renice(1) — Linux manual page


RENICE(1)                       User Commands                      RENICE(1)

NAME         top

       renice - alter priority of running processes

SYNOPSIS         top

       renice [-n] priority [-g|-p|-u] identifier...

DESCRIPTION         top

       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.

OPTIONS         top

       -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

       -u, --user
              Interpret the succeeding arguments as usernames or UIDs.

       -V, --version
              Display version information and exit.

       -h, --help
              Display help text and exit.

FILES         top

              to map user names to user IDs

NOTES         top

       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(1p) 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).

HISTORY         top

       The renice command appeared in 4.0BSD.

EXAMPLES         top

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

              renice +1 987 -u daemon root -p 32

SEE ALSO         top

       nice(1), chrt(1), getpriority(2), setpriority(2), credentials(7),

AVAILABILITY         top

       The renice command is part of the util-linux package and is available
       from Linux Kernel Archive 

COLOPHON         top

       This page is part of the util-linux (a random collection of Linux
       utilities) project.  Information about the project can be found at 
       ⟨⟩.  If you have a
       bug report for this manual page, send it to  This page was obtained from the
       project's upstream Git repository
       ⟨git://⟩ on
       2020-09-18.  (At that time, the date of the most recent commit that
       was found in the repository was 2020-09-15.)  If you discover any
       rendering problems in this HTML version of the page, or you believe
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       (which is not part of the original manual page), send a mail to

util-linux                        July 2014                        RENICE(1)

Pages that refer to this page: chrt(1)kill(1@@procps-ng)nice(1)skill(1)snice(1)taskset(1)getpriority(2)nice(2)setpriority(2)