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RENICE(8)                   System Manager's Manual                  RENICE(8)



NAME
       renice - alter nice value of running processes

SYNOPSIS
       /usr/etc/renice priority pid...

       /usr/etc/renice  priority  [  -p  pid...   ] [ -g pgrp...  ] [ -u user-
       name...  ]

DESCRIPTION
       renice alters the scheduling nice value, and hence the priority, of one
       or  more running processes.  See nice(1) for a discussion of nice value
       and process scheduling priority.

OPTIONS
       By default, the processes to be affected are specified by their process
       IDs.  priority is the new priority value.

       -p pid ...     Specify a list of process IDs.

       -g pgrp ...    Specify  a  list of process group IDs.  The processes in
                      the specified process groups have their scheduling  pri-
                      ority altered.

       -u user ...    Specify  a list of user IDs or usernames.  All processes
                      owned by each user have their scheduling altered.

       Users other than the super-user may only alter  the  priority  of  pro-
       cesses they own, and can only monotonically increase their "nice value"
       within the range 0 to 20.   (This  prevents  overriding  administrative
       fiats.)   The  super-user may alter the priority of any process and set
       the priority to any value in the range  -20 to 19.  Useful nice  values
       are  19  (the affected processes will run only when nothing else in the
       system wants to), 0 (the default nice value) and any negative value (to
       make things go faster).

       If  only the priority is specified, the current process (alternatively,
       process group or user) is used.

FILES
       /etc/passwd         to map user names to user ID's

SEE ALSO
       pstat(8)

BUGS
       If you make the nice value very negative, then the  process  cannot  be
       interrupted.

       To regain control you must make the priority greater than zero.

       Users  other  than the super-user cannot increase scheduling priorities
       of their own processes, even if they were the ones that  decreased  the
       priorities in the first place.



                               9 September 1987                      RENICE(8)