RENICE(8-BSD)       RISC/os Reference Manual        RENICE(8-BSD)



NAME
     renice - alter priority of running processes

SYNOPSIS
     /etc/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 pro-
     cess 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 parame-
     ters 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 exam-
     ple,

          /etc/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)

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.







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