rtprio(1)rtprio(1)NAMErtprio - execute process with real-time priority
SYNOPSIS
priority command [arguments]
priority
command [arguments]
DESCRIPTION
executes command with a real-time priority, or changes the real-time
priority of currently executing process pid. Real-time priorities
range from zero (highest) to 127 (lowest). Real-time processes are not
subject to priority degradation, and are all of greater (scheduling)
importance than non-real-time processes. See rtprio(2) for more
details.
If is specified instead of a real-time priority, executes command with
a timeshare (non-real-time) priority, or changes the currently execut‐
ing process pid from a possibly real-time priority to a timeshare pri‐
ority. The former is useful to spawn a timeshare priority command from
a real-time priority shell.
If is not specified, command is not scheduled, or pid's real-time pri‐
ority is not changed, if the user is not a member of a group having
access and is not the user with appropriate privileges. When changing
the real-time priority of a currently executing process, the effective
user ID of the calling process must be the user with appropriate privi‐
leges, or the real or effective user ID must match the real or saved
user ID of the process to be modified.
RETURN VALUE
returns exit status 0 if command is successfully scheduled or if pid's
real-time priority is successfully changed, 1 if command is not exe‐
cutable or pid does not exist, and 2 if command (pid) lacks real-time
capability, or the invoker's effective user ID is not a user who has
appropriate privileges, or the real or effective user or the real or
effective user ID does not match the real or saved user ID of the
process being changed.
EXAMPLES
Execute file at a real-time priority of 100:
Set the currently running process pid 24217 to a real-time priority of
40:
AUTHOR
was developed by HP.
SEE ALSOsetprivgrp(1M), getprivgrp(2), rtprio(2).
rtprio(1)
