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NetBSD 6.1.5 - man page for renice (netbsd section 8)

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

     renice -- alter priority of running processes

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

     renice alters the scheduling priority of one or more running processes.  The following 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

     Options supported by renice:

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

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

     -u      Force the who parameters to be interpreted as user names.

     -p      Resets 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 dae-
     mon 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: 0, the ``base'' scheduling priority; 20, the affected processes will
     run only when nothing at the base priority wants to; anything negative, the processes will
     receive a scheduling preference.

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

     nice(1), getpriority(2), setpriority(2)

     The renice command appeared in 4.0BSD.

     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.

BSD					   June 9, 1993 				      BSD
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