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

NAME

       renice - alter priority of running processes

SYNOPSIS

       renice priority [ [ -p ] pid ... ] [ [ -g ] pgrp ... ] [ [ -u ] user ... ]

DESCRIPTION

       Renice  alters the scheduling priority of one or more running processes.  The who parameters are interpreted as process ID's, process group
       ID's, 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.  By default, the processes to be
       affected are specified by their process ID's.  To force who parameters to be interpreted as process group ID's, a -g may be specified.	To
       force  the  who	parameters  to	be  interpreted  as  user names, a -u may be given.  Supplying -p will reset who interpretation to be (the
       default) process ID's.  For example,

	    renice +1 987 -u daemon root -p 32

       would change the priority of process ID's 987 and 32, and all processes owned by users daemon and root.

       Users other than the super-user may only alter the priority of processes they own, and can only monotonically increase their ``nice value''
       within  the  range  0  to  PRIO_MAX  (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 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 ID's

SEE ALSO

       getpriority(2), setpriority(2)

BUGS

       Non  super-users can not increase scheduling priorities of their own processes, even if they were the ones that decreased the priorities in
       the first place.

4th Berkeley Distribution					 November 17, 1996							 RENICE(8)