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RENICE(8) System Manager's Manual RENICE(8) NAME renice -- alter priority of running processes SYNOPSIS renice priority [[-gpu] target] renice -n increment [[-gpu] target] DESCRIPTION The renice utility alters the scheduling priority of one or more run- ning processes. The following target parameters are interpreted as process ID's (the default), 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. The following options are available: -n Instead of changing the specified processes to the given prior- ity, interpret the following argument as an increment to be ap- plied to the current priority of each process. -g Interpret target parameters as process group ID's. -p Interpret target parameters as process ID's (the default). -u Interpret target parameters as user names or user ID's. 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 EXAMPLES Change the priority of process ID's 987 and 32, and all processes owned by users daemon and root. renice +1 987 -u daemon root -p 32 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 processes, even if they were the ones that decreased the priorities in the first place. FreeBSD 14.3 October 27, 2020 RENICE(8)
NAME | SYNOPSIS | DESCRIPTION | FILES | EXAMPLES | SEE ALSO | STANDARDS | HISTORY | BUGS
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