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

NAME
     renice -- alter priority of running processes

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

DESCRIPTION
     The renice	utility	alters the scheduling priority of one or more running
     processes.	 The following who parameters are interpreted as process ID's,
     process group ID's, user ID's or user names.  The renice'ing of a process
     group causes all processes	in the process group to	have their scheduling
     priority altered.	The renice'ing of a user causes	all processes owned by
     the user to have their scheduling priority	altered.  By default, the pro-
     cesses to be affected are specified by their process ID's.

     The following options are available:

     -g	     Force who parameters to be	interpreted as process group ID's.

     -n	     Instead of	changing the specified processes to the	given prior-
	     ity, interpret the	following argument as an increment to be
	     applied to	the current priority of	each process.

     -u	     Force the who parameters to be interpreted	as user	names or user
	     ID's.

     -p	     Reset the 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), any-
     thing negative (to	make things go very fast).

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

SEE ALSO
     nice(1), rtprio(1), getpriority(2), setpriority(2)

STANDARDS
     The renice	utility	conforms to IEEE Std 1003.1-2001 (``POSIX.1'').

HISTORY
     The renice	utility	appeared in 4.0BSD.

BUGS
     Non super-users cannot increase scheduling	priorities of their own	pro-
     cesses, even if they were the ones	that decreased the priorities in the
     first place.

FreeBSD	10.1			 June 9, 1993			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | FILES | SEE ALSO | STANDARDS | HISTORY | BUGS

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