to 19. Useful priorities are:
19 (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).
/etc/passwd
to map user names to user IDs
nice(1), getpriority(2), setpriority(2), credentials(7), sched(7)
The renice command appeared in 4.0BSD.
The renice command is part of the util-linux package and is available
from Linux Kernel Archive
⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩.
This page is part of the util-linux (a random collection of Linux
utilities) project. Information about the project can be found at
⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have a
bug report for this manual page, send it to
util-linux@vger.kernel.org. This page was obtained from the
project's upstream Git repository
⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on
2017-07-05. If you discover any rendering problems in this HTML ver‐
sion of the page, or you believe there is a better or more up-to-date
source for the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original man‐
ual page), send a mail to man-pages@man7.org
util-linux July 2014 RENICE(1)
Pages that refer to this page: chrt(1), kill(1@@procps-ng), skill(1), taskset(1), getpriority(2), nice(2)